799
FXXX02 KWNP 150156
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2025 Sep 15 0137 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
15 September - 11 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 reach high levels on 18-21 Sep and 06-11 Oct due to
recurrent CH HSS influences. Normal to moderate levels are expected
for the remainder of the outlook period.

Geomagnetic field activity is expected to be at G2 (Moderate) storm
levels on 15 Sep due to influences from negative polarity CH HSS.
Active to G1 (Minor) storm levels are expected on 16 Sep, 28-29 Sep,
03-07 Oct, and 11 Oct all due to recurrent CH HSS influences. Quiet
to unsettled levels are expected for the remaining days in the
outlook period.