:Product: 3-Day Forecast
:Issued: 2026 Aug 16 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Aug 16-Aug 18 2026 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Aug 16-Aug 18 2026

Aug 16 Aug 17 Aug 18
00-03UT 1.33 2.00 2.67
03-06UT 1.33 3.00 4.00
06-09UT 1.67 2.67 3.00
09-12UT 1.33 4.00 2.67
12-15UT 1.33 3.00 2.67
15-18UT 1.33 3.00 2.00
18-21UT 1.67 2.67 1.00
21-00UT 1.67 3.00 2.00

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Aug 16-Aug 18 2026

Aug 16 Aug 17 Aug 18
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Aug 16-Aug 18 2026

Aug 16 Aug 17 Aug 18
R1-R2 15% 15% 15%
R3 or greater 1% 1% 1%

Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts on 16-18 Aug.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Aug 19 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for Aug 19-Aug 21 2026 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Aug 19-Aug 21 2026

Aug 19 Aug 20 Aug 21
00-03UT 4.33 4.00 4.00
03-06UT 4.67 (G1) 3.33 2.00
06-09UT 4.00 3.33 1.67
09-12UT 4.67 (G1) 3.00 2.33
12-15UT 4.00 2.33 2.33
15-18UT 3.67 2.00 2.67
18-21UT 3.33 2.33 2.67
21-00UT 3.67 3.00 3.00

Rationale: G1 (Minor) geomagnetic storms are likely on 19 Aug due to the influences of a CME and/or CIR.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Aug 19-Aug 21 2026

Aug 19 Aug 20 Aug 21
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Aug 19-Aug 21 2026

Aug 19 Aug 20 Aug 21
R1-R2 35% 35% 35%
R3 or greater 5% 5% 5%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
with a slight chance for R3 (Strong) events through 21 Aug.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Aug 22 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Aug 22-Aug 24 2026 is 3.33 (below NOAA
Scale levels).

NOAA Kp index breakdown Aug 22-Aug 24 2026

Aug 22 Aug 23 Aug 24
00-03UT 3.00 3.00 1.67
03-06UT 3.33 2.00 1.33
06-09UT 2.33 2.00 1.33
09-12UT 2.33 2.00 1.33
12-15UT 2.00 2.00 1.33
15-18UT 1.00 2.00 1.33
18-21UT 2.00 2.00 1.67
21-00UT 2.00 2.33 1.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Aug 22-Aug 24 2026

Aug 22 Aug 23 Aug 24
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Aug 21 2026 1018 UTC.

Radio Blackout Forecast for Aug 22-Aug 24 2026

Aug 22 Aug 23 Aug 24
R1-R2 40% 40% 40%
R3 or greater 10% 10% 10%

Rationale: There is a chance for isolated R1-R2 (Minor-Moderate) radio blackouts, and a slight chance for R3 (Strong) events on 22-24 Aug,
mostly due to the flare potential of Region 4513.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Aug 25 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Aug 25-Aug 27 2026 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Aug 25-Aug 27 2026

Aug 25 Aug 26 Aug 27
00-03UT 2.67 1.67 1.67
03-06UT 1.67 1.67 1.33
06-09UT 1.67 1.67 1.33
09-12UT 1.67 1.33 1.67
12-15UT 1.67 0.67 2.33
15-18UT 0.67 1.33 2.67
18-21UT 0.67 1.67 4.00
21-00UT 1.33 1.67 4.00

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Aug 25-Aug 27 2026

Aug 25 Aug 26 Aug 27
S1 or greater 30% 10% 10%

Rationale: There is a chance for the greater than 10 MeV proton flux to
reach S1 (Minor) levels on 25 Aug, with a slight chance for S1 levels on
26-27 Aug.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Aug 24 2026 1936 UTC.

Radio Blackout Forecast for Aug 25-Aug 27 2026

Aug 25 Aug 26 Aug 27
R1-R2 45% 45% 45%
R3 or greater 10% 10% 10%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
and a slight chance for an R3 (Strong) or greater event, over 25-27 Aug.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Aug 28 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 1 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Aug 28-Aug 30 2026 is 5.67 (NOAA Scale
G2).

