[Ips-whfpr] IPS Weekly Prop. Report (21 April 04)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 21/0200Z APRIL 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (14 APRIL - 20 APRIL)
Date   T index   Conditions        
14 Apr   60      Normal            
MUFS:
   Equatorial PNG Region:
      Depressed by 15% during local day,
      Enhanced by 20% 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:
      Mostly near predicted monthly values,
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 20% over the UT day.


15 Apr   67      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 20% during local day,
      No data available during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Enhanced by 20% during local day,
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 25% over the UT day.


16 Apr   74      Normal            
MUFS:
   Equatorial PNG Region:
      No data available during local day,
      No data available during local night.
   Northern Australian Region:
      Enhanced by 20% during local day,
      Enhanced by 20% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 30% during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 20% over the UT day.


17 Apr   47      Normal            
MUFS:
   Equatorial PNG Region:
      No data available during local day,
      No data available during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 20% 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):
      Enhanced by 20% over the UT day.


18 Apr   50      Normal            
MUFS:
near predicted monthly values


19 Apr   62      Normal            
MUFS:
near predicted monthly values


20 Apr   51      Normal            
MUFS:
slightly above predicted monthly values
ld

Predicted Monthly T index for April:  45
2. FORECAST (21 APRIL - 27 APRIL) 
MUFS: MUF's expected to be near normal for April21 and April22. 
Mild depressions may be experienced in the southern Australia 
and New Zealand region from 24April.

Propagation conditions: Normal 21-Apr Normal 22-Apr. Fair 23-27Apr. 

T index:   85
COMMENT: IPS HF Communications Warning 22 was issued on 21 April 
and is current for interval  23-24 April. 
3. OUTLOOK (28 APRIL - 28 MAY)
Degraded HF propagation conditions possible:
03-May to 05-May,20-May to 21-May.

PLEASE 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
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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