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Thursday, August 29, 2019

 

[Aurora Alert] Geomagnetic Disturbance Warning (31 August- 1 September 2019)

The SWS has issued an geomagnetic alert for warning for 31 August due to the arrival of a corotating interaction region and high-speed solar wind streams associated with the recurrent trans-equatorial coronal hole. Currently geomagnetic conditions are quiet, but may reach minor storm levels late on the evening of the 31st  or early morning on September the 1st. Aurora could be seen in Southern Australia under dark sky conditions. Tasmania sand Southern Victoria should see something if aurora occur.

The Moon is just past new will not interfere with seeing aurora. 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.  
======================================================================
SUBJ: SWS GEOMAGNETIC DISTURBANCE WARNING 19/19
ISSUED AT 2354UT/28 AUGUST 2019
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

In the second half of UT day 31 August, global geomagnetic activity
may reach Active and Minor Storm levels due arrival of corotating
interaction region and high-speed solar wind streams associated
with the recurrent trans-equatorial coronal hole.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED
DUE TO CORONAL HOLE HIGH SPEED WIND STREAM
FOR 31 AUGUST 2019
_____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
31 Aug:  Quiet to Minor Storm
====================================================================
SUBJ: SWS AURORA OUTLOOK
ISSUED AT 0139 UT ON 29 Aug 2019 by Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

Effects of a coronal hole are expected to impact the Earth on 31
August and 1 September, possibly resulting in significant geomagnetic
activity and visible auroras during local nighttime hours from
Tasmania and Coastline of Victoria. Aurora alerts will follow if
significant geomagnetic activity actually occurs.

Visit the SWS Aurora webpage http://www.sws.bom.gov.au/Aurora for current
aurora viewing conditions.

Our Aurora forecasting tool, located at
http://www.sws.bom.gov.au/Aurora/3/1, may help to estimate regions
from where aurora would be visible.

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