Message:23574 In: SPACWX.USA
From: N4SDDate: Fri, 05 Jun 26 00:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <15133_N4SD>
Path: N2MH4|N2MH|K5DAT|K5DAT|WW6Q|W9GM|KA3BVJ|KA3VSP|N4SD
R:260605/0734Z 31990@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260605/0734z @:N2MH.#NNJ.NJ.USA.NOAM [via AREDN Mesh] jnos 2.0p $:15133_N4SD
R:260605/0732Z @:K5DAT.NEWI.WI.USA.NA [ELK Grove Village, IL USA] #:6484 XrLin505c
R:260605/0732Z 39963@K5DAT.#NEWI.WI.USA.NOAM LinBPQ6.0.25
R:260605/0731Z 53985@WW6Q.#NEIN.IN.USA.NOAM LinBPQ6.0.25
R:260605/0731Z 1553@W9GM.#SWWI.WI.USA.NOAM BPQ6.0.24
R:260605/0731Z 82267@KA3BVJ.#EPA.PA.USA.NOAM BPQ1.4.65
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R:260605/0032Z 15133@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 050031
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Jun 05 0030 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 05-Jun 07 2026 is 6.67 (NOAA Scale
G3).
NOAA Kp index breakdown Jun 05-Jun 07 2026
Jun 05 Jun 06 Jun 07
00-03UT 5.33 (G1) 4.33 3.00
03-06UT 6.67 (G3) 4.00 3.00
06-09UT 5.67 (G2) 4.00 2.00
09-12UT 5.33 (G1) 3.00 2.67
12-15UT 4.33 2.33 2.67
15-18UT 4.67 (G1) 2.67 2.67
18-21UT 5.00 (G1) 3.33 2.00
21-00UT 4.33 3.67 2.67
Rationale: Periods of G1-G3 (Minor-Strong) geomagnetic storming are
likely on 05 Jun, with a chance for G4 (Severe) storm periods, due to
the anticipated arrival of multiple CMEs that left the Sun on 03 Jun.
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 05-Jun 07 2026
Jun 05 Jun 06 Jun 07
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 Jun 05-Jun 07 2026
Jun 05 Jun 06 Jun 07
R1-R2 50% 50% 50%
R3 or greater 10% 10% 10%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
with a slight chance for R3 (Strong) or greater events, over 05-07 Jun.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-East satellite downlink
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