[ips-sf] SWS Summary Forecast for 21 July - issued 0003UT/21-Jul-2016 [SEC=UNCLASSIFIED]

[rwc]

Solar activity was low during 20 July UT. Active regions 2565 and 2567
produced several C-class flares. Solar activity is expected to be low
during the next 3 UT days, 21-23 July. There is a chance that AR 2565
and AR 2567 will produce an M-class flare. A storm sudden commencement
(SSC) was observed on 19 July at 2355 UT, when an interplanetary shock
wave has arrived at Earth. Geomagnetic activity reached minor storm
levels during 0-3 UT. Then the activity gradually declined to quiet to
unsettled levels. During the next UT day, 21 July, the solar wind is
expected to be enhanced due to a coronal hole effect and the
geomagnetic conditions will be at unsettled levels with possible
active periods. Conditions for HF radio wave propagation are expected
to be mostly normal and mildly depressed during the next 2 days.

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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