[Ips-dhfpr] IPS Daily HF Prop Report - 19 December 09

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 19/2330Z DECEMBER 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 DECEMBER) 
Date   T index  Conditions    
19 Dec    -5    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values with depressions to 15%
      12, 17 and 18 UT. Spread F 17-21 UT.
   Niue Island Region:
      Near predicted monthly values with depressions to 40%
      00-06, 11-13, 16-18 and 20 UT. Night spread F. Sporadic
      E observed 02, 04-10, 14, 15, 18 UT.
   Northern Australian Region:
      Darwin: near predicted monthly values with depressions
      to 20% 08-18 UT and enhancments to 25% 01-05 UT. Spread
      F 16-20 UT. 
      Townsville: near predicted monthly values with
      depressions to 25% 05 and 19 UT. Enhancments to 40% 02,
      06-08 and 14-15 UT. Sporadic E observed 00 and 15-18 UT
      and some morning spread F.
   Southern Australian and New Zealand Region:
      Brisbane: near predicted monthly values with depressions
      to 15% 01-05 UT and to 30% 15-18 UT. Sporadic E 03-11,
      15-18, 21-23 UT. Some night spread F.
      Norfolk Is.: near predicted monthly values with
      depressions to 40% 03-05 and 15-18 UT. Sporadic E
      observed 00-02 and 16-18, 22, 23 UT. Some night spread F.
      Canberra/Sydney: Near predicted monthly values with
      depressions to 15% 01-04, 06-08 UT. Enhancements to 25%
      00, 19-20 UT. Sporadic E observed at 00-03, 08-12,
      and 14-18 UT. 
      Hobart: near predicted monthly values with depressions to
      15% 00-02, 06-09 UT. Sporadic E observed 00-03 UT.
      Christchurch: near predicted monthly values with
      depressions to 15% 00-07, 21 UT. Some night spread F.
      Sporadic E 02-08, 19-20, 22, 23 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with occasional
      depressions to 20%. Sporadic E observed 00-03 and
      14-19 UT at Macquarie Is. and 00, 09-20 UT at Casey.

PCA Event : No event.

Predicted Monthly T index for December:   1
2. FORECAST (20 DECEMBER - 22 DECEMBER)
Date   T index  Conditions       MUFs                              
20 Dec    -5    Fair-normal      Near predicted monthly values. 
                                 Occasional depressions to 30%. 
21 Dec   -20    Fair-normal      Near predicted monthly values 
                                 to 30% depressed.     
22 Dec   -20    Normal           Near predicted monthly values 
                                 to 30% depressed.    

COMMENT: Summertime sporadic E may affect communications at times. 

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For an explanation of some of the terms in this report, go to
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
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
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