[Ips-whfpr] IPS Weekly Prop. Report (15 April 09)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 15/0200Z APRIL 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (08 APRIL - 14 APRIL)
Date   T index   Conditions        
08 Apr    1      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 15-30% during local night.
   Northern Australian Region:
      Depressed by 15-30% 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 35% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

09 Apr    9      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Deperessed 10-20% at times during local day, 
      otherwise mostly near predicted monthly values.
   Northern Australian Region:
      Deperessed 10-20% at times during local day, 
      otherwise mostly near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 35% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

10 Apr    6      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Variable conditions during local night.
   Northern Australian Region:
      Depressed 10-20% at times otherwise mostly near
      predicted monthly values during local day,
      Enhanced by 15% during local night.
   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):
      Depressed 15% to near predicted monthly values.

11 Apr    5      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 20% 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):
      Depressed 15% at times to near predicted
      monthly values.

12 Apr    2      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.

13 Apr    6      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% 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):
      Near predicted monthly values over the UT day.

14 Apr   -5      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 25% during local day,
      Depressed by 20% 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.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for April:   3
2. FORECAST (15 APRIL - 21 APRIL) 
MUFS: MUFs near predicted monthly values.
Propagation conditions: Minor degradations possible on 15, 20 
and 21 April, otherwise mostly normal. 
No SWFs
T index:   2

3. OUTLOOK (22 APRIL - 22 MAY)
Degraded HF propagation conditions possible:
Periods of minor degradations possible on 06 May to 09 May.

PLEASE NOTE:
Space weather conditions can frequently be determined by short 
timescale events that cannot be forecast a week in advance,
particularly at solar maximum.

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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