Daily Report

Geomagnetic Summary

(last updated 17 Oct 2026 23:30 UT)

Geomagnetic field for Australian Region 17 Oct: G0 Estimated Indices 17 Oct : A K Australian Region 6 21111331 Cocos Island 4 11010231 Darwin 7 22111332 Townsville 6 21111331 Learmonth 6 21011332 Alice Springs 5 21001331 Gingin 6 21111331 Canberra 3 11000321 Kennaook Cape Grim 5 11110331 Hobart 4 11100321 Estimated Antarctic Regional K Indices 17 Oct : Casey 16 44431232 Mawson 12 33122342 Observed Regional daily pc3 Indices 17 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 17 Oct : A Fredericksburg 5 Planetary 6 Observed AFr/Ap Indices 16 Oct : A K Fredericksburg 10 Planetary 12 3222 2342

Geomagnetic Forecast

(last updated 17 Oct 2026 23:30 UT)

Date Ap Conditions 18 Oct 6 G0 19 Oct 10 G0 20 Oct 16 G0, chance of G1 COMMENT: G0 geomagnetic conditions were observed in the Australian region on 17-Oct, with G0 conditions also reported in the Antarctic region, and at the planetary level. G0 planetary geomagnetic conditions are forecast over 18-20 Oct, with a chance of G1 on 20-Oct due to high speed wind stream effects from an equatorial coronal hole.