NOAA Kp index breakdown Aug 28-Aug 30 2026

Aug 28 Aug 29 Aug 30
00-03UT 2.33 5.67 (G2) 3.67
03-06UT 2.67 4.67 (G1) 3.33
06-09UT 4.00 4.00 3.00
09-12UT 4.00 3.00 3.00
12-15UT 4.67 (G1) 2.33 3.00
15-18UT 5.00 (G1) 2.67 2.00
18-21UT 4.67 (G1) 2.67 3.33
21-00UT 5.67 (G2) 3.00 3.33

Rationale: G1 (Minor) storm levels are likely due to the onset of
positive polarity CH HSS effects. Later on 28 Aug, G2 (Moderate) storm
levels are likely due to additional disturbances caused by the
anticipated arrival of the CMEs that left the Sun on 25-26 Aug. G1 to G2
storm levels are likely to persist through 29 Aug before waning
conditions are expected on 30 Aug.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Aug 28-Aug 30 2026

Aug 28 Aug 29 Aug 30
S1 or greater 10% 10% 10%

Rationale: here is a slight chance for the greater than 10 MeV proton
flux to reach S1 (Minor) storm levels through 30 Aug, mostly due to the potential for activity from Region 4513.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Aug 28-Aug 30 2026

Aug 28 Aug 29 Aug 30
R1-R2 45% 45% 45%
R3 or greater 10% 10% 10%

Rationale: There is a chance for isolated R1/R2 (Minor-Moderate) radio blackouts, with a slight chance for an isolated R3 (Strong) event
through 30 Aug primarily due to the current potential and flare history
of Region 4513.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Aug 31 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Aug 31-Sep 02 2026 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Aug 31-Sep 02 2026

Aug 31 Sep 01 Sep 02
00-03UT 4.00 1.67 1.67
03-06UT 3.33 1.33 1.67
06-09UT 3.00 1.67 1.33
09-12UT 2.00 1.33 1.33
12-15UT 2.00 1.33 1.33
15-18UT 1.00 1.33 1.33
18-21UT 2.00 1.33 1.33
21-00UT 2.00 1.67 1.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Aug 31-Sep 02 2026

Aug 31 Sep 01 Sep 02
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Aug 31-Sep 02 2026

Aug 31 Sep 01 Sep 02
R1-R2 15% 10% 10%
R3 or greater 1% 1% 1%

Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts over 31 Aug - 02 Sep.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 03 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 03-Sep 05 2026 is 1.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Sep 03-Sep 05 2026

Sep 03 Sep 04 Sep 05
00-03UT 1.67 1.33 1.67
03-06UT 1.67 1.67 1.33
06-09UT 1.33 1.67 1.33
09-12UT 0.33 1.33 1.33
12-15UT 0.67 1.00 1.33
15-18UT 1.33 1.33 1.33
18-21UT 1.33 1.67 1.67
21-00UT 1.33 1.33 1.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 03-Sep 05 2026

Sep 03 Sep 04 Sep 05
S1 or greater 5% 5% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Sep 02 2026 1920 UTC.

Radio Blackout Forecast for Sep 03-Sep 05 2026

Sep 03 Sep 04 Sep 05
R1-R2 15% 15% 15%
R3 or greater 1% 1% 1%

Rationale: Solar activity will likely reach low levels with isolated to occasional C-class flare activity, with a slight chance for M-class
flares (R1-R2/Minor-Moderate), through 05 Sep.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 06 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 06-Sep 08 2026 is 3.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Sep 06-Sep 08 2026

Sep 06 Sep 07 Sep 08
00-03UT 1.67 3.33 3.33
03-06UT 1.67 2.00 4.00
06-09UT 1.33 2.00 3.67
09-12UT 1.33 3.00 3.33
12-15UT 1.33 3.67 3.00
15-18UT 1.33 3.33 3.00
18-21UT 1.33 3.33 2.67
21-00UT 1.67 3.00 3.00

Rationale: While a CIR ahead of a positive polarity coronal high speed
stream and CME influences are anticipated to arrive on 07-08 Sep, no G1
(Minor) or greater geomagnetic storms are expected.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
above S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 06-Sep 08 2026

Sep 06 Sep 07 Sep 08
S1 or greater 75% 10% 10%

Rationale: S1 (Minor) solar radiation storms are expected on 06 Sep due
to elevated levels from eruptive activity on 05 Sep, decreasing to a
slight chance on 07-08 Sep, due to the source region remaining in a geo-effective location.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Sep 05 2026 1518 UTC.

