Routine Space Environment Product Issued Weekly
Issued by NWS

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1
317
FXXX02 KWNP 190156
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2026 Oct 19 0141 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
19 October - 14 November 2026

Solar activity is expected to predominately low with M-class flare
probabilities ranging between a slight chance to a chance 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 23-27 Oct and 01-04 Nov, with
normal to moderate levels likely the prevail throughout the
remainder of the period.

Geomagnetic field activity is likely to reach G1 (Minor) storm
levels on 19-20 Oct and 31 Oct-01 Nov, with active conditions likely
on 21 and 24 Oct and 09 Nov, due to CH HSS influences. Quiet and
quiet to unsettled levels are expected to prevail throughout the
remainder of the outlook period.