[ips-sf] IPS Summary Forecast for 18 May - issued 0059UT/18-May-2013

rwc rwc at ips.gov.au
Sat May 18 10:59:42 EST 2013


Moderate flare activity expected 18-May, with further flare potential
from solar active region 1748, the source of four X-class and one
M-class flare over the last week. Further fadeouts are possible.
High-frequency radio communications are mostly normal in the Aus/NZ
region, and poor at high latitudes due to polar cap absorption
affecting lower frequencies. Two Coronal Mass Ejections (CMEs) are
expected to arrive in the next two days, one today (18-May) and a more
significant one tomorrow (19-May) that may produce Minor Storm
geomagnetic conditions, with isolated Major Storm periods at high
latitudes possible. Aurora sightings possible from high latitude
locations (eg Tasmania) on Sunday night.

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

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