[ips-sf] IPS Summary Forecast for 25 December - issued 0022UT/25-Dec-2015 [SEC=UNCLASSIFIED]

[rwc]

Solar activity during the past 24 hours was at moderate levels with a
M1.1 flare and few C-class flares. The outlook for the next 24 hrs is
for C-class flares are likely and isolated chance of stronger M-class
flares. HF users are warned for possible shortwave fadeouts associated
with the flaring. A coronal mass ejection (CME) as observed starting
around 24/0636 UT associated with eruption from Region 2473 (S22E36).
We are currently modelling this events. The solar winds are moderately
elevated and currently near 600 km/s. These solar winds are the
possible effect of a southern hemisphere coronal hole. A favourable
IMF Bz condition may lead to aurora sightings from Tasmania during the
local night of 25 Dec. Stay tuned for update on this. Conditions for
HF radio wave propagation have improved and are now near the predicted
monthly values.

Space Weather Services              email: asfc at ips.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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