Routine Space Environment Product Issued Weekly
Issued by NWS
FXXX02 KWNP 220626
:Product: 27-day Space Weather Forecast
:Issued: 2014 Sep 22 0605 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
22 September - 18 October 2014
Solar activity is expected to be at predominately low levels with a
chance for M-class activity and a slight chance for X-class activity
through the outlook period. Regions currently on the disk with the
potential for major activity include Regions 2171 and 2172. Old
Regions 2155 (S19, L=110), 2157 (S15, L=099) and 2158 (N16, L=089),
producers of M and X-class activity on their previous transit, are
all due to return on or about 28-29 September.
No proton events are expected at geosynchronous orbit in the absence
of major solar activity.
The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be normal to moderate levels through 25 September.
Moderate to high levels are expected from 26 September to 03 October
followed by a return to mostly normal levels through 18 October.
Geomagnetic field activity is expected to be at predominately quiet
levels through the outlook period. Quiet to unsettled levels are
expected on 23-24 September due to a solar sector boundary crossing
followed by a co-rotating interaction region. Activity levels are
expected to increase to unsettled to active from 25-30 September due
to a series of positive polaritiy, equatorial CH HSSs. Unsettled to
active levels are expected on 15-17 October due to a negative
polarity CH HSS.