[Ips-whfpr] IPS Weekly Prop. Report (23 April 03)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 23/0200Z APRIL 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (16 APRIL - 22 APRIL)
Date   T index   Conditions        
16 Apr   80      Normal            
MUFS:
near predicted monthly values


17 Apr   83      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Enhanced by 25% during local night, with 
      variable local depressions.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Slightly below predicted monthly values
      with variable extended local disturbances.


18 Apr   80      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.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.


19 Apr   74      Normal-fair       
MUFS:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Enhanced by 15% during local night.
   Australian and New Zealand Region:
      Near predicted monthly values to depressed
      15-30% at times during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.


20 Apr   84      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values to depressed
      15-30% at times during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values.


21 Apr  106      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values to depressed
      15-30% at times during local night.
   Northern Australian Region:
      Near predicted monthly values to enhanced.
   Southern Australian and New Zealand Region:
      Near predicted monthly values to enhanced.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values.


22 Apr  105      Normal-fair       
MUFS:
   Equatorial PNG Region:
      Enhanced by 20% during local day,
      Enhanced by 50% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Enhanced by 15% during local day,
      Enhanced by 20% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 25% during local day,
      Near predicted monthly values to
      depressed 15% at times during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values to depressed
      15% at times.


Predicted Monthly T index for April:  77
2. FORECAST (23 APRIL - 29 APRIL) 
MUFS: 
     23-26 April: Depressions of 15-30% possible at times,
		  otherwise mostly near predicted monthly values.
     27-29 April: Mostly near predicted monthly values.
Propagation conditions: 
     23-26 April: Normal to poor at times.
     27-29 April: Mostly normal.
T index:   
     23-26 April: 80
     27-29 April: 100

3. OUTLOOK (30 APRIL - 30 MAY)
Degraded HF propagation conditions possible: 8-18 & 21-26 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