[Ips-wsgr] SWS Weekly Solar and Geophysical Report (20 October 17) issued 0200 UT on 20 Oct 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 20 OCTOBER 2017, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (13 OCTOBER - 19 OCTOBER)
Date     13    14    15    16    17    18    19
10cm     70    69    70    71    70    73    73
AFr      26    26    21     6     4     4  ( 12)
Aaus     21    21    16     4     5     2  ( 11)
T       -11   -15    -7   -21    -9   -10    -5

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

13 Oct 
Solar:        Very low
Geomagnetic:  Quiet to Minor Storm
Frequencies:  
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Depressed by 25% during local day.
      Near predicted monthly values during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

14 Oct 
Solar:        Very low
Geomagnetic:  Quiet to Minor Storm
Frequencies:  
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 35% during local day.
      Depressed by 30% during local night.
   Southern Australian Region:
      Depressed by 25% during local day.
      Depressed by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Disturbed ionospheric support.

15 Oct 
Solar:        Very low
Geomagnetic:  Quiet to Active with one isolated Minor Storm period
Frequencies:  
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Depressed by 15% during local day.
      Enhanced by 40% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Disturbed ionospheric support over the UT day.

16 Oct 
Solar:        Very low
Geomagnetic:  Quiet
Frequencies:  
   Niue Island Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Depressed by 30% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Depressed by 30% 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 Oct 
Solar:        Very low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
  Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   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.

18 Oct 
Solar:        Very low
Geomagnetic:  Quiet
Frequencies:  
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

19 Oct 
Solar:        Very low
Geomagnetic:  Quiet to Active
Frequencies:  
   Niue Island Region:
      Enhanced by 30% 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 Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

 
2. FORECAST (20 OCTOBER - 26 OCTOBER)
Solar: 
Very Low 20-22 October
Low to Moderate 22-26 October

Geomagnetic:  
Active on 24-26 Oct.   Quiet to unsettled on other days.

Frequencies:  
briefly depressed after local dawn on 25 Oct
depressed 15% on 24 Oct
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 bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
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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