511
FXXX10 KWNP 240031
DAYTDF

:Product: 3-Day Forecast
:Issued: 2026 Oct 24 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 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 24-Oct 26 2026 is 3.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Oct 24-Oct 26 2026

             Oct 24       Oct 25       Oct 26
00-03UT       2.67         3.00         2.33
03-06UT       2.33         3.33         2.00
06-09UT       3.67         3.67         2.00
09-12UT       2.00         3.33         2.00
12-15UT       1.00         3.67         2.00
15-18UT       0.67         3.00         2.00
18-21UT       1.67         3.33         2.00
21-00UT       1.67         3.00         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 Oct 24-Oct 26 2026

              Oct 24  Oct 25  Oct 26
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 Oct 24-Oct 26 2026

              Oct 24        Oct 25        Oct 26
R1-R2           15%           15%           15%
R3 or greater    1%            1%            1%

Rationale: There is a slight chance for isolated R1-R2 (Minor-Moderate)
radio blackouts over 24-26 Oct.