Message:22977 In: SPACWX.USA
From: N4SDDate: Sun, 24 May 26 00:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <14018_N4SD>
Path: N2MH4|N3MEL|KA3VSP|N4SD
R:260524/0508Z 31603@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260524/0507Z 17749@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260524/0459Z 2455@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260524/0032Z 14018@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 240031
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 May 24 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
#
# 3-Day Forecast
#
A. NOAA Geomagnetic Activity Observation and Forecast
The greatest observed 3 hr Kp over the past 24 hours was 1 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for May 24-May 26 2026 is 3.00 (below NOAA
Scale levels).
NOAA Kp index breakdown May 24-May 26 2026
May 24 May 25 May 26
00-03UT 1.67 1.67 1.33
03-06UT 1.67 1.33 2.00
06-09UT 1.33 1.33 2.33
09-12UT 1.33 1.33 2.00
12-15UT 1.33 1.67 2.00
15-18UT 1.33 1.33 2.00
18-21UT 1.33 1.67 2.00
21-00UT 1.67 1.33 3.00
Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No
significant transient or recurrent solar wind features are forecast.
B. NOAA Solar Radiation Activity Observation and Forecast
Solar radiation, as observed by NOAA GOES-19 over the past 24 hours, was
below S-scale storm level thresholds.
Solar Radiation Storm Forecast for May 24-May 26 2026
May 24 May 25 May 26
S1 or greater 5% 5% 5%
Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for May 24-May 26 2026
May 24 May 25 May 26
R1-R2 35% 35% 35%
R3 or greater 5% 5% 5%
Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio
blackouts over 24-26 May primarily due to Region 4441 and the complexity
and activity of new regions rotating from the eastern limb including
Region 4446.
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73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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