978
FXXX10 KWNP 080031
DAYTDF

:Product: 3-Day Forecast
:Issued: 2026 Aug 08 0030 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 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Aug 08-Aug 10 2026 is 3.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Aug 08-Aug 10 2026

             Aug 08       Aug 09       Aug 10
00-03UT       2.67         3.33         2.33
03-06UT       2.67         3.67         2.00
06-09UT       2.33         3.33         2.00
09-12UT       2.33         2.33         2.00
12-15UT       1.33         2.00         2.00
15-18UT       1.33         2.00         2.00
18-21UT       2.00         3.33         2.00
21-00UT       2.33         3.33         2.33

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 Aug 08-Aug 10 2026

              Aug 08  Aug 09  Aug 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 Aug 08-Aug 10 2026

              Aug 08        Aug 09        Aug 10
R1-R2           10%           10%            5%
R3 or greater    1%            1%            1%

Rationale: There is a slight chance for R1 (Minor) or greater radio
blackouts on 08-10 Aug.