384
FXXX02 KWNP 220256
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2025 Sep 22 0241 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# https://www.swpc.noaa.gov/content/subscription-services
#
#               27-day Space Weather Forecast
#
Forecast of Solar and Geomagnetic Activity
22 September - 18 October 2025

Solar activity is expected to be at low levels with a chance for
isolated M-class flares throughout the outlook period.

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 on 22-24 Sep, 30 Sep and 01 Oct, 06
-11 Oct and 13-18 Oct. Normal to moderate levels are expected for
the remainder of the outlook period.

Geomagnetic field activity is expected to be at G1 (Minor) storm
levels on 22 Sep due to influences from a negative polarity CH HSS.
Unsettled to active levels are likely on 23 Sep. Unsettled to active
levels are likely on 29-30 Sep, 03-07 Oct, 11-13 Oct and 18 Oct due
to recurrent CH HSS influences. Quiet to unsettled levels are likely
for the remaining days in the outlook period.