Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
509 FXXX10 KWNP 300031 DAYTDF :Product: 3-Day Forecast :Issued: 2024 Apr 30 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 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 2.33 1.67 3.67 03-06UT 2.67 2.67 4.00 06-09UT 2.00 3.67 3.67 09-12UT 2.00 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 29 2024 0111 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: A chance for R1-2 (Minor-Moderate) radio blackouts due to M-class flare activity will persist through 02 May mainly due to the evolution and recent flare activity exhibited by AR 3654.