966
FXXX10 KWNP 031231
DAYTDF

:Product: 3-Day Forecast
:Issued: 2025 Aug 03 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 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Aug 03-Aug 05 2025 is 3.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Aug 03-Aug 05 2025

             Aug 03       Aug 04       Aug 05
00-03UT       2.00         1.67         0.67
03-06UT       1.67         1.67         2.00
06-09UT       1.33         1.67         2.67
09-12UT       1.67         1.33         1.33
12-15UT       1.33         1.33         2.00
15-18UT       1.00         1.33         3.00
18-21UT       1.00         1.33         1.67
21-00UT       1.00         1.33         2.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected.

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 Aug 03-Aug 05 2025

              Aug 03  Aug 04  Aug 05
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 Aug 03-Aug 05 2025

              Aug 03        Aug 04        Aug 05
R1-R2           30%           30%           30%
R3 or greater    5%            5%            5%

Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio
blackouts over 03-05 Aug.