[Ips-whfpr] IPS Weekly Prop. Report (28 March 01)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 28/0200Z MARCH 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 MARCH - 27 MARCH)
Date   T index   Conditions        
21 Mar   99      Normal-poor       
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      otherwise enhanced by 20%.
   Northern Australian Region:
      Mostly near predicted monthly values,
      Enhanced by 15% after local dawn.
   Southern Australian and New Zealand Region:
      Mostly depressed by 30% during local night,
      otherwise mostly near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Depressed by 20% over the UT day.


22 Mar  151      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 25% at times.


23 Mar  131      Normal-poor       
MUFS:
   Equatorial PNG Region:
      Mostly near predicted monthly values,
      Enhanced by 30% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.


24 Mar   88      Poor-normal       
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
      Enhanced by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 15-30% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base):
      Depressed 10-20% to near predicted monthly values.


25 Mar  128      Normal            
MUFS:
   Equatorial PNG Region:
      Mostly near predicted monthly values,
      Enhanced by 15% after local dawn.
   Northern Australian Region:
      Mostly near predicted monthly values,
      Enhanced by 15% after local dawn.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Normal to enhanced by 15%.


26 Mar  155      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      otherwise enhanced by 15-20%.
   Northern Australian Region:
      Near predicted monthly values during local day,
      otherwise enhanced by 20-25%.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      otherwise enhanced by 15-30%.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 25% over the UT day.


27 Mar  149      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
      Enhanced by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Enhanced by 15%.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.


Predicted Monthly T index for March: 115
2. FORECAST (28 MARCH - 03 APRIL) 
MUFS:  
	28 March: Possible depressions of 15-3% at times,
		  otherwise mostly near predicted.
	29 March: Depressed 5-15% to near predicted.
	30 March - 3 April: Mostly near predicted.
Propagation conditions: 
	28 March: Poor at times to normal.
	29 March: Fair to normal.
	30 March - 3 April: Mostly normal.
T index:
	28 March: 90
	29 March: 110
	30 March - 3 April: 130

SWF's are likely throughout most of the forecast period.

COMMENT: IPS HF Communications Warning 12 was issued on 25 March
and is current for interval 26-28 March (SWFs). 
3. OUTLOOK (04 APRIL - 04 MAY)
Degraded HF propagation conditions possible: 15-27 April.

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
PO Box 1386                       | WWW: http://www.ips.gov.au/asfc
Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au/users/asfc/ 
tel: +61 2 9213 8010              | fax: +61 2 9213 8060