[Ips-wsgr] IPS Weekly Solar and Geophysical Report (25 July 08)

[rwc]

SUBJ: IPS WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 25 JULY 2008, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (18 JULY - 24 JULY)
Date     18    19    20    21    22    23    24
10cm     67    66    66    66    66    66    65
AFr       5     1     2     5     9    12 ( 10)
Aaus      4     2     2     4     8    13 (  6)
T         2    -4    -4     5     0     5     4

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

18 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day with
      some periods of minor depressions. 
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values during local day.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Periods of some MUF enhancements and depressions 
      with minor to moderate degradations. 

19 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values with periods of 
      minor to moderate degradations during the local day
      times. 
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Periods of enhancements and minor to significant
      degradations in conditions. 

20 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values. Depressions to
      45% at Vanimo 05-09 UT; no data after 09 UT.Depressions
      to 25% at Niue 01-05 UT. Some night spread F and night
      sporadic E observed at Niue.
   Northern Australian Region:
      Near predicted monthly values with depressions to 25%,
      00, 03-07 UT at Darwin and 01-03 UT at Townsville.
      Night spread F observed.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhancements to 50%
      observed at Christchurch 08-17 UT. Night spread F
      observed at most stations.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% depressed.

21 Jul 
Solar:        very low
Geomagnetic:  Quiet 

Frequencies:  
   Equatorial PNG/Niue 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.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 50% over the UT day.

22 Jul 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Equatorial PNG/Niue 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 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 50% over the UT day.

23 Jul 
Solar:        very low
Geomagnetic:  Quiet to Active 

Frequencies:  
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day,
      Depressed by 20% 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 during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 50% over the UT day.

24 Jul 
Solar:        very low
Geomagnetic:  Quiet to Unsettled 

Frequencies:  
   Equatorial PNG/Niue Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 40% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day.

 
2. FORECAST (25 JULY - 31 JULY)
Solar: Very low solar activity is expected for the 
forecast period. No current active regions or 
returning regions.
 

Geomagnetic: Quiet to unsettled conditions expected.
No recurrent coronal hole activity is expected druing
the forecast period.

Frequencies:  MUFs are expected to be near predicted 
monthly values.

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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