Subj : NOAA Geophysical Alert Message To : all From : NOAA WWV poster Date : Sat Apr 21 2018 08:15:38 :Product: Geophysical Alert Message wwv.txt :Issued: 2018 Apr 21 1205 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # Solar-terrestrial indices for 20 April follow. Solar flux 73 and estimated planetary A-index 47. The estimated planetary K-index at 1200 UTC on 21 April was 2. Space weather for the past 24 hours has been minor. Geomagnetic storms reaching the G1 level occurred. Space weather for the next 24 hours is predicted to be minor. Geomagnetic storms reaching the G1 level are likely. * Origin: (1:3634/12) .