We’ve received 3 messages like this the past 20 minutes.
:Product: Geophysical Alert Message wwv.txt :Issued: 2021 Dec 19 1800 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # # Geophysical Alert Message # Solar-terrestrial indices for 18 December follow. Solar flux 121 and estimated planetary A-index 4. The estimated planetary K-index at 1800 UTC on 19 December was 4. No space weather storms were observed for the past 24 hours. No space weather storms are predicted for the next 24 hours.