719
FXXX10 KWNP 011231
DAYTDF

:Product: 3-Day Forecast
:Issued: 2026 Nov 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 6 (NOAA Scale
G2).
The greatest expected 3 hr Kp for Nov 01-Nov 03 2026 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Nov 01-Nov 03 2026

             Nov 01       Nov 02       Nov 03
00-03UT       4.67 (G1)    2.67         1.67
03-06UT       4.33         3.00         2.00
06-09UT       3.33         3.00         1.67
09-12UT       3.33         2.67         1.33
12-15UT       3.67         2.00         0.67
15-18UT       2.67         2.00         0.67
18-21UT       2.67         1.67         1.67
21-00UT       2.67         2.00         1.33

Rationale: Periods of G1 (Minor) geomagnetic storming are likely on 01
Nov due to positive polarity CH HSS influences.

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 Nov 01-Nov 03 2026

              Nov 01  Nov 02  Nov 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 Nov 01-Nov 03 2026

              Nov 01        Nov 02        Nov 03
R1-R2            1%            1%            1%
R3 or greater    1%            1%            1%

Rationale: No R1 (Minor) or greater radio blackouts are expected. No
significant active region flare activity is forecast.