Message:24446 In: SPACWX.USA
From: N4SDDate: Sat, 20 Jun 26 00:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather Forecast Discussion
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FXXX12 KWNP 200031
DAYDIS
:Product: Forecast Discussion
:Issued: 2026 Jun 20 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 low levels. Region 4470 (N06E28, Dao/beta)
produced a C4.2/1f flare at 19/1938 UTC, the strongest of the period.
All spotted active regions were either stable or in gradual decay.
Other activity included a small filament eruption near S20E20 that began
after 19/0300 UTC. A faint, slow-moving CME signature appeared in
STEREO-A COR2 imagery but was not apparent in other available
coronagraph imagery. Analysis and modeling of the event indicated most
of the ejecta will likely miss behind Earths orbit, with a slight
possibility of a portion grazing Earth by mid to late on 23 Jun.
.Forecast...
Solar activity is expected to continue at low levels on 20-22 Jun, with
a slight chance for M-class (R1-Minor) flares.
Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux reached moderate levels. The
greater than 10 MeV proton flux remained at background values.
.Forecast...
The greater than 2 MeV electron flux is expected to reach moderate
levels over 20-22 Jun. The greater than 10 MeV proton flux is expected
to remain at background levels through 22 Jun.
Solar Wind
.24 hr Summary...
Solar wind parameters were slightly enhanced this period. Total magnetic
field strength reached 10 nT, the Bz component was observed as far
south as -7 nT, and solar wind speeds ranged from ~330-460 km/s. Phi
angle was primarily oriented in a positive solar sector.
.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 20 Jun in
response to weak, yet persistent CH HSS influences. Quiet to unsettled
levels are likely on 21-22 Jun as CH HSS influences diminish.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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