Daily Report

Geomagnetic Summary

(last updated 20 May 2026 23:30 UT)

Geomagnetic field for Australian Region 20 May: G0 Estimated Indices 20 May : A K Australian Region 2 22100001 Cocos Island 2 12110000 Darwin 4 22200112 Townsville 2 22100011 Learmonth 3 22200011 Alice Springs 2 22100001 Gingin 2 22100011 Canberra 1 21100000 Kennaook Cape Grim 2 22100000 Hobart 3 23100000 Estimated Antarctic Regional K Indices 20 May : Macquarie Island 3 23100000 Casey 6 33211111 Mawson 26 64422225 Observed Regional daily pc3 Indices 20 May : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 6 (Quiet) Canberra 23 (Quiet to unsettled) Hobart 53 (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 20 May : A Fredericksburg 8 Planetary 8 Observed AFr/Ap Indices 19 May : A K Fredericksburg 18 Planetary 19 2344 4433

Geomagnetic Forecast

(last updated 20 May 2026 23:30 UT)

Date Ap Conditions 21 May 7 G0 22 May 5 G0 23 May 4 G0 COMMENT: G0 geomagnetic conditions were observed in the Australian region on UT day 20-May. Mostly G0 geomagnetic conditions were observed in the Antarctic region, with G2 conditions observed at Mawson at the beginning of the UT day. G0 geomagnetic conditions are expected over 21-23 May.