[Ips-dhfpr] IPS Daily HF Prop Report - 18 December 02

rwc rwc at ips.gov.au
Thu Dec 19 10:12:47 EST 2002


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 18/2330Z DECEMBER 2002 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   152    Normal         

Flares    Max     Fadeout    Freq.  Sectors
M2.4/1N    0642UT  possible   lower  Mid East/Indian
M1.6/SF 17/2335UT  possible   lower  West Pacific

MUFs:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 35% 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 (19 DECEMBER - 21 DECEMBER)
Date   T index  Conditions       MUFs                              
19 Dec   160    Normal-fair      15 to 20% above predicted monthly 
                                 values 
20 Dec    80    Fair-normal      depressed 10 to 15%/near predicted 
                                 monthly values     
21 Dec    80    Normal           depressed 10 to 15%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 77 was issued on 15 December 
and is current for interval 18-19 December. Isolated shortwave 
fadeout activity expected. The anticpated coronal hole high speed 
wind stream has yet to eventuate. As such depressed MUF forecast 
has been slipped out by one day. 

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 



More information about the ips-dhfpr mailing list