Radio Blackout Forecast for Sep 06-Sep 08 2026

Sep 06 Sep 07 Sep 08
R1-R2 20% 20% 20%
R3 or greater 1% 1% 1%

Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts through 08 Sep.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 09 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for Sep 09-Sep 11 2026 is 5.67 (NOAA Scale
G2).

NOAA Kp index breakdown Sep 09-Sep 11 2026

Sep 09 Sep 10 Sep 11
00-03UT 5.00 (G1) 3.00 2.00
03-06UT 5.67 (G2) 2.67 2.33
06-09UT 4.00 2.67 2.00
09-12UT 3.33 2.33 2.00
12-15UT 2.67 1.33 2.33
15-18UT 3.00 2.00 2.67
18-21UT 3.00 2.00 2.67
21-00UT 3.33 2.33 3.00

Rationale: G1-G2 (Minor-Moderate) geomagnetic storms are likely on 09
Sep due to the combination of positive polarity coronal hole high speed
stream effects and the anticipated arrival of CMEs that left the Sun
05-06 Sep.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 09-Sep 11 2026

Sep 09 Sep 10 Sep 11
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Sep 09-Sep 11 2026

Sep 09 Sep 10 Sep 11
R1-R2 10% 10% 10%
R3 or greater 1% 1% 1%

Rationale: Solar activity is likely to be at low levels with
occasional C-class flare activity and a slight chance for M-class
flares (R1-R2/Minor-Moderate) through 11 Sep.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 12 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 12-Sep 14 2026 is 3.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Sep 12-Sep 14 2026

Sep 12 Sep 13 Sep 14
00-03UT 2.33 2.33 3.33
03-06UT 2.67 2.00 3.67
06-09UT 2.67 2.33 3.00
09-12UT 2.33 2.33 3.00
12-15UT 1.33 2.33 3.00
15-18UT 1.00 2.33 3.00
18-21UT 2.00 2.67 3.67
21-00UT 2.33 3.33 3.33

Rationale: No G1 (Minor) or greater geomagnetic storms are expected
through 14 Sep, though a solar sector boundary crossing and CH HSS on
13-14 Sep are expected to create unsettled to active conditions.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 12-Sep 14 2026

Sep 12 Sep 13 Sep 14
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected
through 14 Sep.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Sep 12-Sep 14 2026

Sep 12 Sep 13 Sep 14
R1-R2 10% 10% 10%
R3 or greater 1% 1% 1%

Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts through 14 Sep.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 15 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 15-Sep 17 2026 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Sep 15-Sep 17 2026

Sep 15 Sep 16 Sep 17
00-03UT 3.33 3.67 3.67
03-06UT 4.67 (G1) 3.33 3.00
06-09UT 3.33 3.00 2.00
09-12UT 3.67 2.67 2.67
12-15UT 3.00 3.00 2.67
15-18UT 3.00 3.33 2.67
18-21UT 3.00 3.67 2.00
21-00UT 3.00 4.67 (G1) 2.67

Rationale: G1 (Minor) geomagnetic storms are likely on 15-16 Sep due to
the CH HSS effects combined with CMEs glancing blow.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 15-Sep 17 2026

Sep 15 Sep 16 Sep 17
S1 or greater 20% 20% 20%

Rationale: There is a slight chance for S1 (Minor) solar radiation
storms on 15-17 Sep period.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Sep 15-Sep 17 2026

Sep 15 Sep 16 Sep 17
R1-R2 10% 10% 10%
R3 or greater 1% 1% 1%

Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts on 15-17 Sep period.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 18 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 18-Sep 20 2026 is 3.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Sep 18-Sep 20 2026

Sep 18 Sep 19 Sep 20
00-03UT 3.67 2.67 2.33
03-06UT 2.00 2.00 2.00
06-09UT 2.00 2.33 2.00
09-12UT 2.67 2.33 2.00
12-15UT 2.67 2.33 2.00
15-18UT 2.67 2.33 2.00
18-21UT 2.67 2.33 2.00
21-00UT 3.00 2.67 2.33

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 18-Sep 20 2026

Sep 18 Sep 19 Sep 20
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Sep 18-Sep 20 2026

