Subj : 3 Day Space Weather Forecast
To   : All
From : Sean Dennis
Date : Tue Jul 07 2026 00:19:01

:Product: 3-Day Forecast
:Issued: 2026 Jul 07 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 Jul 07-Jul 09 2026 is 3.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Jul 07-Jul 09 2026

             Jul 07       Jul 08       Jul 09
00-03UT       1.67         1.33         3.00     
03-06UT       1.33         1.33         3.67     
06-09UT       1.33         1.33         2.67     
09-12UT       1.67         1.67         2.67     
12-15UT       1.67         1.33         2.67     
15-18UT       1.33         1.33         2.00     
18-21UT       1.33         1.67         2.00     
21-00UT       1.33         1.67         2.67     

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 Jul 07-Jul 09 2026

              Jul 07  Jul 08  Jul 09
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 Jul 07-Jul 09 2026

              Jul 07        Jul 08        Jul 09
R1-R2           55%           20%           20%
R3 or greater   10%            5%            5%

Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely on Jul 07.
There is a slight chance for R1-R2 radio blackout events on July 08-09.


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