Message:20589 In: SPACWX.USA
From: N4SDDate: Fri, 10 Apr 26 00:43:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather Forecast Discussion
Message-ID: <10854_N4SD>
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FXXX12 KWNP 100031
DAYDIS
:Product: Forecast Discussion
:Issued: 2026 Apr 10 0030 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
# Forecast Discussion
#
Solar Activity
.24 hr Summary...
Solar activity was at moderate levels. Region 4409 (N01W85,
Esi/beta-delta) produced an M1.0/Sf (R1-Minor) flare at 09/0845 UTC, the
strongest of the period. No growth was observed in any of the numbered
active regions over the past 24 hours. No Earth-directed CMEs were
observed in available coronagraph imagery.
.Forecast...
Solar activity is expected to be at low levels 10-12 Apr, with a chance
for M-class (R1-R2/Minor-Moderate) flares on 10 Apr.
Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux was at high levels with a peak flux
of 10,679 pfu at 09/1605 UTC. The greater than 10 MeV proton flux was at
background levels.
.Forecast...
The greater than 2 MeV electron flux is expected to be at moderate
levels over 10-12 Apr due to the anticipated arrival of a corotating
interacting region (CIR) ahead of a positive polarity coronal hole high
speed stream (+CH HSS). The greater than 10 MeV proton flux is expected
to remain at background levels.
Solar Wind
.24 hr Summary...
Solar wind parameters were near nominal levels, with a small enhancement
to the IMF observed after 09/1100 UTC. Total magnetic field strength
gradually increased from ~5 nT to a peak of 10 nT late in the UT day. Bz
was observed as far south as -8 nT. Solar wind speeds were mostly below
400 km/s, with the exception of a brief increase to ~420 km/s around
09/1100 UTC. Phi angle was variable, but predominantly in a negative
orientation.
.Forecast...
Enhancements in solar wind parameters are likely over 10-12 Apr due to
the anticipated influence of a CIR and the subsequent onset of a +CH
HSS.
Geospace
.24 hr Summary...
The geomagnetic field was at quiet levels.
.Forecast...
The geomagnetic field is likely to reach G1 (Minor) storm levels over
10-11 Apr due to the influence of a +CH HSS. Active conditions are
likely on 12 Apr as the HSS gradually wanes.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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