Routine Space Environment Product Issued Weekly
Issued by NWS
FXXX02 KWNP 240526
:Product: 27-day Space Weather Forecast
:Issued: 2015 Aug 24 0441 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
24 August - 19 September 2015
Solar activity is likely to be at moderate levels (R1-R2,
minor-moderate), with a slight chance for X-class flares (R3-Strong
or greater), from 24-29 August due to the flare potential from
Region 2403. Very low to low flare activity is expected from 30 Aug
to 10 Sep after Region 2403 rotates off the visible disk. A return
to moderate levels (R1-R2, minor-moderate), with a slight chance for
X-class flares (R3-Strong or greater), is likely from 11-19 Sep
after the return of old Region 2403 (S15, L=193).
No proton events are expected at geosynchronous orbit barring any
significant flare activity from Region 2403.
The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at moderate to high levels throughout the period.
Moderate levels are expected on 24 Aug, 27 Aug, 01-04 Sep, 09-12 Sep
and 19 Sep. High levels are expected from 25-26 Aug, 28-31 Aug,
05-08 Sep and 13-18 Sep.
Geomagnetic field activity is expected to be at G1 (minor) on 24 Aug
due to effects from the 21 and 22 Aug CMEs coupled with a positive
polarity CH HSS. G1 (minor) field activity is also expected on 03
Sep due to a positive polarity CH HSS. Unsettled to active levels
are expected on 25-29 Aug, 02 Sep, 04-06 Sep, 12-14 Sep, 16 Sep and
27 Sep due to recurrent CH HSS influences. Quiet to unsettled levels
are expected for the remainder of the outlook period.