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Saturday, August 19, 2017

 

Aurora Occuring NOW! and updated Geomagnetic warning (19-20 August)

Aurora are visible NOW! They have been seen in Bruny Island, Abels Bay, Derwent River and Tinderbox Tasmania. The activity is dying off now but may pick up again. Current Solar wind parameters are not fantastic Velocity: 718 km/sec Bz: 4.0 nT Density = 11.0 p/cc but glows still being reported wit a Kindex in Hobart of 4. The SWS has issued an updated geomagnetic warning  for 19-290 August (UT) due to ongoing activity t from a coronal hole's high speed windstream.  The Moon is waning, and is setting around 5am in the early morning so will hardly interfere with morning aurora. Be patient, as the activity may rise and fall as the magnetic polarity of the wind may fluctuate significantly.

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, as well as bright proton arcs and "picket fences".

Here is the near-real time satellite view of the clouds http://satview.bom.gov.au/
Cloud cover predictions can be found at SkippySky.  

A new aurora camera is being installed at Campania, Tasmania. A live feed of the images from this camera is  sill not available.

SUBJ: SWS GEOMAGNETIC DISTURBANCE WARNING 17/39
ISSUED AT 0127UT/19 AUGUST 2017
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED
DUE TO CORONAL HOLE HIGH SPEED WIND STREAM
FROM 19-20 AUGUST 2017
_____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
19 Aug:  Active
20 Aug:  Unsettled to Active

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