[Ips-whfpr] IPS Weekly Prop. Report (24 June 09)

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 24/0200Z JUNE 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (17 JUNE - 23 JUNE)
Date   T index   Conditions        
17 Jun   -3      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressions of 15-35% at Vanimo. Near predicted
      monthly values at Niue with depressions to 30% 01-05,
      15-17 and 22-23 UT. Night spread F observed at Niue.
   Northern Australian Region:
      Depressions of 15-30% 00-09 UT then near predicted
      monthly values. Night spread F observed at most
      stations.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with enhancements to 45%
      08-20 UT observed at Canberra, Christchurch, Hobart and
      Sydney. Depressions to 30% observed at Norfolk Is.
      15-19 UT. Night spread F observed at Brisbane and
      Norfolk Is.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Depressions to 30% at
      Casey 06-10 UT.

18 Jun   -3      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressions to 40% 00-17 UT then near predicted
      monthly values at Vanimo. Near predicted monthly
      values at Niue apart from depressions to 30% 02-05 UT.
      Night spread F observed at both stations.
   Northern Australian Region:
      Near predicted monthly values with depressions to 30%
      mostly around 00-06, 16-21 UT. Some night spread F
      observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Depressions to 30%
      03-06, 12-15 UT at Brisbane and 11-17 UT at Norfolk
      Is. Night spread F observed at both stations.
      Enhancements to 40% at other stations 08-20 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

19 Jun    4      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 25% during local day,
      Depressed by 40% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 40% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

20 Jun   -3      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 45% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

21 Jun   -2      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 25-35%.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

22 Jun   -7      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

23 Jun   -9      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 25% during local day,
      Depressed by 15% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values 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/Davis/Mawson):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for June:   5
2. FORECAST (24 JUNE - 30 JUNE) 
MUFS: MUF depressions of 10%-20% expected for low-mid
latitudes. Disturbed periods expected for high latitudes
over the forecast period.

Propagation conditions: Mostly normal. No SWFs expected.

T index:   5

3. OUTLOOK (01 JULY - 31 JULY)
Degraded HF propagation conditions possible:
No signficant degraded periods expected.

PLEASE NOTE:
Space weather conditions can frequently be determined by short 
timescale events that cannot be forecast a week in advance,
particularly at solar maximum.

For an explanation of some of the terms in this report, go to
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"