[Ips-dhfpr] IPS Daily HF Prop Report - 17 May 12 issued 2345 UT on 17 May 2012
rwc
rwc at ips.gov.au
Fri May 18 09:45:09 EST 2012
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 MAY 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (17 MAY)
Date T index Conditions
17 May 88 Normal
Flares Max Fadeout Freq. Sectors
M5.1 0147UT possible lower West Pacific
MUFs:
Cocos Island Region:
Near predicted monthly values during local day.
Depressed by 25% during local night.
Niue Island Region:
Enhanced by 15% during local day.
Near predicted monthly values during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for May: 79
2. FORECAST (18 MAY - 20 MAY)
Date T index Conditions MUFs
18 May 70 Normal-fair About 15% below predicted monthly
values
19 May 70 Normal-fair About 15% below predicted monthly
values
20 May 75 Normal Near predicted monthly values
COMMENT: HF conditions in the Australian region were mostly Normal
over the UT day. Some periods of spread-F were observed at S.Aus
locations overnight, degrading HF conditions there. Possible
disturbed periods next three days, S Aus / NZ / Antarctic regions
most likely to be affected.
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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
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