[Ips-whfpr] IPS Weekly Prop. Report (14 March 12) issued 0153 UT on 14 Mar 2012

[rwc]

SUBJ: IPS WEEKLY HF PROPAGATION REPORT
ISSUED AT 14/0200Z MARCH 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 MARCH - 13 MARCH)
Date   T index   Conditions        
07 Mar   88      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values.
      Depressed by 25% after local dawn.
      Spread-F observed Hobart.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Poor ionospheric support over the UT day.
      Proton event in progress, increased absorption observed.

08 Mar   60      Normal            
MUFS:
   Cocos Island Region:
      Enhanced 20-30% 01-13UT.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced 20-50% 00-07UT.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Darwin depressed 20-30% 04-11UT.
      Sporadic-E at Townsville 02-07UT.
      Depressed by 15% during local night.
      Depressed by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 20% over the UT day.
      Hobart spread-F 10-20UT.
      Norfolk Is. sporadic-E 04-06UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      No data available over the UT day.
      Proton event in progress, increased absorption 
      to -6dB observed.

09 Mar   76      Fair              
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      No data after 16UT. 
   Northern Australian Region:
      Darwin variable enhancements/depressions local evening.
      Townsville enhanced by 40% 11-18UT. 
      Brisbane enhanced by 20-40% 09-13UT. 
   Southern Australian and New Zealand Region:
      Canberra, Sydney depressed 40-50% 15-23UT.
      Hobart depressed 20-50% with periods of spread-F 08-23UT.
      Regional depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      No data available over the UT day.
      Proton event in progress, increased absorption 
      to -4dB observed.

10 Mar   58      Normal-fair       
MUFS:
   Cocos Island Region:
      Depressed 30% 03-05UT.
      Depressed by 20% during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day.
      Depressed by 15% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Proton event in progress, increased absorption 
      to -3 dB observed.

11 Mar   77      Normal            
MUFS:
   Cocos Island Region:
      Enhanced by 40-60% 08-22UT.
   Niue Island Region:
      Enhanced by 25% during local day.
      Depressed by 20% during local night
      and after local dawn.
   Northern Australian Region:
      Darwin enhanced 40-60% 06-18UT.
      Townsville depressed 20% 09-15UT.
      Learmonth depressed 20-40% 01-06UT, 13-20UT,
      enhanced 30% 09-10UT.
      Other stations depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
      Depressed by 20% after local dawn.
      Periods of strong sporadic-E around local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Ionospheric support intermittent.
      Proton event in progress, increased absorption 
      to -2dB observed.

12 Mar   62      Normal-fair       
MUFS:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Poor Ionospheric support. 

13 Mar   75      Normal-fair       
MUFS:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Enhanced by 35% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
     Proton event in progress, increased absorption 
       observed.

Predicted Monthly T index for March:  81

2. FORECAST (14 MARCH - 20 MARCH) 
MUFS: Near predicted monthly values. Possible depressions to 25% 16-18 March.

Propagation conditions: Normal to Fair. SWFs probable early in week.

T index: 81

3. OUTLOOK (21 MARCH - 20 APRIL)
Degraded HF propagation conditions possible:
12-14 Apr

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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