[Ips-dhfpr] IPS Daily HF Prop Report - 30 December 03

rwc rwc at ips.gov.au
Wed Dec 31 10:29:31 EST 2003


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 30/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (30 DECEMBER) 
Date   T index  Conditions    
30 Dec    84    Normal         

Flares: none.

MUFs:
   Equatorial PNG Region:
      Enhanced by 15-20% over the UT day.
   Northern Australian Region:
      Enhanced by 50% during local day,
      Enhanced by 15% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 15-20% over the UT day.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day.


PCA Event : No event.

Predicted Monthly T index for December:  50
2. FORECAST (31 DECEMBER - 02 JANUARY)
Date   T index  Conditions       MUFs                              
31 Dec    75    Normal           5 to 10% above predicted monthly 
                                 values 
01 Jan    50    Normal-fair      Near predicted monthly values     
02 Jan    40    Normal-fair      Near predicted monthly values    
COMMENT: The post-dawn improving trend observed yesterday did 
not continue into the day, and regional MUFs were somewhat less 
than for previous days, but still well above normal monthly values. 
Extended periods of spread-F conditions were observed at high 
latitudes. Isolated periods of intense sporadic-E conditions 
were observed at some mid-latitude stations. Solar wind parameters 
indicate the possible onset of the anticipated coronal hole wind 
stream early today. Expect periods of degradation and disturbance 
mainly at mid to high latitudes for the next few days, possibly 
extending into next week. 

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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