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3 Day Space Weather Forecast
From
Sean Dennis@618:618/1 to
All on Tue Dec 30 00:19:02 2025
:Product: 3-Day Forecast
:Issued: 2025 Dec 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 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Dec 30-Jan 01 2026 is 5.00 (NOAA Scale
G1).
NOAA Kp index breakdown Dec 30-Jan 01 2026
Dec 30 Dec 31 Jan 01
00-03UT 1.33 1.67 5.00 (G1)
03-06UT 1.33 1.67 4.33
06-09UT 1.33 2.00 3.67
09-12UT 1.33 2.00 3.33
12-15UT 1.67 2.33 3.33
15-18UT 2.00 2.67 4.00
18-21UT 2.67 3.33 3.67
21-00UT 3.00 4.33 3.33
Rationale: No G1 (Minor) or greater geomagnetic storms are expected
through 31 Dec. G1 (Minor) geomagnetic storms are likely on 01 Jan due
to recurrent solar wind features combined with potential transient
features.
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 Dec 30-Jan 01 2026
Dec 30 Dec 31 Jan 01
S1 or greater 10% 10% 10%
Rationale: There is a slight chance for a flux above the S1 (Minor) or
greater threshold due to the flaring potential of the active regions on
the visible solar disk.
C. NOAA Radio Blackout Activity and Forecast
Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Dec 29 2025 0651 UTC.
Radio Blackout Forecast for Dec 30-Jan 01 2026
Dec 30 Dec 31 Jan 01
R1-R2 55% 55% 55%
R3 or greater 10% 10% 10%
Rationale: R1/R2 (Minor-Moderate) radio blackouts are likely on 30-31
Dec and 01 Jan due to the flare potential of the current active regions.
There is a slight chance for isolated R3 (Strong) events during the
3-day period.
--- MBSE BBS v1.1.6 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (618:618/1)
-
From
Sean Dennis@618:618/1 to
All on Fri Jan 2 00:19:02 2026
:Product: 3-Day Forecast
:Issued: 2026 Jan 02 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 Jan 02-Jan 04 2026 is 6.00 (NOAA Scale
G2).
NOAA Kp index breakdown Jan 02-Jan 04 2026
Jan 02 Jan 03 Jan 04
00-03UT 3.67 5.00 (G1) 3.67
03-06UT 3.00 6.00 (G2) 3.33
06-09UT 2.67 6.00 (G2) 2.00
09-12UT 2.67 4.67 (G1) 3.00
12-15UT 2.33 4.00 3.00
15-18UT 2.00 3.00 2.00
18-21UT 2.33 3.00 3.33
21-00UT 4.67 (G1) 4.33 3.33
Rationale: G1-G2 (Minor-Moderate) geomagnetic storms are likely over
02-03 Jan due to anticipated influence from multiple CMEs that left the
Sun over 28-30 Dec.
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 Jan 02-Jan 04 2026
Jan 02 Jan 03 Jan 04
S1 or greater 20% 10% 10%
Rationale: There is a slight chance for S1 (Minor) or greater solar
radiation storms over 02-04 Jan due to multiple complex regions on the
solar disk.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Jan 02-Jan 04 2026
Jan 02 Jan 03 Jan 04
R1-R2 55% 55% 55%
R3 or greater 20% 20% 20%
Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely over 02-04,
with a slight chance for R3 (Strong), primarily due to flare potential
from Regions 4325 and 4324.
--- MBSE BBS v1.1.6 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (618:618/1)
-
From
Sean Dennis@618:618/1 to
All on Mon Jan 5 00:19:02 2026
:Product: 3-Day Forecast
:Issued: 2026 Jan 05 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 Jan 05-Jan 07 2026 is 3.67 (below NOAA
Scale levels).
NOAA Kp index breakdown Jan 05-Jan 07 2026
Jan 05 Jan 06 Jan 07
00-03UT 1.67 2.33 1.67
03-06UT 2.67 1.67 1.67
06-09UT 2.33 1.67 1.33
09-12UT 3.67 1.33 1.33
12-15UT 2.33 1.33 1.33
15-18UT 1.00 1.33 1.33
18-21UT 1.33 1.00 1.67
21-00UT 2.67 0.67 1.33
Rationale: 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
below S-scale storm level thresholds.
