[ips-sf] SWS Summary Forecast for 23 March - issued 2339UT/22-Mar-2017 [SEC=UNCLASSIFIED]

[rwc]

Solar activity has been very low today (22 March, UT). The effect of
the recurrent coronal hole is keeping the solar wind stream strong.
This effect is expected to keep the solar wind stream strong for the
next two to three days. Very Low levels of solar activity are expected
for the next 3 days (23 to 25 March) with a slight chance of C-class
activity. Due to the coronal hole effect, geomagnetic activity rose up
to minor storm levels today. Geomagnetic activity is expected to stay
enhanced up to unsettled to active levels with some possibility of
minor storm periods on 23 March. Geomagnetic activity is then expected
to gradually decrease to unsettled to active levels on 24 March and
then to quiet to unsettled levels on 25 March. MUFs were mostly near
predicted monthly values today (22 March, UT) with some periods of
minor depressions on mid latitudes. Minor MUF enhancements were also
observed at times in some mid latitude regions. Minor to moderate MUF
depressions and degradations in HF conditions are expected on 23 and
24 March. HF conditions are expected to return to mostly normal levels
by 25 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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