[Ips-dhfpr] IPS Daily HF Prop Report - 05 December 03
rwc at ips.gov.au
Sat Dec 6 10:24:45 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 05/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (05 DECEMBER)
Date T index Conditions
05 Dec 108 Normal-fair
Equatorial PNG Region:
Near predicted monthly values during local day,
Enhanced by 25% during local night.
Northern Australian Region:
Enhanced by 15% during local day,
Enhanced by 55% during local night.
Southern Australian and New Zealand Region:
Enhanced by 25% during local day,
Enhanced by 20% during local night.
Depressed by 25% after local dawn.
Antarctic Region (Casey/Scott Base):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for December: 50
2. FORECAST (06 DECEMBER - 08 DECEMBER)
Date T index Conditions MUFs
06 Dec 35 Normal-Fair depressed 15 to 20%/near predicted
07 Dec 40 Fair depressed 15 to 20%/near predicted
08 Dec 40 Fair depressed 15 to 20%/near predicted
COMMENT: IPS HF Communications Warning 93 was issued on 3 December
and is current for interval 7-9 December. Unexpected geomagnetic
activity overnight, possibly related to earlier than expected
entry into coronal hole wind stream. Depressed MUFs observed after
local dawn, southern Aus region only. An extended period of 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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