Daily Report

Geomagnetic Summary

(last updated 24 Jul 2026 23:30 UT)

Geomagnetic field for Australian Region 24 Jul: G0 Estimated Indices 24 Jul : A K Australian Region 3 32100000 Cocos Island 3 32110000 Darwin 3 32100000 Townsville 5 33210001 Learmonth 5 43100000 Alice Springs 3 32200000 Gingin 5 42200000 Canberra 3 32100001 Kennaook Cape Grim 5 42110000 Hobart 5 42110001 Estimated Antarctic Regional K Indices 24 Jul : Macquarie Island 1 21100000 Casey 7 43211100 Mawson 27 74432001 Observed Regional daily pc3 Indices 24 Jul : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 4 (Quiet) Alice Springs 0 (Quiet) Gingin 60 (Unsettled) Canberra 34 (Quiet to unsettled) Hobart 43 (Unsettled) 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 24 Jul : A Fredericksburg 12 Planetary 13 Observed AFr/Ap Indices 23 Jul : A K Fredericksburg 15 Planetary 22 2233 3553

Geomagnetic Forecast

(last updated 24 Jul 2026 23:30 UT)

Date Ap Conditions 25 Jul 7 G0 26 Jul 5 G0 27 Jul 21 G1 COMMENT: ASWFC Geomagnetic Warning 46 was issued on 23 July and is current for 24-25 Jul. Geomagnetic conditions in the Australian region were at the G0 level on UT day 24-Jul, with G0 conditions reported at the planetary scale. Mostly G0 conditions were reported in the Antarctic region, with an isolated G3 interval recorded early in the UT day at Mawson. G0 conditions are forecast over 25-26 Jul. G1 conditions are expected on 27-Jul due to the partial impact of a CME first observed on 24-Jul.