[Ips-whfpr] IPS Weekly Prop. Report (01 August 01)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 01/0200Z AUGUST 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (25 JULY - 31 JULY)
Date   T index   Conditions        
25 Jul  102      Normal-fair       
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.
      Some spread F and absorption observed.

26 Jul  113      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Enhanced by 25% during local night.
   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.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.
      Some spread F observed.

27 Jul  102      Normal            
MUFS:
   Equatorial PNG Region:
     Enhanced by 20% during local day,
     Near predicted monthly values during local night.
  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.
  Antarctic Region (Casey/Scott Base):
     Near predicted monthly values over the UT day.

28 Jul  103      Normal            
MUFS:
   Equatorial PNG Region:
     Enhanced by 20% during local day,
     Enhanced by 40% 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.
  Antarctic Region (Casey/Scott Base):
     Enhanced by 35% over the UT day.

29 Jul   97      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values.
   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):
      Near predicted monthly values over the UT day.
      Some spread F observed.

30 Jul  102      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Enhanced by 15% during local night.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

31 Jul  119      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Northern Australian Region:
      Depressed 15% to near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.
      Absorption and spread observed.

Predicted Monthly T index for July: 115
2. FORECAST (01 AUGUST - 07 AUGUST) 
MUFS: mildy depressed after local dawn on 01-02 Aug,  otherwise MUFs 
near normal. 
Propagation conditions: Fair 01-02 Aug , otherwise normal. No SWFs.
T index:  110
COMMENT: IPS HF Communications Warning 35 was issued on 1 August 
and is current for interval  1-2 August. (Mild depression affecting
southern region Aus/NZ only)
3. OUTLOOK (08 AUGUST - 07 SEPTEMBER)
Degraded HF propagation conditions possible:
08, 12, 21, 23 Aug.

PEASE NOTE:
At this time of the solar cycle, space weather conditions
are frequently determined by short timescale events, not
able to be forecasted a week in advance.

IPS Radio and Space Services      | email: asfc at ips.gov.au
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