[Ips-dsgr] IPS Daily Report - 23 April 09

[rwc]

SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 23/2330Z APRIL 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 23 APRIL AND FORECAST FOR 24 APRIL - 26 APRIL
STATUS INDICATORS SOL:GREEN   MAG:GREEN     ION: GREEN
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1A. SOLAR SUMMARY
Activity 23 Apr:  Very low

Flares: none.

Observed 10.7 cm flux/Equivalent Sunspot Number for 23 Apr:  71/6


1B. SOLAR FORECAST
             24 Apr             25 Apr             26 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: An East-directed CME was observed in LASCO imagery early 
in the UT day. This was probably associated with an eruptive 
prominenece on the solar East limb. The CME does not appear to 
be Earth-directed. 




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2A. MAGNETIC SUMMARY

Geomagnetic field for Australian Region 23 Apr: Quiet 

Estimated Indices 23 Apr :  A   K           
   Australian Region       2   11110011
      Darwin               2   21100001
      Townsville           5   22211122
      Learmonth            1   11200000
      Camden               -   --------
      Canberra             0   01000000
      Hobart               1   11010000
      Casey(Ant)           4   22211111
    
Observed Regional daily pc3 Indices 23 Apr : 
      Darwin               0   (Quiet)
      Townsville           0   (Quiet)
      Learmonth            0   (Quiet)
      Alice_Springs        0   (Quiet)
      Camden              NA
      Gnangara             0   (Quiet)
      Canberra             0   (Quiet)
      Hobart               0   (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 23 Apr : A 
           Fredericksburg         2
           Planetary              5                         

Observed AFr/Ap Indices 22 Apr :  A   K
           Fredericksburg         2
           Planetary              4   2101 1102     


2B. MAGNETIC FORECAST 
Date      Ap    Conditions
24 Apr     3    Quiet 
25 Apr     3    Quiet 
26 Apr     3    Quiet 
COMMENT: Mostly quiet conditions observed throughout the region. 
Expect generally quiet geomagnetic conditions next three days. 

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

3B. GLOBAL HF PROPAGATION FORECAST
	            Latitude Band
Date        Low            Middle         High 
24 Apr      Normal         Normal         Normal
25 Apr      Normal         Normal         Normal
26 Apr      Normal         Normal         Normal

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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY


Date   T index
23 Apr     4

Observed Australian Regional MUFs
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Variable conditions during local night.
      Depressed by 20% after local dawn.
   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):
      Near predicted monthly values over the UT day.

Predicted Monthly T index for April:   3

4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date   T index  MUFs
24 Apr     3    Near predicted monthly values 
25 Apr     3    Near predicted monthly values 
26 Apr     3    Near predicted monthly values 
COMMENT: Variable depressions observed Equatorial/N Aus regions. 
Periods of weak ionospheric conditions observed Antarctic region 
local night. Otherwise conditions mostly normal. Expect mostly 
normal conditions next three days. 
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5. SPACE ENVIRONMENT SUMMARY

GOES satellite data for 22 Apr
       Daily Proton Fluence >1 MeV:   6.1E+05
       Daily Proton Fluence >10 MeV:  2.0E+04
       Daily Electron Fluence >2 MeV: 3.20E+06   (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 22 Apr
Speed: 401 km/sec  Density:    1.2 p/cc  Temp:    56500 K  Bz:   1 nT

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