Author Topic: ALERT: Geomagnetic K-index of 7 (G3)  (Read 30 times)

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ALERT: Geomagnetic K-index of 7 (G3)
« on: May 14, 2019, 09:02:32 AM »
Space Weather Message Code: ALTK07
Serial Number: 114
Issue Time: 2019 May 14 0901 UTC

ALERT: Geomagnetic K-index of 7
Threshold Reached: 2019 May 14 0859 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong

NOAA Space Weather Scale descriptions can be found at

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.

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Re: ALERT: Geomagnetic K-index of 7 (G3)
« Reply #1 on: May 18, 2019, 12:40:43 AM »
I sure noticed that HF messed up for me for a few days there


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Re: ALERT: Geomagnetic K-index of 7 (G3)
« Reply #2 on: May 20, 2019, 05:40:43 PM »
I was not aware of this, but I did notice the HF bands were even deeper in the toilet than they usually are.