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Monday, October 12, 2015

 

Geomagnetic Disturbance Warning (13 October)

The geomagnetic storms of the 9th were nowhere near as effective as the 7th and 8th, but a few faint aurora were seen by dedicated observers

The Australian IPS has issued a Geomagnetic Disturbance Warning and the NOAA site has a predicted G1 storm from a fast moving solar wind stream from a coronal hole. Unlike the previous coronal holes this is from the suns northern hemisphere and will most likely just graze us, with much less likelihood of an aurora. The arrival of the solar wind stream will be anywhere between the early morning of the 13th Australian time, to the evening of the 13th.

Dark sky sites have the best chance of seeing anything, and always allow around 5 minutes for your eyes to become dark adapted.
As always look to the south for shifting red/green glows, beams have been reported consistently over the last few aurora and a large green "blob" has been seen.

The all sky aurora camera in Northern Tasmania at Cressy may be helpful.
<http://www.ips.gov.au/Geophysical/4/2>

SUBJ: IPS GEOMAGNETIC DISTURBANCE WARNING 15/46
ISSUED AT 2320UT/11 OCTOBER 2015
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

Due to the angle of the leading edge of the coronal hole it is
uncertain when it will be geoeffective, most likely late in the
UT day, 12 October, or tomorrow, 13 October.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED
DUE TO CORONAL HOLE HIGH SPEED WIND STREAM
FROM 12-13 OCTOBER 2015
_____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
12 Oct:  Unsettled to Active
13 Oct:  Active

Further monitoring at
http://www.ips.gov.au

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Comments:
Hi Ian, we are looking forward to this one tonight. Here's hoping.
 
Looks like it hit in daytime, sorry :-(
 
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