[Ips-dhfpr] IPS Daily HF Prop Report - 12 April 13 issued 2335 UT on 12 Apr 2013
rwc
rwc at ips.gov.au
Sat Apr 13 09:35:52 EST 2013
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 APRIL 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (12 APRIL)
Date T index Conditions
12 Apr 94 Normal
Flares Max Fadeout Freq. Sectors
M3.3 2038UT possible lower East Pacific/
North American
MUFs:
Cocos Island Region:
Enhanced by 30% during local day.
Enhanced by 45% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 15% over the UT day.
PCA Event : No event.
Predicted Monthly T index for April: 68
2. FORECAST (13 APRIL - 15 APRIL)
Date T index Conditions MUFs
13 Apr 90 Normal Near to 15% above predicted
monthly values
14 Apr 70 Fair-poor Near predicted monthly values
15 Apr 30 Poor-fair 15 to 30% below predicted monthly
values
COMMENT: IPS Preliminary HF Communications Warning 7 was issued
on 12 April and is current for 13-14 Apr. HF conditions were
mostly normal today with minor to moderate MUF enhancements.
Similar conditions are expected for 13-Apr. Minor to significant
MUF depressions and degradations in HF conditions are expected
on 14-15 Apr, especially in mid and Southern Aus/NZ regions,
due to expected enhancements in geomagnetic activity levels during
this period. Chance of sudden ionospheric disturbances (SWFs)
on circuits with daylight sectors.
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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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