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sci.geo.satellite-nav (Global Satellite Navigation) (sci.geo.satellite-nav) Discussion of global navigation satellite systems (GNSS). Topics include the technical aspects of GNSS operation, user experiences in the use of GNSS, information regarding GNSS products and discussion of GNSS policy (such as GPS selective availability).

Fwd: WARNING: Geomagnetic K-index of 7 or greater expected -- Issue



 
 
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Old June 22nd 15, 06:28 PM posted to sci.geo.satellite-nav
Sam Wormley[_2_]
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Default Fwd: WARNING: Geomagnetic K-index of 7 or greater expected -- Issue



Space Weather Message Code: WARK07
Serial Number: 50
Issue Time: 2015 Jun 22 1813 UTC

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2015 Jun 22 1815 UTC
Valid To: 2015 Jun 22 2200 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater - Strong to Extreme

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/NOAAscales

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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