[Ips-dhfpr] IPS Daily HF Prop Report - 04 December 03
rwc
rwc at ips.gov.au
Fri Dec 5 09:55:40 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 04/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (04 DECEMBER)
Date T index Conditions
04 Dec 94 Normal
Flares: none.
MUFs:
Equatorial PNG Region:
Near predicted monthly values during local day,
Enhanced by 20% during local night.
Northern Australian Region:
Near predicted monthly values during local day,
Enhanced by 40% during local night.
Southern Australian and New Zealand Region:
Enhanced by 20% during local day,
Enhanced by 35% during local night.
Antarctic Region (Casey/Scott Base):
Enhanced by 15% over the UT day.
PCA Event : Began at 1505UT 02/12, Ended at 2135UT 03/12
Predicted Monthly T index for December: 50
2. FORECAST (05 DECEMBER - 07 DECEMBER)
Date T index Conditions MUFs
05 Dec 90 Normal 10 to 15% above predicted monthly
values
06 Dec 70 Normal-Fair Initially enhanced 15% then
becoming depressed 15%
07 Dec 30 Fair near predicted monthly values/depressed
10 to 15%
COMMENT: IPS HF Communications Warning 93 was issued on 3 December
and is current for interval 7-9 December. Depressed MUFs may
be experienced after 06/07 Dec in southern region Aus/NZ region
due to anticpated Earth entry into a coronal hole wind stream.
A period of extended lower than normal MUFs may be experienced
for asouthern Aus/NZ region up to around 15 Dec. Northern Aus
region MUFs expected to remain near to 15% above normal, communicators
within this region should use a Tindex of around 80.
IPS Radio and Space Services | email: asfc at ips.gov.au
PO Box 1386 | WWW: http://www.ips.gov.au
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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