[ips-sf] SWS Summary Forecast for 16 December - issued 2324UT/15-Dec-2016 [SEC=UNCLASSIFIED]

rwc rwc at ips.gov.au
Fri Dec 16 10:24:52 EST 2016

The visible solar disk is almost spotless except for new minor Active
Region 2618 located in the NW quadrant. The daily sunspot number is
currently about 8, but should start to increase next week. Solar flare
activity was very low during 15 Dec UT and it is expected to remain
very low during the next 3 days. Hydrogen alpha solar telescopes
recorded a prominence eruption in the North West quadrant during 19-20
UT, 15 Dec. Small equatorial coronal hole CH 778 may become
geoeffective today, 16 Dec. The solar wind speed is currently about
380 km/s and may increase briefly under the influence of CH 778.
Geomagnetic conditions are expected to be mostly quiet with the
possibility of unsettled intervals during 16-18 Dec. Conditions for HF
radio wave propagation were depressed throughout the Australian region
during 15 Dec. Depressed conditions are likely to continue in coming

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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