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FXXX02 KWNP 250626
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2026 May 25 0601 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
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#               27-day Space Weather Forecast
#
Forecast of Solar and Geomagnetic Activity
25 May - 20 June 2026

Solar activity is expected to be at low to moderate levels (R1-R2,
Minor-Moderate) on 25 May through 07 Jun with the return of old
Region 4432 (N14, L=081). Mostly low levels with a chance for
M-class flares is expected from 08-20 Jun.

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 25-27 May and 12-20 Jun due to CH
HSS influences.

Geomagnetic field activity is expected to be at unsettled to active
levels on 27-29 May, 04 Jun, 09 Jun, and 11-15 Jun due to recurrent
CH HSS activity. G2 (Moderate) storm conditions are likely on 11 Jun
and G1 (Minor) storming on 12 Jun due to CIR/CH HSS onset.