[Ips-wsgr] IPS Weekly Solar and Geophysical Report (18 May 12) issued 0151 UT on 18 May 2012

Fri May 18 11:51:29 EST 2012

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 18 MAY 2012, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (11 MAY - 17 MAY)
Date     11    12    13    14    15    16    17
10cm    136   130   131   130   129   131   136
AFr      10     8    10     7     5     8 (  6)
Aaus      8     8     8     2     3     8 (  2)
T        78    74    74    68    67    74    88

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

11 May 
Solar:        low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
   Cocos Island Region:
      Enhanced by 35% during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed 30-50% 07-13UT.
      Depressed 20% 14-16UT.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
      Darwin spread-F observed local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
      Hobart, Christchurch no data. 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% over the UT day.
      Extended periods of weak ionospheric support.

12 May 
Solar:        low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
   Cocos Island Region:
      Enhanced 15% 07, 11-12UT.
      Depressed 30% 14-17UT.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night and after 
      local dawn.
   Northern Australian Region:
      Darwin enhanced 15% 03-05UT. Depressed to 40% 11-17UT.
      Learmonth depressed to 40% 12-15UT. 
      Townsville no data after 02UT.
      Otherwise near predicted monthly.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
      Norfolk Is. no data after 03UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day
      with some periods of disturbance.

13 May 
Solar:        low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed 35% 14-18UT. Enhanced to 25% 10-12UT.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
      Depressed by 20% 21-23UT
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
      Darwin enhanced to 30% 05-10UT. Depressed 40% 12-16UT.
      Brisbane depressed to 30% 07-11UT.
      Townsville no data.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
      Canberra, Sydney depressed 25% 08-10UT.
      Norfolk Is., Hobart no data. 
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      variable conditions with periods of disturbance.

14 May 
Solar:        low
Geomagnetic:  Quiet
Frequencies:  
   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.
      Depressed by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Variable conditions with extended periods of poor
         ionospheric support.

15 May 
Solar:        low
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   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):
      Near predicted monthly values over the UT day.

16 May 
Solar:        low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
   Cocos Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 25%, 07-13UT.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   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):
      Near predicted monthly values over the UT day.

17 May 
Solar:        high, with an M5.1 at 0147UT
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values 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.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

2. FORECAST (18 MAY - 24 MAY)
Solar: 
Low to Moderate.

Geomagnetic:  
Quiet to unsettled conditions. Possible active levels 22-23 May.

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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