[ips-sf] IPS Summary Forecast for 17 September - issued 2340UT/16-Sep-2013

[rwc]

There are presently two minor sunspot groups located on the visible
disk. Solar activity has been very low and is expected to remain low
during the next 48 hours. A coronal hole has rotated through the
geoeffective position and a high speed solar wind stream is expected
to arrive at Earth during the next 12-24 hours. This may lead to
unsettled to active geomagnetic conditions during the next 48 hours.
Depending on the orientation of the interplanetary magnetic field,
there is a chance of a minor geomagnetic storm with aurora visible low
on the horizon from Southern Tasmania. High-frequency radio
communications have been depressed at low latitudes and normal or
slightly depressed at mid latitudes. Further depressions are likely,
especially at low latitude stations.

IPS Radio and Space Services        email: asfc at ips.gov.au
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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