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Summary and Forecasts 
Weekly Report

Last updated 02 Jul 2009 01:59 UT

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 02 JULY 2009, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (23 JUNE - 01 JULY)
K indices are in UT (0-24). For conversion to local time:
AEST = UT + 10 hours; ACST = UT + 9.5 hours; AWST = UT + 8 hours
        Australian Region*              
 Date     K-INDICES    A               
 23 Jun   1112 0102    3     
 24 Jun   3442 1232   13     
 25 Jun   2212 3222    7    
 26 Jun   2211 1011    3    
 27 Jun   1111 1211    3    
 28 Jun   2221 2343   11    
 29 Jun   3322 2101    7    
 30 Jun   1212 0211    4    
 01 Jul   1111 0101    2    

*estimated from real time 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.

Mostly quiet conditions observed during this period with unsettled periods
on 25 and 29 June, and active periods on 24 and 28 June.

2. FORECAST (02 JULY - 01 AUGUST)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
  21 Jul and  25 Jul to 26 Jul.

Best Quiet Periods: 
 2 Jul to 20 Jul,  22 Jul to 24 Jul, and 27 Jul to 01 Aug.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS

Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 2 Jul to 28 Jul.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 2 Jul to 28 Jul.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 2 Jul to 28 Jul.

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.

PLEASE NOTE:
Geomagnetic activity can frequently be determined by short timescale 
solar events that cannot be forecast a week in advance, particularly
at solar maximum.



IPS (Ionospheric Prediction Service) is a unit of the Bureau of Meteorology

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