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

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 11/0200Z MAY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (04 MAY - 10 MAY)
Date   T index   Conditions        
04 May   56      Normal-fair       
MUFS:
   Cocos Island Region:
      Enhanced by 45% during local day,
      Enhanced by 20% during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Depressed by 25% 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 to depressed by 15%.

05 May   54      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 35% during local day,
      Depressed by 20% during local night.
   Niue Island Region:
      Mostly 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.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

06 May   54      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values with enhancements to 30%
      00, 03-10 UT.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values. Enhancments to 25% 00,
      03-07 UT and depressions to 25% 11-16 UT at Darwin.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with occasional
      enahancements to 25%.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% enahanced.

07 May   52      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values. Depressions to 30%
      13-17 UT.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values. Depressions to 35%
      12-16 UT at Darwin and to 20% 13-16 UT at Townsville.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 30%
      13-20 UT at Hobart and enhancements to 35% 13-23 UT at
      Perth and 19-22 UT at Learmonth.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% enhanced.

08 May   57      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 30% during local day,
      Depressed by 20% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
      Depressed to 25% 11-18UT at Hobart.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

09 May   55      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 25% during local day,
      Near predicted monthly values during local night.
   Niue Island 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.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

10 May   55      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values to enhanced by 45%
      during local day,
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

Predicted Monthly T index for May:  49
2. FORECAST (11 MAY - 17 MAY) 
MUFS: MUFs near predicted monthly values with possible minor 
depressions on 12 May.
Propagation conditions: Normal with possible minor degrations 
on 12 May. No SWFs
T index:  55

3. OUTLOOK (18 MAY - 17 JUNE)
Degraded HF propagation conditions possible:
27-May to 30-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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