[ips-sf] SWS Summary Forecast for 22 March - issued 2333UT/21-Mar-2017 [SEC=UNCLASSIFIED]

[rwc]

Solar activity has been very low today (21 March, UT). The previously
anticipated effect of the recurrent coronal hole started strengthening
the solar wind stream about half a day earlier than expected. The
effect of this coronal hole is expected to keep the solar wind stream
strong for the next three days. Very Low levels of solar activity are
expected for the next 3 days (22 to 24 March) with a slight chance of
C-class activity. The effect of the coronal hole resulted in a rise in
geomagnetic activity up to active levels in Aus/NZ regions and up to
minor storm levels on some high latitude locations today. The effect
of this coronal hole is expected to continue to keep the geomagnetic
activity high up to minor storm levels on 22 and 23 March. Geomagnetic
activity is then expected to gradually decrease to unsettled to active
levels on 24 March. MUFs were mostly near predicted monthly values
today (21 March, UT) with some periods of minor depressions in some
mid and high latitude regions. Minor to moderate MUF depressions and
degradations in HF conditions are expected on 22 and 23 March due to
expected continued rise in geomagnetic activity levels on these days.
Minor to mild depressions in MUFs and degradations in HF conditions
are likely on 24 March.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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