[ips-sf] SWS Summary Forecast for 19 May - issued 2340UT/18-May-2017 [SEC=UNCLASSIFIED]

[rwc]

Solar activity was very low over the last 24 hours. A negative
polarity recurrent coronal hole is expected to keep the solar wind
stream strengthened from 19 May for nearly three to four days. Very
low levels of solar activity with some possibility of isolated C-class
event may be expected for the next three days (19 to 21 May). Mostly
quiet to unsettled levels of geomagnetic activity were observed on 18
May with isolated active periods. Geomagnetic activity is expected to
gradually increase to active levels with some possibility of minor
storm periods on 19 May, active to minor storm levels with some major
storm periods on 20 May, and then gradually decrease to active and
unsettled levels on 21 May. Minor to mild MUF depressions as well as
enhancements were observed today (18 May). MUFs and HF conditions are
expected to stay mostly at normal levels during first half of UT day
19 May. Minor to mild MUF depressions and degradation in HF conditions
during the second half on 19 May, and minor to moderate MUF
depressions and degradations in HF conditions may be expected on 20
and 21 May.

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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