051
FXXX02 KWNP 170356
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2025 Nov 17 0337 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
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#               27-day Space Weather Forecast
#
Forecast of Solar and Geomagnetic Activity
17 November - 13 December 2025

Solar activity is likely to be at R1 (Minor) levels on 12-27 Nov and
13 Dec. Levels are likely to increase to R1-R3 (Minor-Strong) levels
on 28 Nov-30 Nov and 01-12 Dec, primarily due to the flare potential
and return of old Region 4274 (N24, L=275).

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at high levels over 18-19, 22-23 and 27-30 Nov and
01-02 and 07-12 Dec, all due to coronal hole influence. The
remainder of the outlook period is likely to be at normal to
moderate levels.

Geomagnetic field activity is expected to range from quiet to G2
(Moderate) geomagnetic storm levels. G1 (Minor) conditions are
likely on 17 Nov due to anticipated influence both a negative
polarity CH HSS and waning remants from a CME. G2 (Moderate) levels
are likely on 26 Nov, 03 Dec and 13 Dec due to CH HSS influence.
Unsettled to active conditions are likely on 18-19, 21-22, 24-25 and
27-30 Nov and 01-02 and 04-07 Dec, all due to CH HSS influence.
Mostly quiet levels are expected on 20 and 23 Nov and 08-12 Dec.