Sep 18 Sep 19 Sep 20
R1-R2 5% 5% 5%
R3 or greater 1% 1% 1%

Rationale: No R1 (Minor) or greater radio blackouts are expected. No significant active region flare activity is forecast.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 21 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 21-Sep 23 2026 is 2.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Sep 21-Sep 23 2026

Sep 21 Sep 22 Sep 23
00-03UT 1.67 1.67 1.67
03-06UT 2.00 2.00 2.00
06-09UT 1.67 1.67 1.67
09-12UT 1.33 1.33 1.33
12-15UT 0.67 0.67 0.67
15-18UT 1.33 0.67 0.67
18-21UT 1.33 1.67 1.67
21-00UT 1.67 1.67 1.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 21-Sep 23 2026

Sep 21 Sep 22 Sep 23
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Sep 21-Sep 23 2026

Sep 21 Sep 22 Sep 23
R1-R2 1% 1% 1%
R3 or greater 1% 1% 1%

Rationale: No R1 (Minor) or greater radio blackouts are expected. No significant active region flare activity is forecast.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 24 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 24-Sep 26 2026 is 5.00 (NOAA Scale
G1).

NOAA Kp index breakdown Sep 24-Sep 26 2026

Sep 24 Sep 25 Sep 26
00-03UT 4.33 3.67 3.00
03-06UT 5.00 (G1) 3.67 3.67
06-09UT 4.67 (G1) 3.00 2.67
09-12UT 3.33 2.67 2.00
12-15UT 2.33 2.33 1.67
15-18UT 2.33 3.00 2.33
18-21UT 3.00 3.33 2.33
21-00UT 3.33 3.00 2.67

Rationale: G1 (Minor) geomagnetic storm conditions are likely on 24 Sep
due to CH HSS effects.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 24-Sep 26 2026

Sep 24 Sep 25 Sep 26
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Sep 24-Sep 26 2026

Sep 24 Sep 25 Sep 26
R1-R2 20% 20% 20%
R3 or greater 1% 1% 1%

Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts through 26 Sep.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 27 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 27-Sep 29 2026 is 3.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Sep 27-Sep 29 2026

Sep 27 Sep 28 Sep 29
00-03UT 2.67 1.67 1.67
03-06UT 3.00 2.00 1.33
06-09UT 2.67 1.67 1.33
09-12UT 2.67 1.67 1.00
12-15UT 2.00 1.67 1.00
15-18UT 1.67 0.67 1.33
18-21UT 1.67 0.67 1.67
21-00UT 2.00 1.67 1.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 27-Sep 29 2026

Sep 27 Sep 28 Sep 29
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Sep 27-Sep 29 2026

Sep 27 Sep 28 Sep 29
R1-R2 10% 10% 5%
R3 or greater 1% 1% 1%

Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts through 29 Sep.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Sep 30 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Sep 30-Oct 02 2026 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Sep 30-Oct 02 2026

Sep 30 Oct 01 Oct 02
00-03UT 1.67 1.67 2.33
03-06UT 1.67 1.33 2.67
06-09UT 1.67 1.33 2.67
09-12UT 1.33 1.33 3.33
12-15UT 1.33 1.33 3.67
15-18UT 1.00 1.33 4.67 (G1)
18-21UT 1.00 1.67 4.00
21-00UT 1.67 1.67 3.33

Rationale: G1 (Minor) geomagnetic storming is likely on 02 Oct due to
glancing effects from a CME that left the Sun on 28 Sep.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-19 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Sep 30-Oct 02 2026

Sep 30 Oct 01 Oct 02
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Sep 30-Oct 02 2026

Sep 30 Oct 01 Oct 02
R1-R2 10% 10% 10%
R3 or greater 1% 1% 1%

Rationale: A slight chance for R1-R2 (Minor-Moderate) radio blackouts
due to isolated M-class flare activity will persist through 02 Oct.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Oct 04 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 04-Oct 06 2026 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Oct 04-Oct 06 2026

Oct 04 Oct 05 Oct 06
00-03UT 1.33 3.67 3.33
03-06UT 1.67 4.67 (G1) 3.67
06-09UT 1.67 4.33 3.33
09-12UT 2.33 3.67 3.00
12-15UT 3.00 2.67 2.33
15-18UT 3.33 3.00 2.67
18-21UT 3.33 2.33 2.67
21-00UT 3.67 2.33 2.67

Rationale: G1 (Minor) storm levels are likely on 05 Oct due to the
influence of a coronal hole high-speed stream.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Oct 04-Oct 06 2026

Oct 04 Oct 05 Oct 06
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Oct 04-Oct 06 2026

Oct 04 Oct 05 Oct 06
R1-R2 5% 5% 5%
R3 or greater 1% 1% 1%

Rationale: No R1 (Minor) or greater radio blackouts are expected. No significant active region flare activity is forecast.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Oct 07 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 07-Oct 09 2026 is 5.67 (NOAA Scale
G2).

