Space Environment Alert
Issued by NWS
WOXX13 KWNP 211649
Space Weather Message Code: ALTK04
Serial Number: 1974
Issue Time: 2017 Apr 21 1642 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2017 Apr 21 1638 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
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.
# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
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