Message:18312 In: SPACWX.USA
From: N4SDDate: Thu, 05 Mar 26 12:31:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <8374_N4SD>
Path: N2MH4|WB4WPF|KA3VSP|N4SD
R:260305/2129Z 28688@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260305/2128Z 7608@WB4WPF.#SFL.FL.USA.NOAM LinBPQ6.0.25
R:260305/2125Z 55153@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260305/1231Z 8374@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 051231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Mar 05 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 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Mar 05-Mar 07 2026 is 4.67 (NOAA Scale
G1).
NOAA Kp index breakdown Mar 05-Mar 07 2026
Mar 05 Mar 06 Mar 07
00-03UT 1.67 3.33 3.67
03-06UT 0.67 3.33 3.33
06-09UT 1.67 3.00 2.00
09-12UT 0.33 2.67 1.67
12-15UT 1.00 3.00 3.00
15-18UT 2.33 4.00 3.33
18-21UT 2.33 4.67 (G1) 3.67
21-00UT 3.33 4.33 3.33
Rationale: Isolated G1 (Minor) geomagnetic storms are possible on 06 Mar
due to the anticipated arrival of a CIR ahead of a CH HSS.
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 05-Mar 07 2026
Mar 05 Mar 06 Mar 07
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 05-Mar 07 2026
Mar 05 Mar 06 Mar 07
R1-R2 20% 20% 20%
R3 or greater 1% 1% 1%
Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts through 07 Mar.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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