:Product: Geophysical Alert Message wwv.txt
:Issued: 2025 Apr 17 1205 UTC

# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Please send comments and suggestions to SWPC.Webmaster@noaa.gov
# 3-hourly messages issued this UT day.
#
#                    Geophysical Alert Message
#
#-----------------------------------------------------------------

Solar-terrestrial indices for 16 April follow.
Solar flux 148 and mid-latitude A-index 77.
The mid-latitude K-index at 1200 UTC on 17 April was 2 (10 nT).

Space weather for the past 24 hours has been severe.
Geomagnetic storms reaching the G4 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.
Radio blackouts reaching the R1 level are likely.