Daily Report
Geomagnetic Summary
(last updated 10 Oct 2026 23:32 UT)
Geomagnetic field for Australian Region 10 Oct: G2 Estimated Indices 10 Oct : A K Australian Region 32 22224665 Cocos Island 30 12213665 Darwin 32 22224665 Townsville 40 22224765 Learmonth 44 23225765 Alice Springs 39 12224765 Gingin 44 22224676 Canberra 31 22324664 Kennaook Cape Grim 31 22324664 Hobart 31 22324664 Estimated Antarctic Regional K Indices 10 Oct : Casey 30 34322655 Mawson 50 25333676 Observed Regional daily pc3 Indices 10 Oct : Darwin 11 (Quiet) Townsville 36 (Quiet to unsettled) Learmonth 12 (Quiet) Alice Springs 30 (Quiet to unsettled) Gingin 55 (Unsettled) Canberra 125 (Severe storm) 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 International Center for Space Weather Science and Education, Japan. Estimated AFr/Ap Indices 10 Oct : A Fredericksburg 25 Planetary 53 Observed AFr/Ap Indices 09 Oct : A K Fredericksburg 10 Planetary 11 3324 2112
Geomagnetic Forecast
(last updated 10 Oct 2026 23:32 UT)
Date Ap Conditions 11 Oct 38 G1-G2 12 Oct 19 G1 13 Oct 22 G1, chance of G2 COMMENT: ASWFC Geomagnetic Warning 61 was issued on 7 October and is current for 9-11 Oct. G2 geomagnetic conditions were observed in the Australian region on UT day 10-Oct, with isolated periods of G3 observed at several Australian sites. G3 geomagnetic conditions were observed at the planetary level and in the Antarctic region. Observed geomagnetic activity was due to the arrival of a CME at Earth, with a moderate sudden impulse observed in BOM magnetometer data at 10/1513UT. G1-G2 planetary geomagnetic conditions are expected on 11-Oct due to ongoing CME effects as well as the arrival of two CMEs first observed on 08-Oct, in combination with continuing high speed wind stream effects from a southern hemisphere coronal hole. G1 conditions are forecast for 12-Oct due to continuing CME effects. G1 conditions are expected on 13-Oct, with a chance of G2 due to the combined coronal hole high speed wind stream effects from a southern hemisphere coronal hole and an equatorial coronal hole.
