[Ips-whfpr] IPS Weekly Prop. Report (28 July 10)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 28/0200Z JULY 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 JULY - 27 JULY)
Date   T index   Conditions        
21 Jul   29      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 25% during local day,
      Depressed by 20% during local night.
   Niue Island Region:
      Mostly near predicted monthly values,
   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 during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

22 Jul   28      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly 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):
      Near predicted monthly values over the UT day.

23 Jul   21      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values 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 during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

24 Jul   21      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Depressed by 20% 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 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

25 Jul   32      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
   Niue Island 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 during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

26 Jul   21      Normal            
MUFS:
   Cocos Island Region:
      Depressed by 15% 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.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

27 Jul   27      Normal            
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Niue Island Region:
      Depressed 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 during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for July:  27
2. FORECAST (28 JULY - 03 AUGUST) 
MUFS: MUF depressions of 10%-20% possible for the forecast week
due to increased geomagnetic activity (28Jul-30Jul) as
well as possible reduced EUV ionisation/low sunspot activity
in the latter half of this forecast period.

Propagation conditions: Mostly Normal conditions with possible
disturbed periods for for mid to high latitudes due to geomagnetic 
activity. No SWFs expected.

T index:  27

3. OUTLOOK (04 AUGUST - 03 SEPTEMBER)
Degraded HF propagation conditions possible:
23-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
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