Last updated 01 Sep 2010 23:38 UT Geomagnetic field for Australian Region 01 Sep: Quiet Estimated Indices 01 Sep : A K Australian Region 4 21111122 Darwin 4 22101122 Townsville 5 12211222 Learmonth 5 22111122 Canberra 1 01000011 Hobart 2 10100122 Casey(Ant) 7 3-310122 Observed Regional daily pc3 Indices 01 Sep : Darwin 4 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice_Springs 0 (Quiet) Gnangara 2 (Quiet) Canberra 0 (Quiet) Hobart 16 (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 01 Sep : A Fredericksburg 2 Planetary 5 Observed AFr/Ap Indices 31 Aug : A K Fredericksburg 2 Planetary 2 1000 1011

Geomagnetic Forecast

Last updated 01 Sep 2010 23:38 UT Date Ap Conditions 02 Sep 5 Quiet 03 Sep 5 Quiet 04 Sep 5 Quiet COMMENT: Conditions mostly Quiet at all latitudes in the last 24h as solar wind speed remains low and IMF BZ mostly northwards. The exception is a -5nt to -10nt excursion that has been ongoing since ~22UT and caused brief local Active conditions near the auroral oval in the night sector. The small recurrent coronal hole in the north does not appear to have been geoeffective but another more extended hole across the solar equator is more likely be in 3-4 days.