[Ips-wsgr] IPS Weekly Solar and Geophysical Report (30 April 10)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 30 APRIL 2010, 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     75    74    75    76    75    76    76
AFr       7     8     2     0     3     2 (  5)
Aaus      8     5     2     2     3     2 (  5)
T        32    31    20    19    16    13    21

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

23 Apr 
Solar:        Very Low
Geomagnetic:  Quiet to Active 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

24 Apr 
Solar:        Very Low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

25 Apr 
Solar:        Very Low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Variable during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Depressed by 15 to 25%.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

26 Apr 
Solar:        Very Low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Depressed by 15% 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/Davis/Mawson):
      Near predicted monthly values over the UT day.

27 Apr 
Solar:        Very Low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Mostly near predicted monthly values,
   Niue Island Region:
      Near predicted monthly values during local day,
      Depressed by 15% 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/Davis/Mawson):
      Near predicted monthly values over the UT day.

28 Apr 
Solar:        Very Low
Geomagnetic:  Quiet 

Frequencies:  
   Cocos Island Region:
      Mostly near predicted monthly values,
   Niue Island Region:
      Depressed by 25% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Depressed by 15% 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/Davis/Mawson):
      Near predicted monthly values over the UT day.

29 Apr 
Solar:        Very Low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      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/Davis/Mawson):
      Near predicted monthly values over the UT day.

 
2. FORECAST (30 APRIL - 06 MAY)
Solar: Very Low solar activity expected for the forecast 
period, with no active returning regions.  

Geomagnetic: Mostly Quiet to Unsettled conditions with 
possible Active conditions 03May-05May due to recurrent
coronal hole activity.

Frequencies: MUFs expected to be near predicted monthly values.
MUF depressions of 10%-20% possible for Southern AU/NZ regions
from 04May-06May along with disturbed conditions for
Antarctic regions.

For an explanation of some of the terms in this report, go to
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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