647
FXXX02 KWNP 110226
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2025 Aug 11 0200 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
11 August - 06 September 2025

Solar activity is expected to be at predominately low levels with
M-class flare (R1-R2/Minor-Moderate events) activity likely over 11
Aug-06 Sep.

No proton events are expected at geosynchronous orbit, barring
significant flare activity.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to reach high levels on 11-17, 21-22. 27-28 Aug, and on 06
Sep. Normal to moderate levels are expected to prevail throughout
the remainder of the period.

Geomagnetic field activity is expected to reach active levels on 11
Aug due to waning positive polarity CH HSS influence. Periods of G1
(Minor) storming are likely on 18-20 Aug, with periods of active
conditions likely on 22 Aug, due to negative polarity CH HSS
influence. Active conditions are likely again on 28 Aug in response
to anticipated negative polarity CH HSS influence. Periods of G2
(Moderate) storming are likely on 05 Sep, with active levels likely
on 04 and 06 Sep, due to positive polarity CH HSS influence.