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Wednesday, May 03, 2017

 

Geomagnetic warning and Aurora Watch (3-5 May)

The SWS has issued a geomagnetic warning and an aurora watch for 3-5 May due to a glancing blow from a coronal mass ejection. This is expected to arrive late in the UT day on the 3rd (which is the morning of the 4th Australian time). If these geomagnetic events occur and  result in aurora they could be seen from Tasmania and Southern Victoria, weather permitting . The Moon is approaching first quarter, so should not interfere much with evening events, and leave the mornings Moon free.

Be patient, as the activity may rise and fall of 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.  

The all sky aurora camera in Northern Tasmania at Cressy is being upgraded and is not yet online.

SUBJ: SWS GEOMAGNETIC DISTURBANCE WARNING 17/22
ISSUED AT 0455UT/03 MAY 2017
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

A weak, slow moving CME is expected to have a glancing impact
on Earth in the later half of UT day 03 May. There is a small
chance of geomagnetic activity reaching Minor Storm levels at
high latitudes in the later half of the UT day 03 May.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED
DUE TO CORONAL MASS EJECTION
FROM 03-05 MAY 2017
_____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
03 May:  Quiet to Active, with possible isolated Minor Storm later in the UT day
04 May:  Active
05 May:  Unsettled

==============================================================
SUBJ: SWS AURORA WATCH
ISSUED AT 0458 UT ON 03 May 2017 by Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

A weak slow moving coronal mass ejection is expected to have a
glancing impact at Earth within the next 48 hours, possibly resulting
in minor geomagnetic activity. There is a small chance of visible
auroras during local nighttime hours at high latitudes on 03 May and
possibly 04 May. Aurora alerts will follow if significant geomagnetic
activity actually occurs.

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