NOAA Kp index breakdown Oct 07-Oct 09 2026

Oct 07 Oct 08 Oct 09
00-03UT 3.00 1.33 1.67
03-06UT 2.33 1.67 5.00 (G1)
06-09UT 2.33 1.33 4.33
09-12UT 2.00 1.67 5.67 (G2)
12-15UT 2.00 1.67 4.00
15-18UT 2.67 1.33 3.00
18-21UT 2.67 1.33 3.00
21-00UT 3.00 1.33 4.00

Rationale: G1-G2 (Minor-Moderate) geomagnetic storms are likely on 09
Oct due to the anticipated arrival of a CME from 07 Oct.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Oct 07-Oct 09 2026

Oct 07 Oct 08 Oct 09
S1 or greater 10% 10% 10%

Rationale: There is a slight chance for S1 (Minor) or greater solar
radiation storms all three days.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Oct 06 2026 0805 UTC.

Radio Blackout Forecast for Oct 07-Oct 09 2026

Oct 07 Oct 08 Oct 09
R1-R2 45% 45% 45%
R3 or greater 5% 5% 5%

Rationale: There is a chance for R1 (Minor) or greater radio blackouts
all three days mainly due to the flare potential of Region 4549.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Oct 10 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 10-Oct 12 2026 is 5.67 (NOAA Scale
G2).

NOAA Kp index breakdown Oct 10-Oct 12 2026

Oct 10 Oct 11 Oct 12
00-03UT 2.33 2.67 5.33 (G1)
03-06UT 2.67 2.67 5.67 (G2)
06-09UT 3.33 3.33 5.33 (G1)
09-12UT 3.33 3.33 4.33
12-15UT 3.33 3.67 3.67
15-18UT 3.67 4.00 3.67
18-21UT 4.00 4.67 (G1) 3.67
21-00UT 4.67 (G1) 4.67 (G1) 3.67

Rationale: G1 (Minor) geomagnetic storming conditions are expected late
on 10 Oct and on 11 Oct due to the anticipated arrivals of several
different CMEs with some potential negative polarity coronal hole high
speed stream influences. G1-G2 (Minor-Moderate) geomagnetic storm
conditions are expected early on 12 Oct due to the anticipated arrival
of additional CMEs with some potential negative polarity coronal hole
high speed stream influences.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Oct 10-Oct 12 2026

Oct 10 Oct 11 Oct 12
S1 or greater 10% 10% 10%

Rationale: There is a slight chance for S1 (Minor) or greater solar
radiation storms through 12 Oct, largely due to the flaring potential of
Region 4549.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Oct 09 2026 1409 UTC.

Radio Blackout Forecast for Oct 10-Oct 12 2026

Oct 10 Oct 11 Oct 12
R1-R2 55% 55% 55%
R3 or greater 10% 10% 10%

Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely, with a
slight chance for R3 (Strong) or greater events, through 12 Oct, largely
due to the flaring potential of Region 4549.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Oct 13 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 13-Oct 15 2026 is 5.00 (NOAA Scale
G1).

NOAA Kp index breakdown Oct 13-Oct 15 2026

Oct 13 Oct 14 Oct 15
00-03UT 4.00 3.67 2.67
03-06UT 4.67 (G1) 4.00 3.33
06-09UT 5.00 (G1) 2.67 3.00
09-12UT 4.33 3.67 2.33
12-15UT 4.00 3.67 1.67
15-18UT 3.67 3.67 1.00
18-21UT 3.33 3.33 1.33
21-00UT 2.67 2.67 2.33

Rationale: G1 (Minor) geomagnetic storm conditions are likely on 13 Oct
due to CH HSS onset.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Oct 13-Oct 15 2026

Oct 13 Oct 14 Oct 15
S1 or greater 5% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Oct 13-Oct 15 2026

