[Ips-dsgr] IPS Daily Report - 08 April 08

[rwc]

SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 08/2330Z APRIL 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 08 APRIL AND FORECAST FOR 09 APRIL - 11 APRIL
STATUS INDICATORS SOL:GREEN   MAG:GREEN     ION: GREEN
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1A. SOLAR SUMMARY
Activity 08 Apr:  Very low

Flares: None

Observed 10.7 cm flux/Equivalent Sunspot Number for 08 Apr:  70/5

1B. SOLAR FORECAST
             09 Apr             10 Apr             11 Apr
Activity     Very low           Very low           Very low
Fadeouts     None expected      None expected      None expected
10.7cm/SSN    70/5               70/5               70/5

COMMENT: The solar wind speed continues to be elevated due to 
the coronal hole wind stream, ranging between about 610 and 780 
km/s over the last 24 hours. The solar wind speed is expected 
to remain elevated over the next day, slowly decreasing thereafter. 

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2A. MAGNETIC SUMMARY

Geomagnetic field for Australian Region 08 Apr: Mostly quiet to
unsettled. Active to minor storm levels observed at high latitudes. 

Estimated Indices 08 Apr :  A   K           
   Australian Region       8   22133222
      Darwin               7   21123222
      Townsville          10   22233223
      Learmonth           11   21234223
      Camden               7   11133222
      Canberra             8   12133222
      Hobart               7   12133122
      Casey(Ant)          11   3--33222
    
Observed Regional daily pc3 Indices 08 Apr : 
      Darwin               0   (Quiet)
      Townsville           0   (Quiet)
      Learmonth            4   (Quiet)
      Canberra            25   (Quiet to unsettled)
      Hobart              28   (Quiet to unsettled)
Pc3 pulsations are high frequency (10-45 second period) variations 
of the Earths magnetic field. Daily pc3-indices are the daily sum 
of 20 minute pc3-indices for that station and have been shown to be
well correlated with rejection of high resolution aeromagnetic
survey flight-line data. 

NOTE: Indices may have been generated from data obtained in 
cooperation with the following organisations: Geoscience Australia, 
University of Newcastle Space Physics Group, Australian Government 
Antarctic Division and Space Environment Research Center, Japan.

Estimated AFr/Ap Indices 08 Apr : A 
           Fredericksburg         7
           Planetary             10                         

Observed AFr/Ap Indices 07 Apr :  A   K
           Fredericksburg         9
           Planetary             12   3421 1323     

2B. MAGNETIC FORECAST 
Date      Ap    Conditions
09 Apr    10    Quiet to unsettled 
10 Apr     8    Quiet to unsettled 
11 Apr     5    Quiet 

COMMENT: Isolated active levels possible over the next 24 hours. 
Isolated minor storm levels still possible at high latitudes. 

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3A. GLOBAL HF PROPAGATION SUMMARY
	            Latitude Band
Date        Low            Middle         High 
08 Apr      Normal         Normal         Normal-fair    
PCA Event : No event.

3B. GLOBAL HF PROPAGATION FORECAST
	            Latitude Band
Date        Low            Middle         High 
09 Apr      Normal         Normal         Normal-Fair
10 Apr      Normal         Normal         Normal-Fair
11 Apr      Normal         Normal         Normal

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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY

Date   T index
08 Apr    12

Observed Australian Regional MUFs
   Equatorial PNG/Niue Region:
      Near predicted monthly values. Enhancements to 60%
      10-15 UT at Vanimo. Depressions to 30% 00, 05-07 UT at
      Niue.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values. Enhancements to 30% at
      Canberra/Sydney 11-20 UT.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values. Depressions to 30% mostly
      during night hours.

Predicted Monthly T index for April:   6

4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date   T index  MUFs
09 Apr    10    Near predicted monthly values 
10 Apr    10    Near predicted monthly values 
11 Apr    10    Near predicted monthly values 

COMMENT: Spread F was observed at all latitudes during night 
hours. Sporadic E was observed at times at low/mid latitudes. 
Depressions to 30% possible mostly at high latitudes. 

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5. SPACE ENVIRONMENT SUMMARY

GOES satellite data for 07 Apr
       Daily Proton Fluence >1 MeV:   8.0E+06
       Daily Proton Fluence >10 MeV:  1.7E+04
       Daily Electron Fluence >2 MeV: 2.50E+08   (moderate fluence)   
Electron Fluence Daily Deep Dielectric Discharge Probability:17%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
       X-ray background: A1.0

ACE Satellite Solar Wind Day Averaged Data for 07 Apr
Speed: 614 km/sec  Density:    1.2 p/cc  Temp:   154000 K  Bz:   2 nT

(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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