Message:23296 In: SPACWX.USA
From: N4SDDate: Sat, 30 May 26 12:31:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <14702_N4SD>
Path: N2MH4|N2MH|K5DAT|K5DAT|WW6Q|W9GM|KA3BVJ|KA3VSP|N4SD
R:260530/1538Z 31796@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260530/1538z @:N2MH.#NNJ.NJ.USA.NOAM [via AREDN Mesh] jnos 2.0p $:14702_N4SD
R:260530/1537Z @:K5DAT.NEWI.WI.USA.NA [ELK Grove Village, IL USA] #:6297 XrLin505c
R:260530/1537Z 39588@K5DAT.#NEWI.WI.USA.NOAM LinBPQ6.0.25
R:260530/1536Z 53712@WW6Q.#NEIN.IN.USA.NOAM LinBPQ6.0.25
R:260530/1536Z 1112@W9GM.#SWWI.WI.USA.NOAM BPQ6.0.25
R:260530/1536Z 82061@KA3BVJ.#EPA.PA.USA.NOAM BPQ1.4.65
R:260530/1533Z 2715@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260530/1231Z 14702@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 301231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 May 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 May 30-Jun 01 2026 is 4.00 (below NOAA
Scale levels).
NOAA Kp index breakdown May 30-Jun 01 2026
May 30 May 31 Jun 01
00-03UT 3.33 3.00 3.00
03-06UT 3.00 2.33 3.00
06-09UT 1.33 2.33 2.67
09-12UT 1.67 1.67 2.00
12-15UT 2.00 3.33 2.67
15-18UT 3.00 2.67 2.00
18-21UT 1.00 4.00 2.67
21-00UT 2.00 3.67 2.67
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 May 30-Jun 01 2026
May 30 May 31 Jun 01
S1 or greater 5% 5% 5%
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 May 30-Jun 01 2026
May 30 May 31 Jun 01
R1-R2 40% 40% 40%
R3 or greater 5% 5% 5%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
over 30 May-01 Jun.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-East satellite downlink
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