WATCH: Geomagnetic Storm Category G1 Predicted

Space Weather Message Code: WATA20
Serial Number: 890
Issue Time: 2021 Mar 19 1706 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Mar 20: G1 (Minor) Mar 21: G1 (Minor) Mar 22: G1 (Minor)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Comment: G1 (Minor) Watch issued for likely High speed stream effects originating from a large, negative polarity coronal hole.

NOAA Space Weather Scale descriptions can be found at Scales Explanation
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60° Geomagnetic Latitude.
Induced Currents – Weak power grid fluctuations can occur.
Spacecraft – Minor impact on satellite operations possible.
Aurora – Northern Lights may be visible at High Latitudes (60°+), --->, Stockholm, Oslo, Helsinki.

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