Message 22870 in SPACWX.USA
From: N4SD
Date: Fri, 22 May 26 00:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <13833_N4SD>
Path: N2MH4|WB4WPF|KA3VSP|N4SD
R:260522/0528Z 31542@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260522/0528Z 12575@WB4WPF.#SFL.FL.USA.NOAM LinBPQ6.0.25
R:260522/0524Z 2367@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260522/0032Z 13833@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 220031
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 May 22 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 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for May 22-May 24 2026 is 2.67 (below NOAA
Scale levels).
NOAA Kp index breakdown May 22-May 24 2026
May 22 May 23 May 24
00-03UT 2.67 2.33 1.67
03-06UT 2.67 2.67 1.67
06-09UT 2.00 2.33 1.33
09-12UT 1.67 1.67 1.33
12-15UT 0.67 1.67 1.33
15-18UT 1.67 2.00 1.33
18-21UT 2.00 2.33 1.33
21-00UT 2.67 2.33 1.67
Rationale: No G1 (Minor) or greater geomagnetic storms are expected.
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 22-May 24 2026
May 22 May 23 May 24
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 22-May 24 2026
May 22 May 23 May 24
R1-R2 25% 25% 25%
R3 or greater 5% 5% 5%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
through 24 May.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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