Message 29271 in SPACWX.USA
From: N4SD
Date: Wed, 02 Sep 26 12:31:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <21759_N4SD>
Path: K7EK|K5DAT|WW6Q|W9GM|KA3BVJ|N3IP|KA3VSP|N3MEL|N4SD
R:260902/1506z @:K7EK.#NOKY.KY.USA.NOAM $:21759_N4SD
R:260902/1458Z 51690@K5DAT.#NEWI.WI.USA.NOAM LinBPQ6.0.25
R:260902/1457Z 59089@WW6Q.#NEIN.IN.USA.NOAM LinBPQ6.0.25
R:260902/1456Z 8751@W9GM.#SWWI.WI.USA.NOAM BPQ6.0.24
R:260902/1456Z 86243@KA3BVJ.#EPA.PA.USA.NOAM BPQ1.4.65
R:260902/1456Z 73828@N3IP.#SEPA.PA.USA.NOAM BPQK6.0.24
R:260902/1456Z 7413@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260902/1454Z 25966@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260902/1231Z 21759@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 021231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Sep 02 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 Sep 02-Sep 04 2026 is 2.33 (below NOAA
Scale levels).
NOAA Kp index breakdown Sep 02-Sep 04 2026
Sep 02 Sep 03 Sep 04
00-03UT 0.67 1.67 1.33
03-06UT 1.00 1.67 1.67
06-09UT 2.33 1.33 1.67
09-12UT 1.33 0.33 1.33
12-15UT 0.33 0.67 1.00
15-18UT 1.33 1.33 1.33
18-21UT 1.33 1.33 1.67
21-00UT 1.67 1.33 1.33
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 Sep 02-Sep 04 2026
Sep 02 Sep 03 Sep 04
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 Sep 02-Sep 04 2026
Sep 02 Sep 03 Sep 04
R1-R2 10% 10% 10%
R3 or greater 1% 1% 1%
Rationale: Solar activity will likely reach low levels with isolated to
occasional C-class flare activity, with a slight chance for M-class
flares (R1-R2/Minor-Moderate), through 04 Sep.
------
Received by NOAA Satellite Downlink at N4SD
More Info: N4SD@N4SD.#TIDE.VA.USA.NOAM
← Return to Bulletin List