Message:25109 In: SPACWX.USA
From: N4SDDate: Fri, 03 Jul 26 00:32:00 Z
Newsgroups: SPACWX.USA
Subject: Space Weather 3-Day Forecast
Message-ID: <17649_N4SD>
Path: N2MH4|N3MEL|W3ND|N3FUD|KA3VSP|N4SD
R:260703/0340Z 33065@N2MH4.#SENC.NC.USA.NOAM LinBPQ6.0.24
R:260703/0339Z 20334@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260703/0329Z 426@W3ND.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260703/0329Z 437@N3FUD.#EPA.PA.USA.NOAM LinBPQ6.0.25
R:260703/0319Z 4318@KA3VSP.DE.USA.NOAM BPQ6.0.25
R:260703/0032Z 17649@N4SD.#TIDE.VA.USA.NOAM BPQ6.0.24
FXXX10 KWNP 030031
DAYTDF
:Product: 3-Day Forecast
:Issued: 2026 Jul 03 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 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jul 03-Jul 05 2026 is 5.67 (NOAA Scale
G2).
NOAA Kp index breakdown Jul 03-Jul 05 2026
Jul 03 Jul 04 Jul 05
00-03UT 2.33 5.67 (G2) 2.67
03-06UT 2.33 4.67 (G1) 2.33
06-09UT 4.67 (G1) 4.33 2.33
09-12UT 5.67 (G2) 4.33 2.33
12-15UT 5.67 (G2) 3.67 2.33
15-18UT 4.67 (G1) 3.67 2.33
18-21UT 4.67 (G1) 3.33 4.67 (G1)
21-00UT 5.00 (G1) 2.33 5.00 (G1)
Rationale: G1-G2 (Minor-Moderate) geomagnetic storming conditions are
anticipated 03-04 Jul due to a CME that left the Sun on 30 Jun. G1
conditions are also anticipated late on 05 Jul due to a CME that left
the Sun on 01 Jul.
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 Jul 03-Jul 05 2026
Jul 03 Jul 04 Jul 05
S1 or greater 20% 20% 20%
Rationale: There is a slight chance for S1 (Minor) or greater solar
radiation storms through 05 Jul due to the anticipated arrivals of
several CMEs.
C. NOAA Radio Blackout Activity and Forecast
Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Jul 02 2026 0156 UTC.
Radio Blackout Forecast for Jul 03-Jul 05 2026
Jul 03 Jul 04 Jul 05
R1-R2 70% 70% 70%
R3 or greater 20% 20% 20%
Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely, with a
slight chance for R3 (Strong) or greater events, through 05 Jul.
------
73 de Sperry N4SD
N4SD@N4SD.#TIDE.VA.USA.NOAM
Received via NOAA GOES-East satellite downlink
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