[Ips-dhfpr] IPS Daily HF Prop Report - 04 December 03

rwc rwc at ips.gov.au
Fri Dec 5 09:55:40 EST 2003


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 04/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 DECEMBER) 
Date   T index  Conditions    
04 Dec    94    Normal         

Flares: none.

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 40% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 20% during local day,
      Enhanced by 35% during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day.


PCA Event : Began at 1505UT 02/12, Ended at 2135UT 03/12
 

Predicted Monthly T index for December:  50
2. FORECAST (05 DECEMBER - 07 DECEMBER)
Date   T index  Conditions       MUFs                              
05 Dec    90    Normal           10 to 15% above predicted monthly 
                                 values 
06 Dec    70    Normal-Fair      Initially enhanced 15% then 
                                 becoming depressed 15%     
07 Dec    30    Fair             near predicted monthly values/depressed 
                                 10 to 15%    
COMMENT: IPS HF Communications Warning 93 was issued on 3 December 
and is current for interval 7-9 December. Depressed MUFs may 
be experienced after 06/07 Dec in southern region Aus/NZ region 
due to anticpated Earth entry into a coronal hole wind stream. 
A period of extended lower than normal MUFs may be experienced 
for asouthern Aus/NZ region up to around 15 Dec. Northern Aus 
region MUFs expected to remain near to 15% above normal, communicators 
within this region should use a Tindex of around 80. 

IPS Radio and Space Services      | email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010              | fax: +61 2 9213 8060 

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