The SWS has issued a geomagnetic warning and aurora watch for 7-9 October (UT)
due to ongoing solar wind streams from a coronal hole. This should peak anytime
during the 7th to 8th, with activity extending out to the 9th. The SWS predicts
active conditions with the possibility of outbreaks of minor storms on the 8th.
It is not clear if the solar wind will impact during night time hours, abut it
would pay to be alert from twilight on the 7th.
The Space Weather Prediction Service predicts G1 -G2 storms will occur between 4 am to sunrise on the 8th. However they may arrive earlier or later.
If these geomagnetic
events occur and result in aurora they could be seen from Tasmania, the
coastline of Victoria and the Southwest coast of Western Australia.weather
permitting. The Moon is New and will not significantly interfere with seeing
aurora. Be patient, as the activity may rise and fall of the magnetic polarity
of the wind may fluctuate significantly.
This event is may possibly be
quite good, definitely worth a look as viewing conditions are good (the Full
Moon aurora on August 26 was good for those with clear skies despite the
Moonlight, as was very active despite initial predictions of not much
happening).
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". A double arc, blobs, and curtains were seen in Septembers aurora last
despite the moonlight.
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 still not available.
SUBJ: SWS GEOMAGNETIC
DISTURBANCE WARNING 18/22
ISSUED AT 0417UT/05 OCTOBER 2018
BY THE
AUSTRALIAN SPACE FORECAST CENTRE.
Geomagnetic activity is expected to
increase to active levels
on UT day 7 Oct and to minor storm levels on 8
Oct. There is
a remote chance that for short periods the geomagnetic
activity
may even reach major storm levels during this interval. The
disturbance
is due to the expected arrival of CIR and HSS associated with
a large recurrent positive polarity north polar connected coronal
hole.
The aurora may be visible on the local nights of the 7
and 8 October from
Tasmania, coastline of Victoria and Southwest
coast of Western
Australia.
INCREASED GEOMAGNETIC ACTIVITY EXPECTED
DUE TO CORONAL
HOLE HIGH SPEED WIND STREAM
FROM 07-09 OCTOBER
2018
_____________________________________________________________
GEOMAGNETIC
ACTIVITY FORECAST
07 Oct: Active
08 Oct: Minor Storm
09 Oct:
Active
_____________________________________________________________
SUBJ:
SWS AURORA OUTLOOK
ISSUED AT 0424 UT ON 05 Oct 2018 by Space Weather
Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
A large recurrent
positive polarity north polar connected coronal hole
is rotating into a
geoeffective position that is favourable for
possible auroral activity. The
aurora may be visible on the local
nights of the 7 and 8 October from
Tasmania, coastline of Victoria and
Southwest coast of Western Australia.
Warnings and/or 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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