[RVRC] Cross post: ALERT: Geomagnetic K-index of 8 (G4)

[E Drew Moore]

*****************

Begin forwarded message:

From: Martin Minnicino <MMinnicino at phenv.com>
Date: March 17, 2015 at 11:19:10 AM EDT
To: "ETSList at mailman.qth.net" <ETSList at mailman.qth.net>
Subject: [ETS/PARC List] FW: ALERT: Geomagnetic K-index of 8 (G4)

See below.

Put on your aluminum hats…!

Martin Minnicino
WN2SJL

From: SWPC Product Subscription Service [mailto:SWPC.Products at noaa.gov]
Sent: Tuesday, March 17, 2015 10:07 AM
To: Martin Minnicino
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<http://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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