[Ips-dhfpr] IPS Daily HF Prop Report - 18 December 14 issued 2330 UT on 18 Dec 2014
Regional Warning Centre
rwc at ips.gov.au
Fri Dec 19 10:30:44 EST 2014
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 DECEMBER 2014 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (18 DECEMBER)
Date T index Conditions
18 Dec 135 Normal
Flares Max Fadeout Freq. Sectors
M6.9 2158UT probable lower East Pacific/
North American
MUFs:
Cocos Island Region:
Near predicted monthly values during local day.
Enhanced by 30% during local night.
Enhanced by 30% after local dawn.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 30% 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.
Monthly T index:
Month T index
Nov 113
Dec 87
Jan 87
2. FORECAST (19 DECEMBER - 21 DECEMBER)
Date T index Conditions MUFs
19 Dec 120 Normal Near to 15% above predicted
monthly values
20 Dec 80 Normal-fair Near predicted monthly values/depressed
10 to 20%
21 Dec 80 Normal Near predicted monthly values/depressed
10 to 20%
COMMENT: IPS SWF HF Communications Warning 61 was issued on 17
December and is current for 18-20 Dec. IPS Preliminary HF Communications
Warning 62 was issued on 18 December and is current for 20 Dec
only. MUFs were near predicted to enhanced over the UT day 18
December. Isolated cases of sporadic E were observed in the eastern
Australian regions. Near monthly predicted MUFs to slightly enhanced
values are expected today, 19 December. Expect near predicted
values with periods of depressed conditions on 20-21 December
due to an expected increase in geomagnetic activity.
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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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