Routine Space Environment Product Issued Weekly
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2
FXXX02 KWNP 230426

:Product: 27-day Space Weather Forecast
:Issued: 2015 Mar 23 0401 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
23 March - 18 April 2015

Solar activity is expected to be at low levels to begin the period.
Moderate activity is expected from 01-15 Apr with the anticipated
return of old Region 2297 followed by low levels for the remainder
of the period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at normal to moderate levels for the majority of the
period with a chance for high levels following southern polar
coronal hole high speed stream (CH HSS) effects on 30 Mar-01 Apr,
04-06 Apr, and 14-18 Apr.

Geomagnetic field activity is expected to reach minor storm levels
on 23 Mar followed by unsettled to active levels on 24-25 Mar due to
positive polarity CH HSS effects. Mostly quiet conditions are
expected on 26 Mar. Conditions are expected to increase to unsettled
to active levels from 27-31 Mar with minor storms likely on 28-29
Mar due to recurrent southern polar CH HSS effects. Mostly quiet
conditions are expected to prevail from 01-11 Apr with unsettled
conditions possible on 03-04 Apr due to positive polarity CH HSS
effects. Unsettled to active conditions are expected from 12-18 Apr
with minor storm conditions likely on 13-15 Apr due to a second
round of southern polar CH HSS effects. is the U.S. government's official web portal to all federal, state and local government web resources and services.