Message:20431 In: SPACWX.USA
From: N4SDDate: Tue, 07 Apr 26 12:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <10700_N4SD>
Path: K7EK|N9SEO|WW6Q|W9GM|KA3BVJ|N3IP|KA3VSP|N4SD
R:260407/1413z @:K7EK.#NOKY.KY.USA.NOAM $:10700_N4SD
R:260407/1407Z 51585@N9SEO.#NAR.AR.USA.NOAM LinBPQ6.0.25
R:260407/1407Z 50688@WW6Q.#NEIN.IN.USA.NOAM LinBPQ6.0.25
R:260407/1407Z 56721@W9GM.#SWWI.WI.USA.NOAM BPQ6.0.25
R:260407/1406Z 79777@KA3BVJ.#EPA.PA.USA.NOAM BPQ1.4.65
R:260407/1406Z 65257@N3IP.#SEPA.PA.USA.NOAM BPQK6.0.24
R:260407/1405Z 56703@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260407/1232Z 10700@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 071231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Apr 07 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 Apr 07-Apr 09 2026 is 3.33 (below NOAA
Scale levels).
NOAA Kp index breakdown Apr 07-Apr 09 2026
Apr 07 Apr 08 Apr 09
00-03UT 3.33 3.33 3.33
03-06UT 2.00 3.33 3.00
06-09UT 2.00 1.67 1.67
09-12UT 2.67 1.33 1.00
12-15UT 2.33 2.00 0.67
15-18UT 2.33 2.00 1.33
18-21UT 1.67 1.67 1.33
21-00UT 1.33 2.67 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 Apr 07-Apr 09 2026
Apr 07 Apr 08 Apr 09
S1 or greater 5% 5% 5%
Rationale: There is less than a slight chance for the greater than 10
MeV proton flux to exceed S1 (Minor) solar radiation storm levels 07-09
Apr.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Apr 07-Apr 09 2026
Apr 07 Apr 08 Apr 09
R1-R2 30% 30% 35%
R3 or greater 5% 5% 10%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
with a slight chance for R3 (Strong) or greater events 07-09 Apr.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-East satellite downlink
Return To Bulletin List