Daily Report

Geomagnetic Summary

(last updated 03 Oct 2026 23:30 UT)

Geomagnetic field for Australian Region 03 Oct: G0 Estimated Indices 03 Oct : A K Australian Region 4 22221100 Cocos Island 3 21221000 Darwin 5 32221101 Townsville 6 32222111 Learmonth 5 22222200 Alice Springs 4 22221100 Gingin 4 22221200 Canberra 4 21222101 Kennaook Cape Grim 4 21221201 Hobart 4 21221200 Estimated Antarctic Regional K Indices 03 Oct : Casey 6 32321002 Mawson 7 32232111 Observed Regional daily pc3 Indices 03 Oct : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 0 (Quiet) Canberra 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 International Center for Space Weather Science and Education, Japan. Estimated AFr/Ap Indices 03 Oct : A Fredericksburg 10 Planetary 12 Observed AFr/Ap Indices 02 Oct : A K Fredericksburg 2 Planetary 3 1101 1011

Geomagnetic Forecast

(last updated 03 Oct 2026 23:30 UT)

Date Ap Conditions 04 Oct 20 G1 05 Oct 15 G0 06 Oct 8 G0 COMMENT: ASWFC Geomagnetic Warning 59 was issued on 3 October and is current for 3-4 Oct. Geomagnetic conditions in the Australian region were at the G0 level on UT day 03-Oct, with G0 conditions also reported in the Antarctic region, and at the planetary level. G1 conditions are forecast for 04-Oct due to high speed wind stream effects from an equatorial coronal hole, in addition to a possible glancing CME arrival. G0 conditions are then expected over 05-06 Oct as these effects pass.