Wednesday, May 24, 2017
Geomagnetic warning (26-27 May)
The SWS has issued a geomagnetic warning for 26-27 May (UT) due to glancing blow
from a coronal mass ejection. This is expected to arrive late in the UT day on
the 26th (which is the morning of the 27th Australian time). However, the Space Weather Prediction Service has no prediction of storms at this time, so a wait
and see approach may be needed (see also here).
If these geomagnetic events occur and result in aurora they could be seen from Tasmania and Southern Victoria, weather permitting. The Moon is just off new, so will not interfere. 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 17/27
ISSUED AT 2343UT/23 MAY 2017
BY THE AUSTRALIAN SPACE FORECAST CENTRE.
Partial Halo CME observed using STEREO and LASCO C2 imagery.
INCREASED GEOMAGNETIC ACTIVITY EXPECTED
DUE TO CORONAL MASS EJECTION
FROM 26-27 MAY 2017
_____________________________________________________________
GEOMAGNETIC ACTIVITY FORECAST
26 May: Minor to Major Storm
27 May: Minor Storm
If these geomagnetic events occur and result in aurora they could be seen from Tasmania and Southern Victoria, weather permitting. The Moon is just off new, so will not interfere. 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 17/27
ISSUED AT 2343UT/23 MAY 2017
BY THE AUSTRALIAN SPACE FORECAST CENTRE.
Partial Halo CME observed using STEREO and LASCO C2 imagery.
INCREASED GEOMAGNETIC ACTIVITY EXPECTED
DUE TO CORONAL MASS EJECTION
FROM 26-27 MAY 2017
_____________________________________________________________
GEOMAGNETIC ACTIVITY FORECAST
26 May: Minor to Major Storm
27 May: Minor Storm
Labels: aurora
# posted by Ian Musgrave @ 8:58 pm 
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