Subj : 3 Day Space Weather Forecast
To   : All
From : Sean Dennis
Date : Tue Jul 08 2025 00:19:01

:Product: 3-Day Forecast
:Issued: 2025 Jul 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 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for Jul 08-Jul 10 2025 is 3.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Jul 08-Jul 10 2025

             Jul 08       Jul 09       Jul 10
00-03UT       3.67         1.67         1.67
03-06UT       3.67         1.33         1.33
06-09UT       2.67         1.33         1.33
09-12UT       3.00         1.33         1.33
12-15UT       2.67         1.33         1.67
15-18UT       2.67         1.33         1.33
18-21UT       1.67         1.67         1.67
21-00UT       1.67         1.67         1.33

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 Jul 08-Jul 10 2025

              Jul 08  Jul 09  Jul 10
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 Jul 08-Jul 10 2025

              Jul 08        Jul 09        Jul 10
R1-R2           10%           10%           10%
R3 or greater    1%            1%            1%

Rationale: There is a slight chance for R1 (Minor) or greater radio
blackouts all three days.



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