[ips-sf] IPS Summary Forecast for 06 June - issued 2334UT/05-Jun-2013

rwc rwc at ips.gov.au
Thu Jun 6 09:34:25 EST 2013

The solar wind speed dropped to below 500 km/s as the recent influence
of a high speed stream from a coronal hole wanes. A small coronal mass
ejection (CME) is expected to strike the Earth sometime in the next 24
hours, causing some minor fluctuations in the Earth magnetic field.
The ionospheric support for HF radio communications is currently
normal. The mild geomagnetic activity from the CME may cause some
reduction in the maximum useable frequency for HF communication over
the next 48 hours, however these effects are expected to be relatively
mild. An M class X-ray flare was observed with an associated CME
around 08UT on the 6th of June. The edge of this cloud of material is
expected to strike the Earth on the 9th of June UT.

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