[Ips-dhfpr] IPS Daily HF Prop Report - 21 November 13 issued 2330 UT on 21 Nov 2013
Regional Warning Centre
rwc at ips.gov.au
Fri Nov 22 10:30:26 EST 2013
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 NOVEMBER 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 NOVEMBER)
Date T index Conditions
21 Nov 128 Strongly Enhanced
Flares Max Fadeout Freq. Sectors
M1/-- 1111UT possible lower European
Cocos Island Region:
No data available but probably enhanced.
Niue Island Region:
Enhanced by 5-40% for most of the day.
Northern Australian Region:
Enhanced by 10-35% for most of the day.
Southern Australian and New Zealand Region:
Enhanced by 15-50% for most of the day
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 20-60% for most of the day.
PCA Event : No event.
Monthly T index:
Month T index
2. FORECAST (22 NOVEMBER - 24 NOVEMBER)
Date T index Conditions MUFs
22 Nov 135 Strongly Enhanced Enhanced by 15-40% above predicted
23 Nov 130 Enhanced Enhanced by 15-30% above predicted
24 Nov 130 Enhanced Enhanced by 10-30% above predicted
COMMENT: The ionospheric propagation support was enhanced at
most Australian stations during 21 Nov. The only Australian station
to record persistent near normal propagation conditions was Perth
during the day time. The propagation conditions tended to be
more strongly enhanced for stations located at higher latitudes.
The ionospheric propagation support was especially strong for
Australian Antarctic stations, with many ionosondes recording
persistent foF2 values corresponding to local T indices of approximately
250. The propagation support is expected to remain strongly enhanced,
especially at high latitude stations, but eventually weaken due
to the gradual decline of solar UV flux combined with seasonal
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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