[Ips-wsgr] IPS Weekly Solar and Geophysical Report (20 July 12) issued 0141 UT on 20 Jul 2012

Fri Jul 20 11:41:21 EST 2012

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 20 JULY 2012, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (13 JULY - 19 JULY)
Date     13    14    15    16    17    18    19
10cm    147   148   141   138   128   110   100
AFr       4    11    39    27     9     5 (  5)
Aaus      2    11    34    22     9     2 (  3)
T        69    56    87    23    38    46    44

Solar:        Solar flare activity
Geomagnetic:  Geomagnetic activity observed for Australian region.
Frequencies:  Australian ionospheric F2 critical frequencies

13 Jul 
Solar:        low
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Enhanced by 40% 07-210UT.
      Depressed by 30% 18-22UT. Sporadic-E observed
      19-20UT with depressions to 20%.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed to 30% 11-13, 17UT.
   Northern Australian Region:
      Near predicted monthly values during local day
      with occasional enhancements to 30%.
      Depressed by 30% during local night.
      Spread-F 12-20UT at Townsville. 
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Generally weak ionospheric support over the UT day.

14 Jul 
Solar:        moderate, with an M1.0 at 0459UT
Geomagnetic:  Quiet to Active
Frequencies:  
   Cocos Island Region:
      Variable enhancements/depressions during local day.
      Depressed by 40% during local night.
      Depressed by 25% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
      Sporadic-E 18-20UT at Brisbane. 
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Weak ionospheric support over the UT day.
      Minor absorption observed after 17UT due to 
      elevated proton fluxes.

15 Jul 
Solar:        low
Geomagnetic:  Active to Minor Storm
Frequencies:  
   Cocos Island Region:
      Enhanced by 15-30% during local day.
      Depressed 15% 14-19UT.
   Niue Island Region:
      Depressed by 20% during local day.
      Enhanced by 20% during local night with periods
      of spread-F conditions.
   Northern Australian Region:
      Variable depressions to 15% during local day.
      Variable enhancements to 60% during local night.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values.
      Depressed by 30% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Weak ionospheric support with occasional MUF
      enhancements.

16 Jul 
Solar:        low
Geomagnetic:  Quiet to Minor Storm
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 25% during local day.
      Depressed by 35% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 50% during local day.
      Depressed by 45% during local night.     
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Weak ionospheric support over the UT day.

17 Jul 
Solar:        moderate, with an M1.7 at 1725UT
Geomagnetic:  Quiet to Active
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
     Weak ionospheric support over the UT day.

18 Jul 
Solar:        low
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.      
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 35% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day.
      Depressed by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Weak ionospheric support over the UT day.

19 Jul 
Solar:        high, with an M7.7 at 0605UT
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      No data available during local night.      
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 35% 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):
      Weak ionospheric support over the UT day.

2. FORECAST (20 JULY - 26 JULY)
Solar: 
Low

Geomagnetic:  
Quiet to Unsettled conditions. Chance of Active periods 23-24 July.

Frequencies:  
MUFs near predicted monthly values to 20% depressed.

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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