[Ips-dhfpr] IPS Daily HF Prop Report - 24 December 07

rwc rwc at ips.gov.au
Tue Dec 25 10:15:29 EST 2007


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 24/2330Z DECEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 DECEMBER) 
Date   T index  Conditions    
24 Dec   -26    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Depressed by 20% over UT day. 
   Northern Australian Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% 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 (25 DECEMBER - 27 DECEMBER)
Date   T index  Conditions       MUFs                              
25 Dec   -32    Normal           10 to 30% below predicted monthly 
                                 values 
26 Dec   -35    Normal           10 to 30% below predicted monthly 
                                 values     
27 Dec   -40    Normal           10 to 30% below predicted monthly 
                                 values    

COMMENT: IPS HF Communications Warning 45 was issued on 23 December 
and is current for interval 24-26 December. Depressions of up 
to 30% were observed at times across the Australian region over 
the past 24 hours, particularly during the local day. Periods 
of Sporadic-E were also observed at some mid to low latitude 
stations over the past 24 hours which may have affected HF propagation 
conditions. Continuing MUF depressions are expected over the 
next few days due to very low levels of solar activity, with 
significant depressions possible at times. 

----------------------------------------------------------
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 mailing list