Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
856
FXXX10 KWNP 301231
DAYTDF
:Product: 3-Day Forecast
:Issued: 2024 Apr 30 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 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Apr 30-May 02 2024 is 4.00 (below NOAA
Scale levels).
NOAA Kp index breakdown Apr 30-May 02 2024
Apr 30 May 01 May 02
00-03UT 2.00 1.67 3.67
03-06UT 1.67 2.67 4.00
06-09UT 0.67 3.67 3.67
09-12UT 1.00 3.33 3.33
12-15UT 1.67 3.00 3.00
15-18UT 1.67 3.33 2.67
18-21UT 2.67 3.67 3.67
21-00UT 1.67 4.00 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 Apr 30-May 02 2024
Apr 30 May 01 May 02
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
Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Apr 30 2024 0114 UTC.
Radio Blackout Forecast for Apr 30-May 02 2024
Apr 30 May 01 May 02
R1-R2 35% 35% 35%
R3 or greater 5% 5% 5%
Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
all three days. Primarily due to the potential of Region 3654.