Solar Flare Warning

Warning remains in effect. Radio flux now up to 123sfu, and southern sunspot groups contain massive umbrae!

:Product: Geophysical Alert Message wwv.txt
:Issued: 2021 Dec 21 0600 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#
#          Geophysical Alert Message
#
Solar-terrestrial indices for 20 December follow.
Solar flux 123 and estimated planetary A-index 16.
The estimated planetary K-index at 0600 UTC on 21 December was 2.

No space weather storms were observed for the past 24 hours.