NOAA STI
:Product: Geophysical Alert Message wwv.txt
:Issued: 2022 Apr 28 0610 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#
# Geophysical Alert Message
#
Solar-terrestrial indices for 27 April follow.
Solar flux 142 and estimated planetary A-index 21.
The estimated planetary K-index at 0600 UTC on 28 April was 3.
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.
NOAA Alerts
Space Weather Message Code: WARK04
Serial Number: 4095
Issue Time: 2022 Apr 28 0528 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4094
Valid From: 2022 Apr 27 1310 UTC
Now Valid Until: 2022 Apr 28 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents – Weak power grid fluctuations can occur.
Aurora – Aurora may be visible at high latitudes such as Canada and Alaska.