[Ips-whfpr] IPS Weekly Prop. Report (25 April 07)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 25/0200Z APRIL 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (18 APRIL - 24 APRIL)
Date   T index   Conditions        
18 Apr   10      Normal            
MUFS:
near predicted monthly values

19 Apr   14      Normal            
MUFS:
near predicted monthly values

20 Apr   13      Normal            
MUFS:
near predicted monthly values

21 Apr    9      Normal            
MUFS:
near predicted monthly values

22 Apr   10      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      No data available during local day,
      Depressed by 30% during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

23 Apr   19      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values over UT day.
   Northern Australian Region:
      Depressed by 15% during local day,
      Enhanced  by 15% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

24 Apr   15      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   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 over the UT day.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for April:   9
2. FORECAST (25 APRIL - 01 MAY) 
MUFS: briefly depressed after local dawn on 29 Apr
MUFs near predicted monthly values on other days.
Propagation conditions: Fair 29-Apr , otherwise normal. No SWFs
T index:   15

3. OUTLOOK (02 MAY - 01 JUNE)
Degraded HF propagation conditions possible:
06-May,20-May,25-May to 26-May.

PLEASE NOTE:
At this time of the solar cycle, space weather conditions
are frequently determined by short timescale events, not
able to be forecasted a week in advance.

For an explanation of some of the terms in this report, goto
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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