Message:23181 In: SPACWX.USA
From: N4SDDate: Thu, 28 May 26 00:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <14465_N4SD>
Path: N2MH4|N3MEL|KA3VSP|N4SD
R:260528/0728Z 31726@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260528/0728Z 17924@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260528/0714Z 2616@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260528/0032Z 14465@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 280031
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 May 28 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 May 28-May 30 2026 is 3.67 (below NOAA
Scale levels).
NOAA Kp index breakdown May 28-May 30 2026
May 28 May 29 May 30
00-03UT 3.00 3.33 2.00
03-06UT 3.67 3.00 2.00
06-09UT 3.00 1.67 1.33
09-12UT 2.33 2.00 1.00
12-15UT 2.00 2.00 1.00
15-18UT 1.67 1.67 1.67
18-21UT 2.67 2.33 2.33
21-00UT 1.67 2.33 (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 28-May 30 2026
May 28 May 29 May 30
R1-R2 40% 40% 40%
R3 or greater 5% 5% 5%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
through 30 May due to the flaring potential of the visible disk and
regions rotating onto the eastern limb.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-Easnce for R1-R2 (Minor-Moderate) radio blackouts
through 30 May due to the flaring potential of the visible disk and
regions rotating onto the eastern limb.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-Easnce for R1-R2 (Minor-Moderate) radio blackouts
through 30 May due to the flaring potential of the visible disk and
regions rotating onto the eastern limb.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-East satellite downlink
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