Sunday, December 18, 2016

WATCH: Geomagnetic Storm Category G1

Space Weather Message Code: WATA20 Serial Number: 758 Issue Time: 2016 Dec 18 2053 UTC

WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Dec 19:

None (Below G1) Dec 20: None (Below G1) Dec 21: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude. Induced Currents - Weak power grid fluctuations can occur. Spacecraft - Minor impact on satellite operations possible. Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

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