[Ips-dsgr] IPS Daily Report - 22 April 09

[rwc]

SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 22/2330Z APRIL 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 22 APRIL AND FORECAST FOR 23 APRIL - 25 APRIL
STATUS INDICATORS SOL:GREEN   MAG:GREEN     ION: GREEN
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity 22 Apr:  Very low

Flares: none.

Observed 10.7 cm flux/Equivalent Sunspot Number for 22 Apr:  71/6


1B. SOLAR FORECAST
             23 Apr             24 Apr             25 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: Solar wind parameters have declined towards nominal 
levels. 




-----------------------------------------------------------
2A. MAGNETIC SUMMARY

Geomagnetic field for Australian Region 22 Apr: Quiet 

Estimated Indices 22 Apr :  A   K           
   Australian Region       4   22122001
      Darwin               2   11111001
      Townsville           6   22222122
      Learmonth            4   22122001
      Camden               -   --------
      Canberra             2   11021000
      Hobart               3   12121001
      Casey(Ant)           5   23212001
    
Observed Regional daily pc3 Indices 22 Apr : 
      Darwin               0   (Quiet)
      Townsville           0   (Quiet)
      Learmonth            0   (Quiet)
      Alice_Springs        0   (Quiet)
      Camden              NA
      Gnangara             0   (Quiet)
      Canberra             0   (Quiet)
      Hobart               2   (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 22 Apr : A 
           Fredericksburg         3
           Planetary              5                         

Observed AFr/Ap Indices 21 Apr :  A   K
           Fredericksburg         3
           Planetary              5   1121 1111     


2B. MAGNETIC FORECAST 
Date      Ap    Conditions
23 Apr     4    Quiet 
24 Apr     3    Quiet 
25 Apr     3    Quiet 
COMMENT: Isolated unsettled periods observed at high latitudes. 
Expect generally quiet geomagnetic conditions next three days. 

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

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

-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY


Date   T index
22 Apr     3

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:
      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 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 20% at times. 
      Periods of weak ionisation, mainly local night.

Predicted Monthly T index for April:   3

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

GOES satellite data for 21 Apr
       Daily Proton Fluence >1 MeV:   4.1E+05
       Daily Proton Fluence >10 MeV:  1.9E+04
       Daily Electron Fluence >2 MeV: 2.50E+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 21 Apr
Speed: 442 km/sec  Density:    1.1 p/cc  Temp:    74600 K  Bz:   1 nT

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


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 

IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information.  The views expressed in 
this message are those of the individual sender, unless 
specifically stated to be the views of IPS.  If you are not 
the intended recipient, please contact the sender immediately 
and delete all copies of this e-mail and attachments. 
Occasionally IPS sends email promoting IPS products and 
services to its mailing list customers. If you do not wish to 
receive this promotional material please email 
no-spam at ips.gov.au with the subject header:UNSUBSCRIBE"