:Product: 05071230three_day_forecast.txt :Issued: 2014 May 07 1230 UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # A. NOAA Geomagnetic Activity Observation and Forecast The greatest observed 3 hr Kp over the past 24 hours was 1 (below NOAA Scale levels). The greatest expected 3 hr Kp for May 07-May 09 2014 is 3 (below NOAA Scale levels). NOAA Kp index breakdown May 07-May 09 2014 May 07 May 08 May 09 00-03UT 0 2 2 03-06UT 1 3 3 06-09UT 1 2 2 09-12UT 1 2 2 12-15UT 1 2 2 15-18UT 1 2 2 18-21UT 1 2 2 21-00UT 2 2 2 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-13 over the past 24 hours, was below S-scale storm level thresholds. Solar Radiation Storm Forecast for May 07-May 09 2014 May 07 May 08 May 09 S1 or greater 5% 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 Radio blackouts reaching the R1 levels were observed over the past 24 hours. The largest was at May 06 2014 2209 UTC Radio Blackout Forecast for May 07-May 09 2014 May 07 May 08 May 09 R1-R2 40% 25% 25% R3 or greater 10% 1% 1% Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts during May 07-09. There is also a slight chance for R3 (Strong) radio blackout during May 07.