[Ips-wsgr] IPS Weekly Solar and Geophysical Report (31 May 13) issued 0359 UT on 31 May 2013

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 31 MAY 2013, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (24 MAY - 30 MAY)
Date     24    25    26    27    28    29    30
10cm    127   121   120   110   105   107   104
AFr      17    25    19     8     8     2 (  2)
Aaus     10    19    10    10     4     1 (  0)
T        80    82    70    69    73    63    67

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

24 May 
Solar:        low
Geomagnetic:  Quiet to Unsettled with Active periods.
Frequencies:  
   Cocos Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Enhanced by 35% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

25 May 
Solar:        low
Geomagnetic:  Unsettled to Active
Frequencies:  
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 45% 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/Davis/Mawson):
      Near predicted monthly values over the UT day.

26 May 
Solar:        low
Geomagnetic:  Quiet to Unsettled
Frequencies:  
   Cocos Island Region:
      Enhanced by 75% during local day.
      Enhanced by 25% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

27 May 
Solar:        low
Geomagnetic:  Quiet to Unsettled with isolated active periods
Frequencies:  
   Cocos Island Region:
      Enhanced by 40% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

28 May 
Solar:        very low
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Enhanced by 45% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% 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:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

29 May 
Solar:        low
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% 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 during local day.
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

30 May 
Solar:        low
Geomagnetic:  Quiet
Frequencies:  
   Cocos Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Mostly 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.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

 
2. FORECAST (31 MAY - 06 JUNE)
Solar: Very Low to Low.

Geomagnetic: Initially Quiet on 31 May with Active to possible
Minor storm periods later in the UT day and into 1 June,
otherwise mostly Quiet to Unsettled.

Frequencies:  Depressed after local dawn on 31 May (UT),
further depressions during 1 June and possibly into 2 June,
otherwise MUFs near predicted monthly values.


For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

IPS Radio and Space Services        email: asfc at ips.gov.au
PO Box 1386                         WWW: http://www.ips.gov.au
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