[HOT] FW: ALERT: Geomagnetic K-index of 8 (G4)
russdeffner at gmail.com
Tue Mar 17 14:16:23 UTC 2015
Just forwarding this geomagnetic storm alert (see below) – today will not be a good day for GPS surveying.
From: SWPC Product Subscription Service [mailto:SWPC.Products at noaa.gov]
Sent: Tuesday, March 17, 2015 8:07 AM
To: russdeffner at gmail.com
Subject: ALERT: Geomagnetic K-index of 8 (G4)
Space Weather Message Code: ALTK08
Serial Number: 18
Issue Time: 2015 Mar 17 1401 UTC
ALERT: Geomagnetic K-index of 8
Threshold Reached: 2015 Mar 17 1358 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product Subscription Site. <https://pss.swpc.noaa.gov> Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact SWPC Help. <mailto:pss.help at noaa.gov>
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