Solar Radiation Storm Forecast for Jan 05-Jan 07 2026
Jan 05 Jan 06 Jan 07
S1 or greater 10% 10% 10%
Rationale: There remains a slight chance for S1 (Minor) or greater solar radiation storms over 05-07 Jan.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Jan 05-Jan 07 2026
Jan 05 Jan 06 Jan 07
R1-R2 50% 50% 50%
R3 or greater 10% 10% 10%
Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio
blackouts, with a slight chance for R3 (Strong), over 05-07 Jan.
--- MBSE BBS v1.1.6 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (618:618/1)
-
From
Sean Dennis@618:618/1 to
All on Thu Jan 8 00:19:02 2026
:Product: 3-Day Forecast
:Issued: 2026 Jan 08 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 Jan 08-Jan 10 2026 is 5.00 (NOAA Scale
G1).
NOAA Kp index breakdown Jan 08-Jan 10 2026
Jan 08 Jan 09 Jan 10
00-03UT 3.67 2.00 3.67
03-06UT 2.67 3.33 4.00
06-09UT 2.33 5.00 (G1) 3.33
09-12UT 2.33 4.67 (G1) 3.00
12-15UT 2.33 4.00 2.33
15-18UT 2.67 3.00 2.00
18-21UT 2.33 3.00 2.33
21-00UT 3.00 3.67 2.67
Rationale: G1 (Minor) or greater geomagnetic storms are anticipated on
09 Jan due to a coronal high speed stream interacting with a potential
glancing blow from a CME that left the Sun on 06 Jan.
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 Jan 08-Jan 10 2026
Jan 08 Jan 09 Jan 10
S1 or greater 10% 10% 10%
Rationale: There is a slight chance for a S1 (Minor) or greater solar
radiation storm 08-10 Jan.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Jan 08-Jan 10 2026
Jan 08 Jan 09 Jan 10
R1-R2 45% 45% 45%
R3 or greater 10% 10% 10%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
with a slight chance for R3 (Strong) or greater events, on 08-10 Jan.
--- MBSE BBS v1.1.7 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (618:618/1)
-
From
Sean Dennis@618:618/1 to
All on Sun Jan 11 00:19:02 2026
:Product: 3-Day Forecast
:Issued: 2026 Jan 11 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 6 (NOAA Scale
G2).
The greatest expected 3 hr Kp for Jan 11-Jan 13 2026 is 5.67 (NOAA Scale
G2).
NOAA Kp index breakdown Jan 11-Jan 13 2026
Jan 11 Jan 12 Jan 13
00-03UT 5.33 (G1) 3.67 3.00
03-06UT 5.67 (G2) 3.00 3.67
06-09UT 5.00 (G1) 3.00 3.33
09-12UT 4.33 3.00 3.00
12-15UT 3.00 3.00 2.00
15-18UT 3.00 3.67 2.00
18-21UT 3.33 3.33 3.33
21-00UT 3.67 3.33 3.33
Rationale: G1 (Minor) and G2 (Moderate) geomagnetic storms are likely
over 11 Jan due to influence of CMEs that departed the Sun on 08 Jan
combined with an anticipated CH HSS.
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 Jan 11-Jan 13 2026
Jan 11 Jan 12 Jan 13
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 Jan 11-Jan 13 2026
Jan 11 Jan 12 Jan 13
R1-R2 15% 15% 15%
R3 or greater 1% 1% 1%
Rationale: There exists a slight chance for R1-R2 (Minor-Moderate) radio blackouts over 11-13 Jan due primarily to the flare potential of Region
4336.
--- MBSE BBS v1.1.7 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (618:618/1)
-
From
Sean Dennis@618:618/1 to
All on Wed Jan 14 00:19:02 2026
:Product: 3-Day Forecast
:Issued: 2026 Jan 14 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 Jan 14-Jan 16 2026 is 3.67 (below NOAA
Scale levels).
NOAA Kp index breakdown Jan 14-Jan 16 2026
Jan 14 Jan 15 Jan 16
00-03UT 3.67 2.33 1.67
03-06UT 3.00 3.00 1.33
06-09UT 3.00 2.00 1.33
09-12UT 2.67 2.00 1.33
12-15UT 2.00 1.67 1.33
15-18UT 2.33 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.
