Message:24020 In: SPACWX.USA
From: N4SDDate: Wed, 10 Jun 26 12:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <15529_N4SD>
Path: N2MH4|WB4WPF|N3IP|KA3VSP|N4SD
R:260611/2217Z 32275@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260611/2217Z 13875@WB4WPF.#SFL.FL.USA.NOAM LinBPQ6.0.25
R:260611/2216Z 68826@N3IP.#SEPA.PA.USA.NOAM BPQK6.0.24
R:260611/2216Z 3261@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260610/1232Z 15529@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 101231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Jun 10 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 10-Jun 12 2026 is 4.00 (below NOAA
Scale levels).
NOAA Kp index breakdown Jun 10-Jun 12 2026
Jun 10 Jun 11 Jun 12
00-03UT 2.00 2.00 3.67
03-06UT 1.33 2.00 4.00
06-09UT 1.33 3.00 4.00
09-12UT 2.67 2.67 2.33
12-15UT 2.00 3.00 2.00
15-18UT 2.00 3.00 2.67
18-21UT 2.00 3.00 2.00
21-00UT 2.67 2.67 2.33
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 Jun 10-Jun 12 2026
Jun 10 Jun 11 Jun 12
S1 or greater 10% 10% 10%
Rationale: A slight chance of solar radiation storms are expected
through 12 Jun.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Jun 10-Jun 12 2026
Jun 10 Jun 11 Jun 12
R1-R2 55% 55% 55%
R3 or greater 15% 15% 15%
Rationale: Solar activity is likely to be moderate (R1-R2,
Minor-Moderate) with a slight chance for an X-class flares (R3-Strong)
through 12 Jun, mainly due to the flare potential of Regions 4464 and
4465.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
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