[ips-sf] SWS Summary Forecast for 20 July - issued 0012UT/20-Jul-2016 [SEC=UNCLASSIFIED]

rwc rwc at ips.gov.au
Wed Jul 20 10:12:04 EST 2016

Solar activity was low during 19 July UT. The largest X-ray flare,
C2.2, was produced by Active Region 2565. Solar activity is expected
to be low during next 3 days with a chance an M-class flare will be
produced. The solar wind speed declined from about 350 km/s to 330
km/s during 19 July. At the end of the day a shock wave was detected
in the solar wind. This shock is probably associated with a CME that
was observed by LASCO instrument on 17 July. Geomagnetic conditions
were quiet during 19 July UT. On 20 July geomagnetic conditions are
expected to reach active to minor storm levels due to a CME and
coronal hole effects. Conditions for HF radio wave propagation are
expected to be mildly depressed to near normal during the next 2

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