[Boatanchors] big sun storm

[WA5CAB--- via Boatanchors]

Here is a bulletin that I received late this morning.

Robert  Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480


From: SWPC Product Subscription Service [mailto:SWPC.Products at noaa.gov]
Sent: March 17, 2015 9:08 AM
To: ncs031 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
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.


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