[Ips-whfpr] IPS Weekly Prop. Report (20 April 11)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 20/0200Z APRIL 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (13 APRIL - 19 APRIL)
Date   T index   Conditions        
13 Apr   62      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by up to 20% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
      Enhanced by 15% after local dawn.
   Northern Australian Region:
      Near predicted monthly values,
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

14 Apr   62      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 30% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Mostly near predicted monthly values,
      Enhanced by 25% after local dawn.
   Northern Australian Region:
      Enhanced by 20% during local day,
      Enhanced by 30% during local night.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

15 Apr   61      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Mostly near predicted monthly values,
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Mostly near predicted monthly values,
      Enhanced by 30% after local dawn.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

16 Apr   58      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Variable conditions during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day.

17 Apr   62      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 30%.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% during local day, 
      Near predicted monthly values at other times.

18 Apr   51      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Niue Island Region:
      Enhanced by 15% 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.

19 Apr   49      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly to Enhanced by 30%.
   Niue Island Region:
      Depressed by 15% from 01-10UT,
      Near predicted monthly values at other times.
   Northern Australian Region:
      Near predicted monthly values.
   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 to Enhanced over the UT day.

Predicted Monthly T index for April:  44
2. FORECAST (20 APRIL - 26 APRIL) 
MUFS: MUFs near predicted monthly values.
Propagation conditions: Normal. No SWFs
T index:  44

3. OUTLOOK (27 APRIL - 27 MAY)
Mildly reduced MUFs possible on:
29 April to 4 May
9-10 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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