Routine Space Environment Product Issued Weekly
Issued by NWS
FXXX02 KWNP 250826
:Product: 27-day Space Weather Forecast
:Issued: 2014 Aug 25 0742 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
25 August - 20 September 2014
Solar activity is expected to be low with M-class flares (R1-R2,
Minor-Moderate) likely and a slight chance for X-class flares
(R3-Strong) from 25 August through 03 September as Regions 2146,
2149, and 2151 transit across the visible disk. From 04-20 September
very low to low levels are expected.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be normal to moderate levels. A chance for high levels
exists from 31 August through 04 September and again from 08-10
September due to coronal hole high speed stream (CH HSS) influence.
Geomagnetic field activity is expected to be at quiet to active
conditions from 26-28 August as the CMEs from 22 August are expected
to impact the geomagnetic field. Unsettled to active conditions are
expected to continue through 02 September as a pair of positive
polarity CH HSS are expected to become geoeffective. A recurrent
negative polarity CH HSS is expected to cause unsettled to active
levels on 07-08 September, while solar sector boundary crossings may
cause unsettled periods on 06 September and 13 September.