:Product: Geophysical Alert Message wwv.txt :Issued: 2013 May 23 0610 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # Solar-terrestrial indices for 22 May follow. Solar flux 133 and estimated planetary A-index 12. The estimated planetary K-index at 0600 UTC on 23 May was 3. Space weather for the past 24 hours has been strong. Solar radiation storms reaching the S3 level occurred. Radio blackouts reaching the R2 level occurred. Space weather for the next 24 hours is predicted to be strong. Solar radiation storms reaching the S3 level are expected.