Daily Report

Geomagnetic Summary

(last updated 17 Nov 2025 23:30 UT)

Geomagnetic field for Australian Region 17 Nov: G0 Estimated Indices 17 Nov : A K Australian Region 6 22212122 Cocos Island 4 22111021 Darwin 7 32211123 Townsville 7 32212122 Learmonth 6 32211122 Alice Springs 4 22201022 Gingin 7 32212122 Canberra 4 22202111 Kennaook Cape Grim 7 23312112 Hobart 7 23312112 Estimated Antarctic Regional K Indices 17 Nov : Macquarie Island 8 33303111 Casey 33 46643233 Mawson 19 44423234 Observed Regional daily pc3 Indices 17 Nov : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 4 (Quiet) Canberra 4 (Quiet) Hobart 7 (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 17 Nov : A Fredericksburg 12 Planetary 12 Observed AFr/Ap Indices 16 Nov : A K Fredericksburg 13 Planetary 18 4334 4333

Geomagnetic Forecast

(last updated 17 Nov 2025 23:30 UT)

Date Ap Conditions 18 Nov 8 G0 19 Nov 7 G0 20 Nov 12 G0 COMMENT: G0 geomagnetic conditions were observed across the Australian regions over UT day 17-Nov. Mostly G0 geomagnetic conditions were observed in the Antarctic region over the same period, with brief periods of G2 reported at Casey. G0 geomagnetic conditions are expected on 18-20 Nov, with no significant coronal mass ejection events or no coronal hole high speed wind streams forecast over this period.