Oct 13 Oct 14 Oct 15
R1-R2 45% 40% 35%
R3 or greater 10% 5% 5%

Rationale: Solar activity is still expected to be at low levels through
15 Oct, with diminishing chances for M-class flares (R1-R2,
Minor-Moderate) and little chance for X-flare activity as Region 4549
decays and exits the disk.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Oct 16 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 16-Oct 18 2026 is 2.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Oct 16-Oct 18 2026

Oct 16 Oct 17 Oct 18
00-03UT 2.33 1.67 1.67
03-06UT 2.67 1.67 1.67
06-09UT 2.00 1.33 1.33
09-12UT 1.67 1.33 1.33
12-15UT 1.67 1.33 1.33
15-18UT 2.00 1.33 1.33
18-21UT 2.00 1.33 1.33
21-00UT 2.67 1.67 1.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Oct 16-Oct 18 2026

Oct 16 Oct 17 Oct 18
S1 or greater 10% 10% 10%

Rationale: There is a slight chance for an S1 (Minor) solar radiation
storm through 18 Oct due to the flare potential of Region 4551.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Oct 16-Oct 18 2026

Oct 16 Oct 17 Oct 18
R1-R2 25% 25% 25%
R3 or greater 10% 10% 10%

Rationale: Solar activity is expected to be at low levels through 18
Oct, with a chance (25%) for M-class flares (R1-R2, Minor-Moderate) and
a slight chance for an X-class flare (R3-Strong) due mainly to the flare potential of Region 4551.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Oct 19 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 19-Oct 21 2026 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Oct 19-Oct 21 2026

Oct 19 Oct 20 Oct 21
00-03UT 2.33 4.33 3.33
03-06UT 2.00 4.67 (G1) 3.67
06-09UT 1.33 3.67 3.00
09-12UT 2.67 3.00 2.67
12-15UT 3.00 3.00 2.33
15-18UT 3.67 3.00 2.00
18-21UT 4.67 (G1) 3.33 3.33
21-00UT 4.33 3.67 3.00

Rationale: Periods of G1 (Minor) geomagnetic storming are likely on
19-20 Oct due to CH HSS influences.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Oct 19-Oct 21 2026

Oct 19 Oct 20 Oct 21
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Oct 19-Oct 21 2026

Oct 19 Oct 20 Oct 21
R1-R2 25% 25% 25%
R3 or greater 5% 5% 5%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
on 19-21 Oct.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Oct 22 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for Oct 22-Oct 24 2026 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Oct 22-Oct 24 2026

Oct 22 Oct 23 Oct 24
00-03UT 4.00 2.33 2.33
03-06UT 3.67 2.00 2.00
06-09UT 4.67 (G1) 1.67 1.67
09-12UT 3.33 1.00 1.33
12-15UT 2.67 1.33 3.00
15-18UT 2.00 1.67 3.67
18-21UT 2.33 2.00 4.33
21-00UT 2.67 2.00 4.00

Rationale: G1 (Minor) geomagnetic storm levels are expected early on 22
Oct due to CH HSS activity.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Oct 22-Oct 24 2026

Oct 22 Oct 23 Oct 24
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Oct 22-Oct 24 2026

Oct 22 Oct 23 Oct 24
R1-R2 20% 15% 15%
R3 or greater 5% 1% 1%

Rationale: Solar activity is expected to be at low levels through 24
Oct, with a slight chance (15-20%) for isolated M-class flares (R1-R2, Minor-Moderate).


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2026 Oct 25 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 25-Oct 27 2026 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Oct 25-Oct 27 2026

Oct 25 Oct 26 Oct 27
00-03UT 2.00 3.00 1.67
03-06UT 3.00 2.00 1.33
06-09UT 3.00 2.00 1.33
09-12UT 3.33 2.00 1.33
12-15UT 4.00 2.00 1.33
15-18UT 3.33 2.00 1.33
18-21UT 4.00 2.00 1.67
21-00UT 3.00 2.33 1.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Oct 25-Oct 27 2026

Oct 25 Oct 26 Oct 27
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Oct 25-Oct 27 2026

Oct 25 Oct 26 Oct 27
R1-R2 10% 10% 10%
R3 or greater 1% 1% 1%

Rationale: There is a slight chance for an isolated R1-R2
(Minor-Moderate) radio blackout over 25-27 Oct.


--- MBSE BBS v1.1.7.2 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)