[ips-sf] IPS Summary Forecast for 18 March - issued 2335UT/17-Mar-2013

[rwc]

A strong shock in the solar wind was observed at around 0530UT on the
16th March due to the arrival of a coronal mass ejection (CME). The
enhanced wind speed, density and magnetic field carried in the solar
wind caused a minor to major geomagnetic storm which is ongoing,
although the intensity has dropped to Active levels. Due to this
storm, Aurora were visible from Tasmania after around 9:30pm local
time for several hours. The ionospheric response to this storm has
been strong and conditions for HF radio propagation are poor with
significantly reduced maximum useable frequency.

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