[Ips-whfpr] IPS Weekly Prop. Report (16 May 01)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 16/0200Z MAY 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (09 MAY - 15 MAY)
Date   T index   Conditions        
09 May  134      Normal-fair       
MUFS:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
      Spread F local night hours.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.
      Spread F and absorption observed.

10 May  125      Fair-normal       
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
      Spread F observed local night.
   Antarctic Region (Casey/Scott Base):
      Depressed by 20% over the UT day.
      Spread F observed local night.

11 May  113      Normal            
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
      Spread F observed local night.
   Antarctic Region (Casey/Scott Base):
      Depressed by 20% over the UT day.
      Spread F observed local night.

12 May  126      Fair              
MUFS:
   Equatorial PNG Region:
     Near predicted monthly values.
  Northern Australian Region:
     Near predicted monthly values during local day,
     Enhanced by 35% during local night.
  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.

13 May   98      Fair-normal       
MUFS:
   Equatorial PNG Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.
      Spread F observed.

14 May  101      Normal-fair       
MUFS:
   Equatorial PNG Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 35% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
      Spread F observed.
   Antarctic Region (Casey/Scott Base):
      Depressed by 20% over the UT day.
      Spread F observed.

15 May   91      Fair-normal       
MUFS:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for May: 117
2. FORECAST (16 MAY - 22 MAY) 
MUFS: Near predicted monthly values. SWFs probable 
due to possible return of active region.
Propagation conditions: Normal, chance of fair 
conditions 17-18 May. 
T index:  120
3. OUTLOOK (23 MAY - 22 JUNE)
Mildly degraded HF propagation conditions possible:
19 May,24-May to 25-May,04-Jun to 06-Jun,08-Jun to 09-Jun,11-Jun,15-Jun to 17-Jun.

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