[Ips-dhfpr] IPS Daily HF Prop Report - 22 December 02

rwc rwc at ips.gov.au
Mon Dec 23 09:56:31 EST 2002


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 22/2330Z DECEMBER 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 DECEMBER) 
Date   T index  Conditions    
22 Dec   155    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
M1.1/2F    0230UT  possible   lower  E. Asia/Aust.

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Northern Australian Region:
      Enhanced by 20% during local day,
      Enhanced by 35% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 20% during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.


PCA Event : No event.

Predicted Monthly T index for December:  90
2. FORECAST (23 DECEMBER - 25 DECEMBER)
Date   T index  Conditions       MUFs                              
23 Dec   135    Fair             10 to 15% above predicted monthly 
                                 values 
24 Dec   120    Normal           10 to 15% above predicted monthly 
                                 values     
25 Dec   120    Normal           10 to 15% above predicted monthly 
                                 values    
COMMENT: IPS HF Communications Warning 79 was issued on 21 December 
and is current for interval 22-23 December. So far coronal mass 
ejection induced geomagnetic activity has been less than expected. 
Depressed MUFs no longer expected for today, some mild depressions 
may be experienced southern Aus/NZ region. It is possible another 
shock may arrive today yielding degraded conditions late 23/24 
Dec. 

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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