[Ips-wsgr] IPS Weekly Solar and Geophysical Report (27 July 01)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 27 JULY 2001, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (20 JULY - 26 JULY)
Date     20    21    22    23    24    25    26
10cm    143   139   140   143   133   133   123
AFr       8     3     6     8    11    21 ( 15)
Aaus      4     3     5     5     7    18 (  8)
T       108    98   112   102   102   102   113

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

20 Jul 
Solar:        very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 40% 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):
      Enhanced greater than 30%.

21 Jul 
Solar:        very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG Region:
      No data.
   Northern Australian Region:
      Mostly near predicted monthly values
      to depressed by 15-30% at times.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Mostly enhanced greater then 30%.

22 Jul 
Solar:        very low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG Region:
      Minimal data.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base):
      Mostly enhanced greater than 30%.

23 Jul 
Solar:        low
Geomagnetic:  Quiet 
Frequencies:  
   Equatorial PNG Region:
      Minimal data.
   Northern Australian Region:
      Near predicted monthly values to 
      depressed by 15%.
   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 30% over the UT day.


24 Jul 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 
Frequencies:  
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced greater than 30% 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):
      Enhanced by 25% over the UT day.

25 Jul 
Solar:        very low
Geomagnetic:  Quiet to Minor Storm 
Frequencies:  
   Equatorial PNG 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 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.
      Some spread F and absorption observed.

26 Jul 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 
Frequencies:  
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 20% 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.
      Some spread F observed.

COMMENT: Disturbed conditions on 25 July believed associated
with a coronal hole.

2. FORECAST (27 JULY - 02 AUGUST)
Solar: Low

Geomagnetic:  Mostly Quiet to Unsettled with active intervals possible
              01-02 Aug.

Frequencies:  mildy depressed conditions possible after local dawn on 
              01-02 Aug, otherwise MUFs near normal. No SWFs.

PEASE 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.

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