[Ips-wsgr] IPS Weekly Solar and Geophysical Report (30 April 04)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 30 APRIL 2004, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (23 APRIL - 29 APRIL)
Date     23    24    25    26    27    28    29
10cm    115   112   107   100    95    90    89
AFr      16     7     7     4     5     8 (  8)
Aaus     13     9    10     4     4     5 (  3)
T        79    72    67    60    54    56    57

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

23 Apr 
Solar:        moderate, with an M1 at 1150UT, and an M1/SF at 2112UT
Geomagnetic:  Quiet to Active 
Frequencies:  
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Enhanced by 30% during local night
      and after local dawn.
   Northern Australian Region:
      Enhanced by 15% during local day,
      Near predicted monthly values during local night.
      Enhanced by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base):
      Mostly enhanced with isolated localised
      disturbances. 

24 Apr 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 
Frequencies:  
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 15% over the UT day.
   Antarctic Region (Casey/Scott Base):
      Mostly enhanced with isolated localised
      disturbances.

25 Apr 
Solar:        moderate, with an M2/1N at 0537UT
Geomagnetic:  Quiet to Unsettled 
Frequencies:  
   Equatorial PNG Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base):
      Mostly enhanced over the UT day with 
      variable localised disturbances.

26 Apr 
Solar:        very low
Geomagnetic:  Quiet 
Frequencies:  
near predicted monthly values

27 Apr 
Solar:        low
Geomagnetic:  Quiet 
Frequencies:  
near predicted monthly values

28 Apr 
Solar:        very low
Geomagnetic:  Quiet to unsettled 
Frequencies:  
   Equatorial PNG Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
   Antarctic Region (Casey/Scott Base):
      Enhanced by 20% over the UT day with periods
      of depressions and degradations.

29 Apr 
Solar:        very low
Geomagnetic:  Quiet to unsettled 
Frequencies:  
   Equatorial PNG Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Periods of 15% enhancements with periods of
      minor to significant degradations and depressions. 
 
2. FORECAST (30 APRIL - 06 MAY)
Solar: Very low to low.

Geomagnetic:  Mostly quiet to unsettled with isolated active 
		intervals possible.

Frequencies:  Minor depressions possible on 30 April and on 
		02, 03, 05 and 06 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.


IPS Radio and Space Services      | email: asfc at ips.gov.au
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