Subj : 3 Day Space Weather Forecast
To   : All
From : Sean Dennis
Date : Sat Nov 22 2025 00:19:01

:Product: 3-Day Forecast
:Issued: 2025 Nov 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 Nov 22-Nov 24 2025 is 3.33 (below NOAA
Scale levels).

NOAA Kp index breakdown Nov 22-Nov 24 2025

             Nov 22       Nov 23       Nov 24
00-03UT       3.33         1.67         1.67
03-06UT       2.67         1.33         1.33
06-09UT       2.33         1.33         1.33
09-12UT       1.67         1.33         1.33
12-15UT       1.33         1.33         1.33
15-18UT       1.33         1.33         1.33
18-21UT       1.33         1.67         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 Nov 22-Nov 24 2025

              Nov 22  Nov 23  Nov 24
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 Nov 22-Nov 24 2025

              Nov 22        Nov 23        Nov 24
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 22-24 Nov.



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