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 Jan 14-Jan 16 2026
Jan 14 Jan 15 Jan 16
S1 or greater 1% 1% 1%
Rationale: No S1 (Minor) or greater solar radiation storms are expected.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Jan 14-Jan 16 2026
Jan 14 Jan 15 Jan 16
R1-R2 25% 25% 25%
R3 or greater 1% 1% 1%
Rationale: There is a chance (25%) R1-R2 (Minor-Moderate) radio
blackouts on 14-16 Jan.
--- MBSE BBS v1.1.7 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (618:618/1)
-
From
Sean Dennis@618:618/1 to
All on Sat Jan 17 00:19:01 2026
:Product: 3-Day Forecast
:Issued: 2026 Jan 17 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 Jan 17-Jan 19 2026 is 4.67 (NOAA Scale
G1).
NOAA Kp index breakdown Jan 17-Jan 19 2026
Jan 17 Jan 18 Jan 19
00-03UT 4.67 (G1) 3.67 3.67
03-06UT 4.33 3.00 3.00
06-09UT 4.00 3.00 3.00
09-12UT 3.67 3.00 3.00
12-15UT 3.33 3.67 3.00
15-18UT 3.33 3.33 3.33
18-21UT 3.67 4.67 (G1) 3.33
21-00UT 3.67 3.00 3.67
Rationale: G1 (Minor) geomagnetic storms are likely over 17-18 Jan due
to anticipated influence from a coronal hole.
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 Jan 17-Jan 19 2026
Jan 17 Jan 18 Jan 19
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 Jan 17-Jan 19 2026
Jan 17 Jan 18 Jan 19
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), over 17-19 Jan.
--- MBSE BBS v1.1.7 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (618:618/1)
-
From
Sean Dennis@618:618/1 to
All on Fri Jan 23 00:19:01 2026
:Product: 3-Day Forecast
:Issued: 2026 Jan 23 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 Jan 23-Jan 25 2026 is 5.67 (NOAA Scale
G2).
NOAA Kp index breakdown Jan 23-Jan 25 2026
Jan 23 Jan 24 Jan 25
00-03UT 4.67 (G1) 3.00 2.33
03-06UT 4.67 (G1) 3.00 2.67
06-09UT 5.67 (G2) 2.33 2.33
09-12UT 3.33 2.33 1.67
12-15UT 3.67 1.67 1.33
15-18UT 3.00 1.67 1.33
18-21UT 2.33 2.00 2.00
21-00UT 2.67 2.33 2.33
Rationale: G1-G2 (Minor-Moderate) geomagnetic storms are expected on 23
Jan due to persistent 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
above S-scale storm level thresholds.
Solar Radiation Storm Forecast for Jan 23-Jan 25 2026
Jan 23 Jan 24 Jan 25
S1 or greater 10% 10% 10%
Rationale: There is a slight chance for S1 (Minor) or greater solar
radiation storms through 25 Jan.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Jan 23-Jan 25 2026
Jan 23 Jan 24 Jan 25
R1-R2 60% 60% 60%
R3 or greater 15% 15% 15%
Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely, with a
slight chance for R3 (Strong) events, on 23-25 Jan.
--- MBSE BBS v1.1.7 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (618:618/1)
-
From
Sean Dennis@618:618/1 to
All on Mon Jan 26 00:19:01 2026
:Product: 3-Day Forecast
:Issued: 2026 Jan 26 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 Jan 26-Jan 28 2026 is 4.67 (NOAA Scale
G1).
NOAA Kp index breakdown Jan 26-Jan 28 2026
Jan 26 Jan 27 Jan 28
00-03UT 3.67 2.00 4.00
03-06UT 2.67 1.67 4.67 (G1)
06-09UT 2.00 2.00 3.33
09-12UT 2.00 1.67 3.00
12-15UT 1.33 1.67 3.33
15-18UT 1.33 2.00 3.67
18-21UT 1.00 2.33 4.00
21-00UT 1.33 3.33 4.00
Rationale: G1 (Minor) geomagnetic storming is likely on 28 Jan due to
negative polarity 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 Jan 26-Jan 28 2026
Jan 26 Jan 27 Jan 28
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
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Jan 26-Jan 28 2026
Jan 26 Jan 27 Jan 28
R1-R2 45% 40% 35%
R3 or greater 5% 5% 1%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
over 26-28 Jan.
--- MBSE BBS v1.1.7 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (618:618/1)