[ips-sf] IPS Summary Forecast for 07 May - issued 2342UT/06-May-2015

rwc rwc at ips.gov.au
Thu May 7 09:42:44 EST 2015

Solar flare activity was moderate during 6 May UT. Active Region 2339
produced the largest flare of the day, a M1.9 event peaking at 11:49
UT. AR 2335 was quieter than yesterday but still has the potential to
produce significant flares. H alpha solar telescope observations
recorded the disappearance of a large, unstable solar prominence in
the geoeffective sweet spot west of the solar meridian during 15 UT on
6 May. An update will follow if the SOHO coronograms show an Earthward
directed CME. A solar wind shock arrived at Earth at 00:50 UT due to
the arrival of the CME launched on 2 May. The solar wind speed
increased to more than 500 km/s and and a minor geomagnetic storm (G1)
occurred last night. Geomagnetic conditions are expected to recover
toward quiet levels during 7 May. Conditions for HF radio propagation
are expected to be near predicted monthly values during 7 May.

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