Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
922 FXXX10 KWNP 181231 DAYTDF :Product: 3-Day Forecast :Issued: 2024 Jun 18 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 3 (below NOAA Scale levels). The greatest expected 3 hr Kp for Jun 18-Jun 20 2024 is 4.00 (below NOAA Scale levels). NOAA Kp index breakdown Jun 18-Jun 20 2024 Jun 18 Jun 19 Jun 20 00-03UT 2.00 2.67 1.67 03-06UT 2.67 2.67 2.00 06-09UT 2.67 2.00 1.33 09-12UT 4.00 2.00 1.67 12-15UT 3.67 1.00 1.33 15-18UT 3.00 2.00 1.33 18-21UT 2.33 2.00 0.67 21-00UT 2.67 2.33 1.33 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 Jun 18-Jun 20 2024 Jun 18 Jun 19 Jun 20 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 Jun 18 2024 1123 UTC. Radio Blackout Forecast for Jun 18-Jun 20 2024 Jun 18 Jun 19 Jun 20 R1-R2 55% 55% 55% R3 or greater 10% 10% 10% Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely over 18-20 Jun, with a slight chance for (R3 or greater) radio blackouts, due primarily to the flare potential of Region 3712, Region 3713, and possibly Region 3716.