Message:23517 In: SPACWX.USA
From: N4SDDate: Wed, 03 Jun 26 12:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <15002_N4SD>
Path: GB7RJJ|PU2XTC|KF5JRV|K5DAT|WW6Q|W9GM|KA3BVJ|KA3VSP|N4SD
R:260603/2145Z 14493@GB7RJJ.#79.GBR.EURO LinBPQ6.0.25
R:260603/2142Z 10912@PU2XTC.SP.BRA.SOAM LinBPQ6.0.25
R:260603/1508Z 26355@KF5JRV.#NWAR.AR.USA.NA BPQ6.0.24
R:260603/1448Z 39845@K5DAT.#NEWI.WI.USA.NOAM LinBPQ6.0.25
R:260603/1448Z 53899@WW6Q.#NEIN.IN.USA.NOAM LinBPQ6.0.25
R:260603/1447Z 1420@W9GM.#SWWI.WI.USA.NOAM BPQ6.0.24
R:260603/1447Z 82209@KA3BVJ.#EPA.PA.USA.NOAM BPQ1.4.65
R:260603/1439Z 2887@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260603/1232Z 15002@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 031231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Jun 03 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 Jun 03-Jun 05 2026 is 3.67 (below NOAA
Scale levels).
NOAA Kp index breakdown Jun 03-Jun 05 2026
Jun 03 Jun 04 Jun 05
00-03UT 3.00 3.67 3.67
03-06UT 2.33 3.00 2.67
06-09UT 1.67 2.67 2.67
09-12UT 1.00 2.33 2.33
12-15UT 1.67 2.33 2.00
15-18UT 3.00 2.67 2.33
18-21UT 3.33 3.00 3.00
21-00UT 3.33 3.33 2.67
Rationale: No G1 (Minor) or greater geomagnetic storms are expected.
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 Jun 03-Jun 05 2026
Jun 03 Jun 04 Jun 05
S1 or greater 5% 5% 5%
Rationale: No S1 (Minor) or greater solar radiation storms are expected.
C. NOAA Radio Blackout Activity and Forecast
Radio blackouts reaching the R2 levels were observed over the past 24
hours. The largest was at Jun 03 2026 0136 UTC.
Radio Blackout Forecast for Jun 03-Jun 05 2026
Jun 03 Jun 04 Jun 05
R1-R2 55% 55% 55%
R3 or greater 10% 10% 10%
Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely, with a
slight chance for R3 (Strong) or greater events, through 05 June.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-East satellite downlink
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