Routine Space Environment Product Issued Weekly
Issued by NWS

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FXXX02 KWNP 180355
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2017 Dec 18 0340 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
18 December - 13 January 2018

Solar activity is expected to be at very low levels throughout the
forecast period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to reach moderate levels on 18 Dec, 22 Dec - 01 Jan, and
07-13 Jan; high levels are likely on 19-21 Dec and 02-06 Jan. All
increases in electron flux are anticipated due to the expected
influence of recurrent CH HSSs.

Geomagnetic field activity is expected to reach G1 (Minor) storm
levels on 18-19 Dec, 01 Jan, and 13 Jan. Active conditions are
likely on 20 Dec, 27 Dec, 02 Jan, and 08 Jan. Unsettled levels are
likely on 21-22 Dec, 28 Dec, 31 Dec, 03 Jan and 09 Jan. All
elevations in geomagnetic field activity are anticipated from
multiple, recurrent CH HSSs. The remainder of the forecast period is
expected to observe quiet conditions.



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