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

rwc rwc at ips.gov.au
Wed Jul 20 12:21:33 EST 2011


SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 20/0200Z JULY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (13 JULY - 19 JULY)
Date   T index   Conditions        
13 Jul   44      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values to up to 30% depressed
      at times. 
   Niue Island Region:
      Depressed by 15% during local day,
      No data available during local night.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% around local afternoon to dusk, 
      Near predicted monthly values at other times.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% over the UT day.

14 Jul   41      Normal            
MUFS:
   Cocos Island Region:
      Depressed by up to 30%.
   Niue Island Region:
      Depressed by 25% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

15 Jul   42      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

16 Jul   45      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values before 08UT,
      Depressed up to 30% at other times.
   Niue Island Region:
      No data available.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 30% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

17 Jul   37      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 20% during local day,
      Depressed by 30% during local night.
   Niue Island Region:
      Depressed by 20% during local day,
      Depressed by 20% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Depressed 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.

18 Jul   42      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      No data available during local night.
      Depressed by 30% after local dawn.
   Niue Island Region:
      Depressed by 25% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 35% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 30% over the UT day.

19 Jul   54      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
      Depressed by 25% after local dawn.
   Niue Island Region:
      No data available during local day,
      No data available during local night.
   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):
      Depressed by 20% over the UT day.

Predicted Monthly T index for July:  56
2. FORECAST (20 JULY - 26 JULY) 
MUFS: MUFs near predicted monthly values to 20% depressed.
Propagation conditions: Normal. No SWFs
T index:  56

3. OUTLOOK (27 JULY - 26 AUGUST)
Degraded HF propagation conditions possible:
25-Aug.

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
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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