[Ips-whfpr] IPS Weekly Prop. Report (18 May 05)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 18/0200Z MAY 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (11 MAY - 17 MAY)
Date   T index   Conditions        
11 May   38      Normal            
MUFS:
   Equatorial PNG Region:
     Enhanced by 30% during local day,
     No data available during local night.
     Enhanced by 25% after local dawn.
  Northern Australian Region:
     Near predicted monthly values during local day,
     Depressed by 15% during local night.
  Southern Australian and New Zealand Region:
     Mostly near predicted monthly values,
  Antarctic Region (Casey/Scott Base):
     Enhanced by 35% over the UT day.

12 May   54      Normal            
MUFS:
   Equatorial PNG Region:
     Enhanced by 25% during local day,
     No data available during local night.
  Northern Australian Region:
     Near predicted monthly values.
  Southern Australian and New Zealand Region:
     Enhanced by 15% during local day,
     Enhanced by 20% during local night.
  Antarctic Region (Casey/Scott Base):
     Enhanced by 35% over the UT day.

13 May   62      Fair              
MUFS:
   Equatorial PNG Region:
     Enhanced by 25% during local day,
     Enhanced by 30% during local night.
  Northern Australian Region:
     Enhanced by 35% during local day,
     Near predicted monthly values during local night.
  Southern Australian and New Zealand Region:
     Enhanced by 20% during local day,
     Enhanced by 20% during local night.
     Enhanced by 20% after local dawn.
  Antarctic Region (Casey/Scott Base):
     Near predicted monthly values over the UT day.

14 May   50      Normal            
MUFS:
   Equatorial PNG Region:
     Enhanced by 40% during local day,
     No data available during local night.
     Enhanced by 25% after local dawn.
  Northern Australian Region:
     Enhanced by 15% during local day,
     Depressed by 15% during local night.
     Enhanced by 20% after local dawn.
  Southern Australian and New Zealand Region:
     Enhanced by 15% during local day,
     Near predicted monthly values during local night.
  Antarctic Region (Casey/Scott Base):
     Proton event in progress, increased absorption observed.

15 May   51      Fair              
MUFS:
   Equatorial PNG Region:
      Enhanced by 25% during local day,
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 35% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 55% over the UT day.

16 May   46      Fair-normal       
MUFS:
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 65% during local night.
   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.

17 May   54      Normal            
MUFS:
   Equatorial PNG Region:
      Enhanced by 35% during local day,
      Enhanced by 40% during local night.
   Northern Australian Region:
      Enhanced by 40% during local day,
      Enhanced by 55% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Depressed by 25% over the UT day.

Predicted Monthly T index for May:  27
2. FORECAST (18 MAY - 24 MAY) 
MUFS: mildly depressed after local dawn on 19-May, otherwise MUFs near normal. 
Propagation conditions: Fair 19-May , otherwise normal. No SWFs
T index:   35
COMMENT: IPS HF Communications Warning 22 was issued on 17 May and is current 
for interval  19 May only. 
3. OUTLOOK (25 MAY - 24 JUNE)
Degraded HF propagation conditions possible:
(mid to high latituades ie southern Aus/NZ region)
26-May to 29-May,04-06 Jun,11-Jun.

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.

For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.


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 

IMPORTANT: This e-mail, including any attachments, may contain,confidential
or copyright information.  The views expressed in this message are those of
the individual sender, unless specifically stated to be the views of IPS.
If you are not the intended recipient, please contact the sender immediately
and delete all copies of this e-mail and attachments. Occasionally IPS sends 
email promoting IPS products and services to its mailing list customers. 
If you do not wish to receive this promotional material please email 
no-spam at ips.gov.au with the subject header:UNSUBSCRIBE"