===================================== NOAA 3 Day Space Weather 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 Dec 06-Dec 08 2023 is 3.67 (below NOAA Scale levels). NOAA Kp index breakdown Dec 06-Dec 08 2023 Dec 06 Dec 07 Dec 08 00-03UT 3.67 2.00 1.67 03-06UT 3.00 2.33 1.33 06-09UT 3.00 2.33 1.33 09-12UT 2.33 2.00 1.33 12-15UT 2.00 2.00 1.33 15-18UT 2.00 2.00 1.33 18-21UT 2.33 2.00 1.67 21-00UT 3.00 2.00 1.67 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-16 over the past 24 hours, was below S-scale storm level thresholds. Solar Radiation Storm Forecast for Dec 06-Dec 08 2023 Dec 06 Dec 07 Dec 08 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 Dec 05 2023 0644 UTC. Radio Blackout Forecast for Dec 06-Dec 08 2023 Dec 06 Dec 07 Dec 08 R1-R2 40% 40% 40% R3 or greater 10% 10% 10% Rationale: A chance for R1-2 (Minor-Moderate) radio blackouts due to M-class flare activity will persist through 08 Dec.