Space Weather Message Code: ALTK08 Serial Number: 23 Issue Time: 2017 Sep 07 2350 UTC ALERT: Geomagnetic K-index of 8 Threshold Reached: 2017 Sep 07 2350 UTC Synoptic Period: 2100-2400 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 CaliforniaRick WA6NHC
Tiny iPhone keypad & spiel Czech happens
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Posted by: "Rick Bates (WA6NHC)" <wa6nhc@gmail.com>
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