[Ips-whfpr] IPS Weekly Prop. Report (07 May 03)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 07/0200Z MAY 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (30 APRIL - 06 MAY)
Date   T index   Conditions        
30 Apr  101      Normal-fair       
MUFS:
   Equatorial PNG Region:
      Enhanced by 15-20%.
   Northern Australian Region:
      Enhanced by 20-30%.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day.
      Some spread F observed.


01 May   96      Fair-normal       
MUFS:
   Equatorial PNG Region:
      Enhanced by 15-25%.
   Northern Australian Region:
      Enhanced by 15-30%.
   Southern Australian and New Zealand Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day.
      Spread F observed.


02 May   92      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Depressed by 20% during local night.
      Enhanced by 25% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 20% over the UT day.
      Some spread F observed.


03 May   86      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 30% during local day,
      Enhanced by 50% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 20%.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 20% over the UT day.


04 May   82      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 15-30%.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.
      Some spread F observed.


05 May   87      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 15%.
   Northern Australian Region:
      Enhanced by 15-20%.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.
      Spread F observed.


06 May   87      Normal-fair       
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 15% over the UT day.
      Spread F observed.


Predicted Monthly T index for May:  72
2. FORECAST (07 MAY - 13 MAY) 
MUFS: Mildy depressed after local dawn on 07/08-May southern Aus region
only. MUFs then near to 15% above nromal. Further mild depression 
southern region from 11 May. Northern Aus region MUFs expected to
be near to 15% above normal all week.

Propagation conditions: Fair 07-08May, Good 09-10 May, Fair from 11 May. 

T index:   80

3. OUTLOOK (14 MAY - 13 JUNE)
Degraded HF propagation conditions possible:
11 May - 22 May
25 May - 29 May

COMMENT: Broad coronal holes are causing prolonged periods
of mild to moderately degraded HF conditions.


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