A Forum run by Enthusiasts of MidNite Solar

Rag Chew => Off Topic Discussions => Topic started by: Westbranch on September 12, 2014, 12:41:58 PM

Title: CME advisory from NOAA Sept 12/14
Post by: Westbranch on September 12, 2014, 12:41:58 PM
From the NOAA

Space Weather Message Code: WARK06
Serial Number: 246
Issue Time: 2014 Sep 12 1535 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2014 Sep 12 1545 UTC
Valid To: 2014 Sep 13 0900 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.


We shall see what the impacts to various systems is on Saturday morning
Title: Re: CME advisory from NOAA Sept 12/14
Post by: boB on September 13, 2014, 03:57:19 AM
Dang ! Hemispheric Power was less than 13 GIGAWATTS !   That's nothin' !  (I guess)

Couldn't see the aurora from the pacific northwest, either tonight.

Of course, the radio bands are pretty much dead as far as I can tell.

Stabilizing now it looks like.

http://www.swpc.noaa.gov/ovation/North_New.html

http://www.swpc.noaa.gov/rt_plots/bou_12h.html
Title: Re: CME advisory from NOAA Sept 12/14
Post by: Westbranch on September 13, 2014, 12:00:58 PM
up here at about 52* N we had a poor NL's showing as there was a scattered light overcast.  Rats :'(