K07A 2023-04-23 21:49:31.897

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O:8:”stdClass”:3:{s:2:”id”;s:4:”K07A”;s:6:”issued”;s:23:”2023-04-23 21:49:31.897″;s:7:”message”;s:948:”Space Weather Message Code: ALTK07
Serial Number: 131
Issue Time: 2023 Apr 23 2149 UTC

ALERT: Geomagnetic K-index of 7
Threshold Reached: 2023 Apr 23 2148 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes
NOAA Scale: G3 – Strong

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

Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents – Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft – Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation – Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio – HF (high frequency) radio may be intermittent.
Aurora – Aurora may be seen as low as Pennsylvania to Iowa to Oregon.”;}