ALERT: Geomagnetic K-index: 4

Space Weather Message Code: ALTK04
Serial Number: 2157
Issue Time: 2020 Jul 14 0112 UTC

ALERT: Geomagnetic K-index: 4
Threshold Reached: 2020 Jul 14 0111 UTC
Synoptic Period: 0000-0300 UTC

Active Warning: Yes

NOAA Space Weather Scale descriptions can be found at
Scale Description

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” for example in: Sweden, Finland and Norway.