[Ips-dsgr] IPS Daily Report - 27 April 09

[rwc]

SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 27/2330Z APRIL 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 27 APRIL AND FORECAST FOR 28 APRIL - 30 APRIL
STATUS INDICATORS SOL:GREEN   MAG:GREEN     ION: GREEN
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1A. SOLAR SUMMARY
Activity 27 Apr:  Very low

Flares: none.

Observed 10.7 cm flux/Equivalent Sunspot Number for 27 Apr:  68/2

1B. SOLAR FORECAST
             28 Apr             29 Apr             30 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 visible solar disk is spotless. The solar wind speed 
ranged from 340 to 380 km/s. 

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2A. MAGNETIC SUMMARY

Geomagnetic field for Australian Region 27 Apr: Quiet 

Estimated Indices 27 Apr :  A   K           
   Australian Region       3   12120011
      Darwin               1   11010011
      Townsville           6   22221122
      Learmonth            2   22010010
      Canberra             1   01020000
      Hobart               1   11020000
      Casey(Ant)           3   12111111
    
Observed Regional daily pc3 Indices 27 Apr : 
      Darwin               0   (Quiet)
      Townsville           0   (Quiet)
      Learmonth            0   (Quiet)
      Alice_Springs        0   (Quiet)
      Gnangara            13   (Quiet)
      Canberra             6   (Quiet)
      Hobart              11   (Quiet)
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 27 Apr : A 
           Fredericksburg         3
           Planetary              5                         

Observed AFr/Ap Indices 26 Apr :  A   K
           Fredericksburg         3
           Planetary              5   1111 1212     

2B. MAGNETIC FORECAST 
Date      Ap    Conditions
28 Apr     4    Quiet 
29 Apr     4    Quiet 
30 Apr     4    Quiet 
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3A. GLOBAL HF PROPAGATION SUMMARY
	            Latitude Band
Date        Low            Middle         High 
27 Apr      Normal         Normal         Normal         
PCA Event : No event.

3B. GLOBAL HF PROPAGATION FORECAST
	            Latitude Band
Date        Low            Middle         High 
28 Apr      Normal         Normal         Normal
29 Apr      Normal         Normal         Normal
30 Apr      Normal         Normal         Normal

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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY

Date   T index
27 Apr    -4

Observed Australian Regional MUFs
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day,
      Depressed by 20% during local night.
      Depressed by 30% after local dawn.
   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 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% over the UT day, when trace is visible.

Predicted Monthly T index for April:   3

4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date   T index  MUFs
28 Apr     5    near predicted monthly values/depressed 10 to 
                20% 
29 Apr     5    near predicted monthly values/depressed 10 to 
                20% 
30 Apr     5    near predicted monthly values/depressed 10 to 
                20% 

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5. SPACE ENVIRONMENT SUMMARY

GOES satellite data for 26 Apr
       Daily Proton Fluence >1 MeV:   5.7E+05
       Daily Proton Fluence >10 MeV:  1.9E+04
       Daily Electron Fluence >2 MeV: 7.50E+05   (normal fluence)   
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
       X-ray background: A1.0

ACE Satellite Solar Wind Day Averaged Data for 26 Apr
Speed: 388 km/sec  Density:    3.6 p/cc  Temp:    45800 K  Bz:   1 nT

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