Daily Report

Geomagnetic Summary

(last updated 21 Aug 2026 23:37 UT)

Geomagnetic field for Australian Region 21 Aug: G0 Estimated Indices 21 Aug : A K Australian Region 4 22211011 Cocos Island 2 12111010 Darwin 4 22211012 Townsville 5 23211012 Learmonth 3 22101011 Alice Springs 4 22211011 Gingin 3 22101021 Canberra 4 22220011 Kennaook Cape Grim 4 22121011 Hobart 5 32221011 Estimated Antarctic Regional K Indices 21 Aug : Macquarie Island 4 22221001 Casey 9 33322122 Mawson 14 54212123 Observed Regional daily pc3 Indices 21 Aug : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 12 (Quiet) Canberra 6 (Quiet) Hobart 6 (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 21 Aug : A Fredericksburg 9 Planetary 11 Observed AFr/Ap Indices 20 Aug : A K Fredericksburg 11 Planetary 11 3222 3233

Geomagnetic Forecast

(last updated 21 Aug 2026 23:37 UT)

Date Ap Conditions 22 Aug 6 G0 23 Aug 6 G0 24 Aug 4 G0 COMMENT: G0 geomagnetic conditions were observed at the planetary level and Australian region on UT day 21-Aug. Mostly G0 conditions were observed in the Antarctic region, with a period of G1 observed at Mawson. G0 planetary geomagnetic conditions are expected over 22-24 Aug.