[ips-sf] SWS Summary Forecast for 26 March - issued 2339UT/25-Mar-2017 [SEC=UNCLASSIFIED]

[rwc]

Solar activity has been very low today (25 March, UT). The effect of a
recurrent coronal hole is expected to strengthen the solar wind stream
from late on 27 March. Very Low levels of solar activity are expected
for the next 3 days (26 to 28 March) with a slight chance of C-class
activity. Despite the continued coronal hole effect, geomagnetic
activity stayed at quiet levels on 25 March ((UT). Solar wind speed
still being high (>500 km/s), there is potential for geomagnetic
activity levels to rise to unsettled levels on 26 March, if Bz turns
sufficiently southwards and for sufficiently long intervals of time.
Due to the effect of another recurrent negative polarity coronal hole,
geomagnetic activity is again expected to rise from late hours on 27
March to active levels with a small possibility of some minor storm
periods late on this day. Active to minor storm levels of activity are
expected on 28 March. MUFs were mostly near predicted monthly values
today (25 March, UT) with some periods of minor to mild enhancements
in the equatorial regions. Nearly similar HF conditions are expected
on 26 March. Due to expected rise in geomagnetic activity levels from
late on 27 March, minor to mild MUF depressions and degradations in HF
conditions are possible on this day. Minor to moderate MUF depressions
and degradations in HF conditions are likely on 28 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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