Message:24430 In: SPACWX.USA
From: N4SDDate: Fri, 19 Jun 26 12:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather Forecast Discussion
Message-ID: <16512_N4SD>
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FXXX12 KWNP 191231
DAYDIS
:Product: Forecast Discussion
:Issued: 2026 Jun 19 1230 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 low levels. New Region 4472 (S13E75, Hax/alpha)
produced a C1.2 flare at 18/2204 UTC, the strongest of the period, as
the region rotated into view from the E limb. Region 4471 (N18E05,
Dao/beta) exhibited growth early this period, but was stable through
the latter half of the day. The remaining regions were either stable
or in decay. No Earth-directed CMEs were observed in available
coronagraph imagery.
.Forecast...
Solar activity is expected to continue at low levels on 19-21 Jun, with
a slight chance for M-class (R1-Minor) flares.
Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux reached high levels with a peak
flux of 1,920 pfu observed. The greater than 10 MeV proton flux remained
at background values.
.Forecast...
The greater than 2 MeV electron flux is expected to reach high levels on
19 Jun, before decreasing to normal to moderate levels on 20-21 Jun. The
greater than 10 MeV proton flux is expected to remain at background
levels through 21 Jun.
Solar Wind
.24 hr Summary...
The interplanetary magnetic field became slightly enhanced after 19/0715
UTC. Total field strength reached 9 nT, while the Bz component reached
as far south as -8 nT. Solar wind speeds increased from ~350 km/s to
~400 km/s by the end of the period.
.Forecast...
Solar wind parameters are expected to remain enhanced through 21 Jun due
to CH HSS influences.
Geospace
.24 hr Summary...
The geomagnetic field was at quiet to unsettled levels this period.
.Forecast...
The geomagnetic field is likely to reach active levels on 19-20 Jun in
response to CH HSS influences. Quiet to unsettled levels are likely on
21 Jun as CH HSS influences diminish.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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