Routine Space Environment Product Issued Weekly
Issued by NWS
FXXX02 KWNP 240726
:Product: 27-day Space Weather Forecast
:Issued: 2016 Oct 24 0702 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 October - 19 November 2016
Solar activity is expected to be very low with a chance for C-class
activity throughout the outlook period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is
expected to reach high levels on 24-26 Oct, 30 Oct-6 Nov, and 12-19
Nov and very high levels 27-29 Oct. Normal to moderate levels are
expected 7-11 Nov. Enhancement in the 2 MeV electron flux is due to
the anticipation of multiple, recurrent CH HSSs.
Geomagnetic field activity is likely to reach major storm levels
(G2-Moderate) on 24-26 Oct, and minor storm levels (G1-Minor) on
27-29 Oct, due to the effects of a positive polarity CH HSS. Active
conditions are likely to linger through 01 Nov as effects of the CH
HSS wane. Thereafter, conditions are expected to be predominately
quiet with isolated unsettled periods through 10 Nov. Active
conditions are likely on 12 Nov, increasing to G1 storm conditions
on 13 Nov, under the influence of a negative polarity CH HSS.
Conditions are likely to decrease to unsettled from 14-15 Nov as CH
HSS effects wane. Quiet conditions are then expected on 16-18 Nov,
increasing to unsettled by 19 Nov with the onset of another positive
polarity CH HSS.