249
FXXX10 KWNP 011231
DAYTDF

:Product: 3-Day Forecast
:Issued: 2025 Aug 01 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 01-Aug 03 2025 is 3.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Aug 01-Aug 03 2025

             Aug 01       Aug 02       Aug 03
00-03UT       2.67         1.67         1.67
03-06UT       2.67         3.00         1.33
06-09UT       2.67         2.67         1.33
09-12UT       2.67         2.33         1.33
12-15UT       1.33         2.00         1.33
15-18UT       1.67         1.33         1.33
18-21UT       2.00         1.33         1.67
21-00UT       2.33         1.67         1.67

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 01-Aug 03 2025

              Aug 01  Aug 02  Aug 03
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 01-Aug 03 2025

              Aug 01        Aug 02        Aug 03
R1-R2           30%           30%           30%
R3 or greater    5%            5%            5%

Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio
blackouts over 01-03 Aug.