[Ips-wsgr] IPS Weekly Solar and Geophysical Report (25 November 05)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 25 NOVEMBER 2005, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (18 NOVEMBER - 24 NOVEMBER)
Date     18    19    20    21    22    23    24
10cm    101   102    96    95    93    90    87
AFr       2     6     5     2     3     7 (  6)
Aaus      6     8    11     6     7     7 (  8)
T        23     6    12    14    26    23     6

Solar:        Solar flare activity
Geomagnetic:  Geomagnetic activity observed for Australian Region.
Frequencies:  Australian Ionospheric F2 critical frequencies

18 Nov 
Solar:        moderate, with an   M1.2 at 0034UT 
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

19 Nov 
Solar:        low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

20 Nov 
Solar:        low
Geomagnetic:  Quiet to Active 

Frequencies:  
   Equatorial PNG Region:
      Mostly near predicted monthly values,
      Variable localised depressions.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

21 Nov 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Equatorial PNG Region:
      Variable localised depressions over the UT day.
   Northern Australian Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

22 Nov 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

23 Nov 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
slightly above predicted monthly values

24 Nov 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
slightly below predicted monthly values

 
2. FORECAST (25 NOVEMBER - 01 DECEMBER)
Solar: 
Low to very low

Geomagnetic:  
Active 30 Nov to 1 Dec predicted by recurrence.
Quiet on other days but possibly varying to 
unsettled if geomagnetic merging with IMF 
continues for extended periods.

Frequencies:  
Briefly depressed after local dawn 30 Nov to 1 Dec
MUFs near predicted monthly values on other days
with possible slight depressions if geomagnetic 
activty remains slightly elevated.

PLEASE NOTE: 
At this time of the solar cycle, space weather conditions
are frequently determined by short timescale events, not
able to be forecasted a week in advance.

For an explanation of some of the terms in this report, goto
http://www.ips.gov.au/1/2/1.

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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