701
FXXX10 KWNP 231231
DAYTDF

:Product: 3-Day Forecast
:Issued: 2026 Jan 23 1230 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
#             3-Day Forecast
#
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 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Jan 23-Jan 25 2026

             Jan 23       Jan 24       Jan 25
00-03UT       4.33         3.00         2.33
03-06UT       4.00         3.00         2.67
06-09UT       3.67         2.33         2.33
09-12UT       4.33         2.33         1.67
12-15UT       4.67 (G1)    1.67         1.33
15-18UT       3.67         1.67         1.33
18-21UT       2.33         2.00         2.00
21-00UT       2.67         2.33         2.33

Rationale: G1 (Minor) geomagnetic storms are possible on 23 Jan due to
periods of sustained -Bz in an ongoing 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 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 on 23-25 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   10%           10%           10%

Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely, with a
slight chance for R3 (Strong) events, on 23-25 Jan.