Daily Report

Geomagnetic Summary

(last updated 28 Jun 2026 23:30 UT)

Geomagnetic field for Australian Region 28 Jun: G0 Estimated Indices 28 Jun : A K Australian Region 2 12110000 Cocos Island 1 11010000 Darwin 2 12100001 Townsville 2 12110001 Learmonth 2 21110000 Alice Springs 2 12110000 Gingin 2 22110001 Canberra 2 12110000 Kennaook Cape Grim 1 11110000 Hobart 1 11010000 Estimated Antarctic Regional K Indices 28 Jun : Macquarie Island 1 11010000 Casey 4 23210011 Mawson 20 33421055 Observed Regional daily pc3 Indices 28 Jun : Darwin NA Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 2 (Quiet) Canberra 2 (Quiet) Hobart 2 (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 28 Jun : A Fredericksburg 9 Planetary 10 Observed AFr/Ap Indices 27 Jun : A K Fredericksburg 8 Planetary 7 3221 212-

Geomagnetic Forecast

(last updated 28 Jun 2026 23:30 UT)

Date Ap Conditions 29 Jun 8 G0 30 Jun 22 G1 01 Jul 20 G0-G1 COMMENT: Geomagnetic conditions in the Australian region on UT day 28-Jun were at the G0 level, with G0 conditions also reported at the planetary scale. Mostly G0 conditions were recorded in the Antarctic region, with some intervals of G1 reported at Mawson. G0 conditions are forecast on 29-Jun, rising to G1 conditions on 30-Jun due to the forecast impact of a CME first observed on 26-Jun. G0-G1 conditions are forecast for 01-Jul due to the ongoing effects of this CME impact.