Message:23447 In: SPACWX.USA
From: N4SDDate: Tue, 02 Jun 26 12:31:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <14912_N4SD>
Path: N2MH4|N2MH|N3MEL|KA3VSP|N4SD
R:260602/2028Z 31891@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
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R:260602/1231Z 14912@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 021231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Jun 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 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 02-Jun 04 2026 is 3.67 (below NOAA
Scale levels).
NOAA Kp index breakdown Jun 02-Jun 04 2026
Jun 02 Jun 03 Jun 04
00-03UT 2.33 1.67 3.00
03-06UT 1.67 3.00 2.67
06-09UT 1.67 2.67 2.67
09-12UT 1.33 1.67 3.00
12-15UT 1.33 2.33 2.67
15-18UT 1.33 2.67 3.00
18-21UT 1.67 3.67 2.67
21-00UT 2.67 3.00 3.67
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 Jun 02-Jun 04 2026
Jun 02 Jun 03 Jun 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
Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Jun 02 2026 1005 UTC.
Radio Blackout Forecast for Jun 02-Jun 04 2026
Jun 02 Jun 03 Jun 04
R1-R2 20% 20% 20%
R3 or greater 1% 1% 1%
Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts through 04 Jun.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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