[Ips-dhfpr] IPS Daily HF Prop Report - 18 December 07
rwc at ips.gov.au
Wed Dec 19 10:52:56 EST 2007
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 18/2330Z DECEMBER 2007 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 -16 Normal-fair
Equatorial PNG/Niue Region:
Near predicted monthly values during local day,
Depressed by 15% during local night.
Northern Australian Region:
Mostly near predicted monthly values,
Depressed by 25% after local dawn.
Southern Australian and New Zealand Region:
Depressed up to 30% at times during the local day,
otherwise mostly near predicted monthly values,
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 (19 DECEMBER - 21 DECEMBER)
Date T index Conditions MUFs
19 Dec -15 Normal-fair depressed 10 to 20%/near predicted
20 Dec -15 Normal-fair depressed 10 to 20%/near predicted
21 Dec -15 Normal-fair depressed 10 to 20%/near predicted
COMMENT: IPS HF Communications Warning 42 was issued on 18 December
and is current for interval 19 December only. Mild depressions
were observed at times across the Australian region over the
past 24 hours. Sporadic-E and Spread-F conditions were also observed
at times across the Australian region over the past 24 hours
which may have contributed to degraded HF conditions. Mild depressions
are expected over the next few days due to declining solar activity.
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
IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information. The views expressed in
this message are those of the individual sender, unless
specifically stated to be the views of IPS. If you are not
the intended recipient, please contact the sender immediately
and delete all copies of this e-mail and attachments.
Occasionally IPS sends email promoting IPS products and
services to its mailing list customers. If you do not wish to
receive this promotional material please email
no-spam at ips.gov.au with the subject header:UNSUBSCRIBE"
More information about the ips-dhfpr