[Ips-whfpr] IPS Weekly Prop. Report (21 March 07)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 21/0200Z MARCH 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (14 MARCH - 20 MARCH)
Date   T index   Conditions        
14 Mar    6      Fair              
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 15% throughout the 24 hours.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

15 Mar    3      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
      Niue showed an unusual daytime depression 01-05 UT.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

16 Mar    6      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

17 Mar   14      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

18 Mar    2      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values with 15-40% depressions
      05-15 UT.
   Northern Australian Region:
      Near predicted monthly values with occasional
      depressions to 25%.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with occasional
      depressions to 25%, mostly between 00-06 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. 40% depressed at Casey
      13-14 UT.

19 Mar    5      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 25% during local night.
      Near predicted monthly values during local day.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

20 Mar   10      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values to 15% depressed.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      observed at Darwin 13-16 UT. Spread F observed at
      Darwin 14-17 UT.
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with 25% depressions
      02-06 UT observed at Brisbane and Norfolk Island.
      Spread F observed at Hobart 10-20 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Spread F observed much
      of the night.

Predicted Monthly T index for March:  10
2. FORECAST (21 MARCH - 27 MARCH) 
MUFS: MUFs near predicted monthly values. Depressions likely on
25 and 26 March.
Propagation conditions: Normal to fair. No SWFs. Spread F may
degrade communications, particularly at night at low and higher
latitudes.
T index: 5 (lower on 25/26 March)
3. OUTLOOK (28 MARCH - 27 APRIL)
Degraded HF propagation conditions possible:
08 Apr, 21-22 Apr.

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
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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