346
FXXX10 KWNP 300031
DAYTDF

:Product: 3-Day Forecast
:Issued: 2026 Jul 30 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 Jul 30-Aug 01 2026 is 4.33 (below NOAA
Scale levels).

NOAA Kp index breakdown Jul 30-Aug 01 2026

             Jul 30       Jul 31       Aug 01
00-03UT       3.00         4.00         3.00
03-06UT       1.67         4.33         2.33
06-09UT       2.00         3.00         2.00
09-12UT       2.00         2.33         1.33
12-15UT       2.00         2.00         4.00
15-18UT       2.67         2.00         3.67
18-21UT       3.33         2.33         3.00
21-00UT       4.00         3.00         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 30-Aug 01 2026

              Jul 30  Jul 31  Aug 01
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 30-Aug 01 2026

              Jul 30        Jul 31        Aug 01
R1-R2           25%           25%           25%
R3 or greater    1%            1%            1%

Rationale: Solar activity is expected to be low with a chance for
M-class flares (R1-R2, Minor-Moderate) through 01 Aug.