Message:19588 In: SPACWX.USA
From: N4SDDate: Wed, 25 Mar 26 14:29:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <9784_N4SD>
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FXXX10 KWNP 251231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Mar 25 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
#
# 3-Day Forecast
#
A. NOAA Geomagnetic Activity Observation and Forecast
The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for Mar 25-Mar 27 2026 is 5.33 (NOAA Scale
G1).
NOAA Kp index breakdown Mar 25-Mar 27 2026
Mar 25 Mar 26 Mar 27
00-03UT 3.00 3.00 2.33
03-06UT 3.33 2.00 2.67
06-09UT 5.33 (G1) 2.00 2.00
09-12UT 3.67 2.67 2.00
12-15UT 3.67 2.67 1.67
15-18UT 2.00 3.00 2.00
18-21UT 2.67 3.67 2.00
21-00UT 3.00 3.67 2.33
Rationale: No additional G1 (Minor) or greater geomagnetic storms are
expected.
B. NOAA Solar Radiation Activity Observation and Forecast
Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.
Solar Radiation Storm Forecast for Mar 25-Mar 27 2026
Mar 25 Mar 26 Mar 27
S1 or greater 1% 1% 1%
Rationale: No S1 (Minor) or greater solar radiation storms are expected.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Mar 25-Mar 27 2026
Mar 25 Mar 26 Mar 27
R1-R2 25% 25% 25%
R3 or greater 5% 5% 5%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
with a slight chance for R3 (Strong) events, through 27 Mar.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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