Routine Space Environment Product Issued Weekly
Issued by NWS

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1
642
FXXX02 KWNP 190256
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2025 May 19 0221 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# https://www.swpc.noaa.gov/content/subscription-services
#
#               27-day Space Weather Forecast
#
Forecast of Solar and Geomagnetic Activity
19 May - 14 June 2025

Solar activity is expected to be at low levels, with a chance for
R1-R2 (Minor-Moderate) events, over the outlook period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
likely to reach high levels on 19-23 May, 29 May - 05 Jun, and 14
Jun in response to recurrent coronal hole activity. The remainder of
the outlook period is expected to be at normal to moderate levels.

Geomagnetic field activity is likely to elevated above quiet levels
for most of the next 27 days due to multiple, recurrent, coronal
hole features. G2 (moderate) conditions are likely on 29 May and 13
Jun; G1 (minor) conditions likely on 19 May, 28 May, and 14 Jun;
active conditions are likely on 30 May - 01 Jun, and 10 Jun;
unsettled levels are likely on 20-23 May, 27 May, 02-07 Jun, and
11-12 Jun. Quiet conditions are expected for the few remaining days
of the outlook period.