Message:18824 In: SPACWX.USA
From: N4SDDate: Sat, 14 Mar 26 12:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <9079_N4SD>
Path: N2MH4|N3MEL|KA3VSP|N4SD
R:260314/1711Z 29007@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260314/1711Z 13368@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260314/1708Z 55525@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260314/1232Z 9079@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 141231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Mar 14 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 6 (NOAA Scale
G2).
The greatest expected 3 hr Kp for Mar 14-Mar 16 2026 is 6.00 (NOAA Scale
G2).
NOAA Kp index breakdown Mar 14-Mar 16 2026
Mar 14 Mar 15 Mar 16
00-03UT 5.67 (G2) 4.00 3.67
03-06UT 6.00 (G2) 3.33 3.33
06-09UT 4.67 (G1) 2.00 2.67
09-12UT 4.00 2.00 2.00
12-15UT 5.67 (G2) 2.67 1.67
15-18UT 3.00 2.00 2.00
18-21UT 3.00 2.33 2.00
21-00UT 3.00 2.67 3.00
Rationale: G1-G2 (Minor-Moderate) geomagnetic storms are expected over
14 Mar due to influence from a positive polarity coronal hole.
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 14-Mar 16 2026
Mar 14 Mar 15 Mar 16
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 14-Mar 16 2026
Mar 14 Mar 15 Mar 16
R1-R2 20% 15% 15%
R3 or greater 1% 1% 1%
Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts over 14-16 Mar.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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