3-Day Forecast

Issued: 2025 Apr 10 0030 UTC
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and processed by SpaceWeatherLive.com

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 Apr 10-Apr 12 2025 is 3 (.67below NOAA Scale levels).

NOAA Kp index breakdown

             Apr 10       Apr 11       Apr 12
00-03UT       3.00         3.33         3.33     
03-06UT       3.33         3.67         3.33     
06-09UT       3.00         3.67         3.67     
09-12UT       2.33         3.00         3.67     
12-15UT       2.00         3.00         3.33     
15-18UT       2.00         3.33         3.33     
18-21UT       2.33         3.00         3.33     
21-00UT       3.00         3.00         3.67     

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 Apr 10-Apr 12 2025

              Apr 10  Apr 11  Apr 12
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 Apr 10-Apr 12 2025

              Apr 10        Apr 11        Apr 12
R1-R2           45%           45%           45%
R3 or greater    5%            5%            5%

Rationale

There is a chance for R1-R2 (Minor-Moderate) radio blackouts on 10-12 Apr.