[Ips-wsgr] IPS Weekly Solar and Geophysical Report (18 December 15) issued 0141 UT on 18 Dec 2015 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 18 DECEMBER 2015, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (11 DECEMBER - 17 DECEMBER)
Date     11    12    13    14    15    16    17
10cm    114   117   123   124   119   126   118
AFr      14     8     6    15    13     5  (  7)
Aaus     11     6     4    15    11     3  (  7)
T        38    50    68    59    31    66    86

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

11 Dec 
Solar:        Low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Depressed by 25% during local day.
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
      Depressed by 30% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

12 Dec 
Solar:        Low
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 30% during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Depressed by 25% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

13 Dec 
Solar:        Low
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

14 Dec 
Solar:        Low
Geomagnetic:  Quiet to Active
In the IPS magnetometer data for 14 Dec, a weak (19nT) impulse 
was observed at 1322UT and a weak (9nT) impulse was observed 
at 1429UT.
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Niue Island Region:
      Near predicted monthly values.
      Depressed 15% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian 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.

15 Dec 
Solar:        Low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
   Cocos Island Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Depressed by 25% 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.

16 Dec 
Solar:        Low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
   Cocos Island Region:
      Mildly depressed local day, otherwise
      near predicted monthly values.
   Niue Island Region:
      Enhanced 15-20%.
   Northern Australian Region:
      Near predicted monthly values.
      Townsville enhanced 20% around local dawn.
   Southern Australian Region:
      Near predicted monthly values
      to mildly enhanced.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.
      Scott Base no data.

17 Dec 
Solar:        Low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn. 
      Equatorial spread-F observed local night. 
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

 
2. FORECAST (18 DECEMBER - 24 DECEMBER)
Solar: 
Low

Geomagnetic:  
Minor storm on 19 Dec.  Quiet to unsettled on other days.

Frequencies:  
depressed 30% on 19 Dec
MUFs near predicted monthly values on other days.


For an explanation of some of the terms in this report, go to
http://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Space Weather Services              email: asfc at ips.gov.au
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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