[Ips-geo-warning] SWS GEOMAGNETIC WARNING issued 0127 UT on 12 Sep 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS GEOMAGNETIC DISTURBANCE WARNING 17/45
ISSUED AT 0126UT/12 SEPTEMBER 2017
BY THE AUSTRALIAN SPACE FORECAST CENTRE.

A recurrent positive polarity Northern hemisphere coronal hole 
will soon reach geoeffective location on the solar disk. A possible 
corotating interaction region associated with the coronal hole 
is expected to effect earth from late UT day 12 September. On 
the subsequent two days (13 - 14 September) very high solar wind 
streams are expected to emanate from the coronal hole. Active 
conditions may occur at earth provided IMF Bz turned strongly 
southward for a prolonged period. There is some chance that the 
aurora may be visible on the local night of 13 September from 
Southern most regions of Australian.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED 
DUE TO CORONAL HOLE HIGH SPEED WIND STREAM
FROM 12-14 SEPTEMBER 2017
_____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
12 Sep:  Initially Quiet and may reach active levels by end of UT day
13 Sep:  Active
14 Sep:  Active

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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