Message:20356 In: SPACWX.USA
From: N4SDDate: Mon, 06 Apr 26 00:31:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <10603_N4SD>
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FXXX10 KWNP 060031
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Apr 06 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 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Apr 06-Apr 08 2026 is 3.00 (below NOAA
Scale levels).
NOAA Kp index breakdown Apr 06-Apr 08 2026
Apr 06 Apr 07 Apr 08
00-03UT 2.67 2.67 1.67
03-06UT 3.00 2.67 1.67
06-09UT 2.67 2.67 1.67
09-12UT 2.67 2.00 1.33
12-15UT 2.00 0.67 0.67
15-18UT 1.67 0.67 0.67
18-21UT 1.67 1.67 1.67
21-00UT 2.67 2.67 2.00
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 Apr 06-Apr 08 2026
Apr 06 Apr 07 Apr 08
S1 or greater 15% 15% 15%
Rationale: There is a slight chance for the greater than 10 MeV proton
flux to exceed S1 (Minor) solar radiation storm levels over 06-08 Apr.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Apr 06-Apr 08 2026
Apr 06 Apr 07 Apr 08
R1-R2 55% 55% 55%
R3 or greater 15% 15% 15%
Rationale: R1 (Minor) radio blackout levels are likely, with a slight
chance for an isolated R3 (Strong) event over 06-08 Apr, driven
primarily by the flare potential of Region 4409.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-East satellite downlink
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