Message:23221 In: SPACWX.USA
From: N4SDDate: Fri, 29 May 26 00:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <14545_N4SD>
Path: N2MH4|N3MEL|KA3VSP|N4SD
R:260529/0512Z 31752@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260529/0511Z 17959@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260529/0451Z 2656@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260529/0032Z 14545@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 290031
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 May 29 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 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for May 29-May 31 2026 is 4.00 (below NOAA
Scale levels).
NOAA Kp index breakdown May 29-May 31 2026
May 29 May 30 May 31
00-03UT 3.33 2.33 3.00
03-06UT 2.67 2.00 2.33
06-09UT 2.33 1.33 2.33
09-12UT 2.33 1.33 1.67
12-15UT 2.00 2.67 3.33
15-18UT 2.33 2.33 2.67
18-21UT 2.67 3.00 4.00
21-00UT 3.67 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 May 29-May 31 2026
May 29 May 30 May 31
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 29-May 31 2026
May 29 May 30 May 31
R1-R2 40% 40% 40%
R3 or greater 5% 5% 5%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
through 31 May.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-East satellite downlink
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