[Ips-wsgr] IPS Weekly Solar and Geophysical Report (29 April 05)

rwc rwc at ips.gov.au
Fri Apr 29 10:45:35 EST 2005


SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 29 APRIL 2005, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (22 APRIL - 28 APRIL)
Date     22    23    24    25    26    27    28
10cm     77    79    82    86    91    95    98
AFr       7     5     5     9     2     1    (1)
Aaus      6     6     7     6     2     1    (1)
T        26    43    46    44    34    29    28

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

22 Apr 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Equatorial PNG Region:
     No data available during local day,
     No data available 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.
  Antarctic Region (Casey/Scott Base):
     Near predicted monthly values over the UT day.

23 Apr 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG Region:
     No data available during local day,
     No data available during local night.
  Northern Australian Region:
     Near predicted monthly values.
  Southern Australian and New Zealand Region:
     Near predicted monthly values during local day,
     Enhanced by 15% during local night.
  Antarctic Region (Casey/Scott Base):
     Enhanced by 15% over the UT day.

24 Apr 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Equatorial PNG Region:
     No data available during local day,
     No data available during local night.
  Northern Australian Region:
     Enhanced by 15% during local day,
     Near predicted monthly values during local night.
  Southern Australian and New Zealand Region:
     Enhanced by 15% during local day,
     Enhanced by 15% during local night.
  Antarctic Region (Casey/Scott Base):
     Near predicted monthly values over the UT day.

25 Apr 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Equatorial PNG Region:
     No data available during local day,
     Enhanced by 15% during local night.
  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.
  Antarctic Region (Casey/Scott Base):
     Near predicted monthly values over the UT day.

26 Apr 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      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.

27 Apr 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG Region:
      No data available during local day,
      Enhanced by 35% 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):
      Near predicted monthly values over the UT day.

28 Apr 
Solar:        low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG Region:
      No data available during local day,
      Enhanced by 55% 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.
   Antarctic Region (Casey/Scott Base):
      Enhanced by 20% over the UT day.

 
2. FORECAST (29 APRIL - 05 MAY)
Solar: Low

Geomagnetic:  Unsettled to active levels, with isolated minor storm periods,
are expected 1-2 May.  Otherwise, mostly quiet levels are expected.

Frequencies:  mildly depressed after local dawn on 02-May,  otherwise MUFs near
normal. No SWFs.

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, and follow links to Educational->
Gloassary on Solar Terrestrial Terms.


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