Status Report

Space Weather Message: ALERT: Geomagnetic K-index of 7

By SpaceRef Editor
March 17, 2015
Filed under , ,

Space Weather Message Code: ALTK07

Serial Number: 90

Issue Time: 2015 Mar 17 1334 UTC


ALERT: Geomagnetic K-index of 7

Threshold Reached: 2015 Mar 17 1330 UTC

Synoptic Period: 1200-1500 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.

SpaceRef staff editor.