925
FXXX02 KWNP 290156
WEKFOR

:Product: 27-day Space Weather Forecast
:Issued: 2025 Dec 29 0129 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
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#               27-day Space Weather Forecast
#
Forecast of Solar and Geomagnetic Activity
29 December - 24 January 2026

Solar activity is expected to be predominately low through 24 Jan,
with C-class flares expected throughout the outlook period. M-class
flares (R1-R2/Minor-Moderate) range from a chance to likely at times
as active regions evolve and rotate on/off the disk. X-class flares
(R3-Strong or greater) range from a slight chance to a chance during
periods of enhanced active region complexity.

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 29-31 Dec, 03-06 and 14-24 Jan.
Normal to moderate levels are expected to prevail throughout the
remainder of the 29 Dec-24 Jan period.

Geomagnetic field activity is likely to reach active levels on 01
Jan in response to negative polarity CH HSS influences, and again
over 02-04 Jan following the onset of positive polarity CH HSS
influences. Periods of active conditions are likely on 09-10 and
12-14 Jan due to negative polarity CH HSS influences. Periods of G1
(Minor) storming are likely on 17-18 Jan, with active conditions
likely on 19-20 Jan, associated with positive polarity CH HSS
influences.