Message:18552 In: SPACWX.USA
From: N4SDDate: Tue, 10 Mar 26 12:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <8778_N4SD>
Path: N2MH4|N3MEL|KA3VSP|N4SD
R:260310/1409Z 28823@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260310/1405Z 13073@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260310/1402Z 55350@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260310/1232Z 8778@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 101231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Mar 10 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 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Mar 10-Mar 12 2026 is 3.33 (below NOAA
Scale levels).
NOAA Kp index breakdown Mar 10-Mar 12 2026
Mar 10 Mar 11 Mar 12
00-03UT 3.33 2.67 1.67
03-06UT 2.67 2.33 1.33
06-09UT 2.33 2.00 1.33
09-12UT 3.00 1.00 1.33
12-15UT 1.00 1.33 1.33
15-18UT 1.00 1.33 1.67
18-21UT 1.67 1.67 1.33
21-00UT 2.00 1.67 1.67
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-18 over the past 24 hours, was
below S-scale storm level thresholds.
Solar Radiation Storm Forecast for Mar 10-Mar 12 2026
Mar 10 Mar 11 Mar 12
S1 or greater 1% 1% 1%
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 Mar 10-Mar 12 2026
Mar 10 Mar 11 Mar 12
R1-R2 20% 20% 20%
R3 or greater 1% 1% 1%
Rationale: There exists a slight chance for R1-R2 (Minor-Moderate) radio
blackouts over 10-12 Mar.
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73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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