[Ips-whfpr] IPS Weekly Prop. Report (04 April 07)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 04/0200Z APRIL 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (28 MARCH - 03 APRIL)
Date   T index   Conditions        
28 Mar   15      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
      Depressed by 20% after local dawn.
   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.

29 Mar   12      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      No data available during local day,
      Depressed by 15% during local night.
      Depressed by 25% after local dawn.
   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.

30 Mar   22      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted values, 
      Localised depressions after dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted values,
      Occasional localised degradations.

31 Mar   24      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 15%.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

01 Apr   26      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      No data available during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Enhanced 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.

02 Apr   16      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

03 Apr   -4      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Enhanced by 15% during local day,
      No data available during local night.
   Northern Australian Region:
      No data available during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Depressed by 30% during local day,
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for April:   9
2. FORECAST (04 APRIL - 10 APRIL) 
MUFS: Depressions ranging from 10-20% for 04Apr-05Apr
and 09Apr-10Apr. MUFs near predicted monthly values
on other days.

Propagation conditions: Normal-Fair for 04Apr-05Apr,
09Apr-10Apr with otherwise normal conditions. No SWFs
expected with very low solar activity.

T index:  0

COMMENT: IPS HF Communications Warning 11 was issued
on 4 April and is current for interval 4 April only. 
3. OUTLOOK (11 APRIL - 11 MAY)
Degraded HF propagation conditions possible:
29-Apr,06-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
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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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