Message 29060 in SPACWX.USA
From: N4SD
Date: Sun, 30 Aug 26 12:31:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <21606_N4SD>
Path: K7EK|K5DAT|WW6Q|W9GM|KA3BVJ|KA3VSP|N3MEL|N4SD
R:260830/1436z @:K7EK.#NOKY.KY.USA.NOAM $:21606_N4SD
R:260830/1434Z 51370@K5DAT.#NEWI.WI.USA.NOAM LinBPQ6.0.25
R:260830/1433Z 58912@WW6Q.#NEIN.IN.USA.NOAM LinBPQ6.0.25
R:260830/1433Z 8495@W9GM.#SWWI.WI.USA.NOAM BPQ6.0.24
R:260830/1433Z 86105@KA3BVJ.#EPA.PA.USA.NOAM BPQ1.4.65
R:260830/1432Z 7241@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260830/1431Z 25684@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260830/1231Z 21606@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 301231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Aug 30 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 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Aug 30-Sep 01 2026 is 3.67 (below NOAA
Scale levels).
NOAA Kp index breakdown Aug 30-Sep 01 2026
Aug 30 Aug 31 Sep 01
00-03UT 3.67 3.00 1.67
03-06UT 3.67 2.67 1.33
06-09UT 3.33 2.00 1.67
09-12UT 3.67 1.67 1.33
12-15UT 2.00 1.67 1.33
15-18UT 2.00 1.00 1.33
18-21UT 2.67 1.00 1.33
21-00UT 3.67 2.00 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 Aug 30-Sep 01 2026
Aug 30 Aug 31 Sep 01
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 Aug 30-Sep 01 2026
Aug 30 Aug 31 Sep 01
R1-R2 15% 15% 10%
R3 or greater 1% 1% 1%
Rationale: There exists a slight chance for R1-R2 (Minor-Moderate) radio
blackouts over 30 Aug - 01 Sep.
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