Hello HOTties,
Just forwarding this geomagnetic storm alert (see below) – today will not be a good day for GPS surveying. Happy Mapping, =Russ From: SWPC Product Subscription Service [mailto:[email protected]] Sent: Tuesday, March 17, 2015 8:07 AM To: [email protected] 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 www.swpc.noaa.gov/noaa-scales-explanation 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:[email protected]>
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