[ips-sf] SWS Summary Forecast for 23 August - issued 2335UT/22-Aug-2017 [SEC=UNCLASSIFIED]

[rwc]

Solar activity was low over the last 24 hours. Several B-class and
three C-class flares were observed. Low to moderate solar activity is
expected over the next three days (23 to 25 August) with further
C-class events possible and the chance of M-class activity on all
these days. Due to unexpected enhancements in solar wind parameters
during the first seven hours of the UT day today (22 August),
geomagnetic activity increased to active levels with some short
periods of minor and major storms. Geomagnetic activity may remain
enhanced to active levels on 23 August as the solar wind stream is
still going strong. Geomagnetic activity is expected to show gradual
decline to unsettled levels on 24 and then to quiet levels on 25
August. Maximum usable frequencies were near predicted monthly values
with periods of minor enhancements over the last 24 hours. Nearly
similar conditions are expected for the next 3 days.

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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