[Ips-dhfpr] IPS Daily HF Prop Report - 19 December 03
rwc
rwc at ips.gov.au
Sat Dec 20 10:19:05 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 19/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (19 DECEMBER)
Date T index Conditions
19 Dec 91 Normal
Flares: none.
MUFs:
Equatorial PNG Region:
Near predicted monthly values during local day,
Enhanced by 15% during local night.
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 during local day,
Enhanced by 20% during local night.
Antarctic Region (Casey/Scott Base):
Enhanced by 15% over the UT day.
PCA Event : No event.
Predicted Monthly T index for December: 50
2. FORECAST (20 DECEMBER - 22 DECEMBER)
Date T index Conditions MUFs
20 Dec 60 Normal-Fair 10 to 20% above predicted monthly
values
21 Dec 45 Normal-Fair near predicted monthly values/depressed
5 to 10%
22 Dec 45 Normal near predicted monthly values/depressed
5 to 10%
COMMENT: IPS HF Communications Warning 97 was issued on 15 December
and is current for interval 19-20 December. Generally enhanced
HF propagation conditions observed, especially during local night
hours. Persistent and intense sporadic-E conditions observed
at times in S Aus/NZ regions. Possible degradations may occur
at high latitudes later in the UT day due to anticipated geomagnetic
disturbance from a high speed coronal hole wind stream. Disturbances
will become more widespread later as solar wind parameters intensify.
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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