Routine Space Environment Product Issued Weekly
Issued by NWS

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FXXX02 KWNP 210457

:Product: 27-day Space Weather Forecast
:Issued: 2017 Aug 21 0435 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
#               27-day Space Weather Forecast
Forecast of Solar and Geomagnetic Activity
21 August - 16 September 2017

Solar activity is expected to be at low levels with a chance for
M-class (R1-R2, Minor-Moderate) activity from Regions 2671 and 2672
from 21 Aug-02 Sep and again from 08-16 Sep when both regions return
to the visible disk. Very low levels are expected from 03-07 Sep.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to reach high levels from 21-30 Aug, 01-07 Sep, 11-13 Sep,
and again from 15-16 Sep due to recurrent CH HSS influence.

Geomagnetic field activity is expected to be at unsettled to active
levels from 21-22 Aug, 30 Aug-02 Sep, 08-09 Sep, and from 13-16 Sep
with G1 (Minor) storm levels likely on 31 Aug, and 13-16 Sep due to
recurrent CH HSS activity. is the U.S. government's official web portal to all federal, state and local government web resources and services.