[Ips-dhfpr] IPS Daily HF Prop Report - 16 May 16 issued 2330 UT on 16 May 2016 [SEC=UNCLASSIFIED]
Regional Warning Centre
rwc at ips.gov.au
Tue May 17 09:30:47 EST 2016
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 MAY 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (16 MAY)
Date T index Conditions
16 May 38 Normal-fair
Flares: C class flares
MUFs:
Cocos Island Region:
Enhanced by 40% during local day.
Enhanced by 40% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Depressed by 25% during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 30% during local night.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 15% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Apr 30
May 47
Jun 46
2. FORECAST (17 MAY - 19 MAY)
Date T index Conditions MUFs
17 May 40 Normal Near predicted monthly values
18 May 40 Normal Near predicted monthly values
19 May 40 Normal Near predicted monthly values
COMMENT: IPS Preliminary HF Communications Warning 24 was issued
on 14 May and is current for 16-17 May. A major geomagnetic storm
(Kp=7) occurred during 8-9 May UT, causing depressed conditions
for HF radio wave propagation. The daily T index decreased to
T=9 on 10 May and has been trending back toward near predicted
monthly values in the Australian region. The preliminary daily
T index was 27 at Darwin and 43 at Sydney during 16 May UT. Conditions
for HF radio wave propagation are expected to be mildly depressed
to near normal throughout the Australian region today, 17 May.
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For an explanation of some of the terms in this report, go to
http://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
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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