Routine Space Environment Product Issued Weekly
Issued by NWS

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FXXX02 KWNP 250455
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2017 Sep 25 0425 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
#               27-day Space Weather Forecast
#
Forecast of Solar and Geomagnetic Activity
25 September - 21 October 2017

Solar activity is expected to be at low levels, with a slight chance
for M-class activity (R1-R2, Minor-Moderate), from 25 Sep - 07 Oct
and from 20-21 Oct. This is primarily due to the flare potential
from Region 2682. Mostly very low levels are expected from 08-19
Oct.

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 26-27 Sep, 28 Sep - 09 Oct and
12-21 Oct due to CH HSS influence. Normal to moderate levels are
expected for the remainder of the outlook period.

Geomagnetic field activity is expected to be at unsettled to active
levels on 26 Sep and 30 Sep, with G1 (Minor) storm conditions are
expected on 27 Sep, 29 Sep and 11-14 Oct while G2 (Major) storm
conditions are expected on 28 Sep, all due to recurrent CH HSS
activity. Mostly quiet conditions are expected for the remainder of
the outlook period.



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