[ips-sf] SWS Summary Forecast for 28 September - issued 2350UT/27-Sep-2017 [SEC=UNCLASSIFIED]

[rwc]

Very Low to Low solar flare activity is expected for today, 28
September, with a chance of C-class flares and a slight chance of
M-class flares. Solar wind speeds are very strong due to the arrival
of high speed streams from a positive-polarity polar-connected coronal
hole. Geomagnetic activity is expected to be at Active levels with
isolated periods of Minor Storm levels, particularly at higher
latitudes. High-frequency radio communication users are advised to use
slightly higher than monthly predicted frequencies, but they may
experience minor depressions in mid to high latitudes.

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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