[ips-sf] IPS Summary Forecast for 22 January - issued 2325UT/21-Jan-2015

rwc rwc at ips.gov.au
Thu Jan 22 10:25:33 EST 2015

An unnamed solar Active Region (AR) is located just beyond the south
east limb of the visible disk and will shortly rotate into view. This
region has already produced five substantial C-class X-ray flares The
largest flare was a C9.9 event peaking at 11:42 UT on Jan 21. The
three day outlook is for substantial C class flares and the
possibility of isolated M class flares. Fast solar wind flows
associated with a coronal hole arrived at Earth on Jan 21. The solar
wind speed increased from about 300 km/s to a maximum of about 550
km/s. The arrival of these faster flows drove active geomagnetic
conditions. The geomagnetic conditions are expected to be unsettled,
possibly active, during Jan 22-23. Conditions for HF radio
communication were slightly depressed throughout the southern part of
the Australian region during Jan 21. They are expected to be depressed

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