[Ips-dhfpr] IPS Daily HF Prop Report - 29 December 07
rwc at ips.gov.au
Sun Dec 30 10:40:54 EST 2007
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 29/2330Z DECEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (29 DECEMBER)
Date T index Conditions
29 Dec -25 Normal-poor
Equatorial PNG/Niue Region:
Near predicted monthly values during local day,
Depressed by 20% during local night.
Northern Australian Region:
Depressed by 25% during local day,
Depressed by 30% during local night.
Southern Australian and New Zealand Region:
Depressed by 15-30% during local day,
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for December: 5
2. FORECAST (30 DECEMBER - 01 JANUARY)
Date T index Conditions MUFs
30 Dec -25 Normal-poor depressed 15 to 30%/near predicted
31 Dec -25 Normal-poor depressed 15 to 30%/near predicted
01 Jan -25 Normal-poor depressed 15 to 30%/near predicted
COMMENT: IPS HF Communications Warning 47 was issued on 29 December
and is current for interval 30 December to 1 January. MUF depressions
of up to 30% were observed at times across the Australian region
over the past 24 hours. Blanketing Sporadic-E was again observed
at times across the Australian region during the past 24 hours
which may have effected HF propagation conditions. Continuing
MUF depressions are expected at times over the Aus/NZ region
for the next few days due to very low levels of solar activity,
with significant depressions possible at times. Continuing sporadic-E
expected at times for low-mid latitudes.
For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
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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