===================================== NOAA 3 Day Space Weather Forecast ===================================== The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale G1). The greatest expected 3 hr Kp for Jan 26-Jan 28 2021 is 4 (below NOAA Scale levels). NOAA Kp index breakdown Jan 26-Jan 28 2021 Jan 26 Jan 27 Jan 28 00-03UT 4 2 1 03-06UT 4 3 1 06-09UT 2 2 2 09-12UT 1 2 1 12-15UT 2 2 1 15-18UT 1 1 1 18-21UT 2 1 2 21-00UT 3 2 2 Rationale: No G1 (Minor) or greater geomagnetic storms are expected. Active levels were observed early on 26 Jan due to CH HSS effects. 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 Jan 26-Jan 28 2021 Jan 26 Jan 27 Jan 28 S1 or greater 1% 1% 1% 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 No radio blackouts were observed over the past 24 hours. Radio Blackout Forecast for Jan 26-Jan 28 2021 Jan 26 Jan 27 Jan 28 R1-R2 1% 1% 1% R3 or greater 1% 1% 1% Rationale: No R1 (Minor) or greater radio blackouts are expected. No significant active region flare activity is forecast.