Daily Report

Geomagnetic Summary

(last updated 18 Feb 2026 23:30 UT)

Geomagnetic field for Australian Region 18 Feb: G0 Estimated Indices 18 Feb : A K Australian Region 6 22122221 Cocos Island 4 12211220 Darwin 6 22122222 Townsville 6 12222222 Learmonth 7 23122222 Alice Springs 6 22122221 Gingin 7 22123221 Canberra 4 12122111 Kennaook Cape Grim 6 22222211 Hobart 5 22222111 Estimated Antarctic Regional K Indices 18 Feb : Macquarie Island 10 23134310 Casey 19 35532222 Mawson 22 44433352 Observed Regional daily pc3 Indices 18 Feb : Darwin 0 (Quiet) Townsville NA Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 22 (Quiet to unsettled) Canberra 31 (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 18 Feb : A Fredericksburg 10 Planetary 13 Observed AFr/Ap Indices 17 Feb : A K Fredericksburg 7 Planetary 11 3223 2323

Geomagnetic Forecast

(last updated 18 Feb 2026 23:30 UT)

Date Ap Conditions 19 Feb 9 G0 20 Feb 8 G0 21 Feb 5 G0 COMMENT: G0 geomagnetic conditions were observed in the Australian region on UT day 18-Feb. Mostly G1 geomagnetic conditions were observed in the Antarctic region. G0 planetary geomagnetic conditions are expected over 19-21 Feb.