[Ips-wsgr] SWS Weekly Solar and Geophysical Report (27 September 19) issued 0049 UT on 27 Sep 2019

[rwc]

SUBJ: SWS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 27 SEPTEMBER 2019, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (20 SEPTEMBER - 26 SEPTEMBER)
Date     20    21    22    23    24    25    26
10cm     67    68    68    66    67    68    67
AFr       3     7     2     2    11     3  (  5)
Aaus      1     4     0     1    10     2  (  1)
T        -3    -4     0     3     6    -6    -4

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

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

21 Sep 
Solar:        Very low
Geomagnetic:  Quiet
Frequencies:  
   Niue Island Region:
      Mostly near predicted monthly values.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day.

22 Sep 
Solar:        Very low
Geomagnetic:  Quiet
Frequencies:  
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

23 Sep 
Solar:        Very low
Geomagnetic:  Quiet
Frequencies:  
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

24 Sep 
Solar:        Very low
Geomagnetic:  Quiet to Active
In the SWS magnetometer data for 24 Sep, a weak (8nT) impulse 
was observed at 1311UT and a weak (6nT) impulse was observed 
at 1647UT.
Frequencies:
   Niue Island Region:
      Depressed by 15% during local day.
      Enhanced by 15% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 40% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

25 Sep 
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:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

26 Sep 
Solar:        Very low
Geomagnetic:  Quiet
Frequencies:  
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

 
2. FORECAST (27 SEPTEMBER - 03 OCTOBER)
Solar: 
Very low

Geomagnetic:  
Quiet to minor storm on 27 Sep.
Minor storm on 28 Sep. 
Mostly active on 29 Sep.
Quiet to unsettled on other days.

Frequencies:  
Near to 15% above predicted monthly values on 27 Sep.
Near to 15% below predicted monthly values on 28 Sep.
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
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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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