Message:23035 In: SPACWX.USA
From: N4SDDate: Mon, 25 May 26 00:31:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather Forecast Discussion
Message-ID: <14120_N4SD>
Path: N2MH4|N3MEL|KA3VSP|N4SD
R:260525/0351Z 31633@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260525/0350Z 17799@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260525/0343Z 2494@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260525/0031Z 14120@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX12 KWNP 250031
DAYDIS
:Product: Forecast Discussion
:Issued: 2026 May 25 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
#
# Forecastlare that peaked at
23/2359 UTC, with activity steadily declining throughout the rest of the
period. There was a stray Type II radio sweep (est. 579 km/s) at 24/0850
UTC that was likely from a far-sided event. The CME signatures
identified in available coronagraph imagery were associated with
activity on or behind the Suns limb. No Earth-directed CMEs were
observed in available satellite imagery.
Newly numbered Region 4447 (S17E23, Dao/beta) was a separation of the
nied in available coronagraph imagery were associated with
activity on or behind the Suns limb. No Earth-directed CMEs were
observed in available satellite imagery.
Newly numbered Region 4447 (S17E23, Dao/beta) was a separation of the
nate) on 25-27 May, primarily
due to the flare potential of Region 4441 and Region 4446.
Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux at geosynchronous orbit remained at
moderate to high levels, reaching a peak level of 5,512 pfu at 24/1845
UTC. The greater than 10 MeV proton flux at geosynchronous orbit
remained at background levels.
.Forecast...
The greater than 2 MeV electron flux is expected to remain at moderate
to high levels on 25-27 May. The greater than 10 MeV proton flux is
expected to remain at background levels through 27 May.
Solar Wind
.24 hr Summary...
Solar wind parameters were indicative of near-background conditions.
Wind speeds ranged from 270-356 km/s. Total magnetic field strength
varied from 1-6 nT, Bz ranged between +/-5 nT, and the phi angle was
predominantly in a negative orientation. The only enhancement in the
solar wind parameters was an increase in density, rising from around 1
ppcm/3 to around 12 ppcm/3.
.Forecast...
Primarily ambient conditions are expected for 25 May under a continued
background solar wind regime. Late on 26 May and into 27 May,
enhancements to the solar wind environment are possi. Periods of unsettled conditions are possible,
with a chance for an isolated active periods, late on 26 May lasting
into 27 May, with the likely onset of an approaching -CH HSS.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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