[Ips-whfpr] IPS Weekly Prop. Report (11 June 08)

rwc rwc at ips.gov.au
Wed Jun 11 12:26:02 EST 2008


SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 11/0200Z JUNE 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (04 JUNE - 10 JUNE)
Date   T index   Conditions        
04 Jun   -4      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Depressions 20-45% at
      Vanimo 02-14 UT. Night spread F observed.
   Northern Australian Region:
      Near predicted monthly values. Depressions to 30% at
      Darwin 02-04 and 19-21 UT. Night spread F observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhanced to 30% 12-18
      UT at Christchurch. Night spread F observed at
      Christchurch, Learmonth and Hobart.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      No data for Casey and Mawson since 05 UT. Near
      predicted monthly values at Scott Base with spread F
      observed throughout the reporting period.

05 Jun   -8      Normal-fair       
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Depressions to 50% at
      Vanimo 02-11 UT and to 30% at Niue 03, 21-22 UT. Night
      spread F observed at Niue.
   Northern Australian Region:
      Near predicted monthly values. Occasional depressions
      to 30%, particularly at Darwin. Night spread F observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Occasional depressions
      to 25% at Canberra, Hobart and Learmonth. Enhancements
      to 30% at Christchurch 11-18 UT. Night spread F
      observed at Christchurch, Hobart and Learmonth.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Depressions to 40%
      at Casey and Mawson 04-08 UT. Spread F observed.

06 Jun   -0      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
   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 during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 25% over the UT day.

07 Jun   10      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Variable conditions 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 50% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 50% over the UT day.

08 Jun    3      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day,
      Near predicted monthly values 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 45% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 45% over the UT day.

09 Jun    5      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day,
      Near predicted monthly values 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 45% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 65% over the UT day.

10 Jun   -3      Normal            
MUFS:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 60% over the UT day.

Predicted Monthly T index for June:   5
2. FORECAST (11 JUNE - 17 JUNE) 
MUFS: Briefly depressed after local dawn on 17 Jun.
MUFs expected to be near predicted monthly values on 
other days.

Propagation conditions: Fair 17-Jun, otherwise normal. 
No SWFs expected.

T index:    5

3. OUTLOOK (18 JUNE - 18 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 

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