Daily Report

Geomagnetic Summary

(last updated 06 Dec 2025 23:30 UT)

Geomagnetic field for Australian Region 06 Dec: G0 Estimated Indices 06 Dec : A K Australian Region 10 33322222 Cocos Island 8 32322211 Darwin 12 33323223 Townsville 11 33322232 Learmonth 13 33323323 Alice Springs 10 33322222 Gingin 13 43323322 Canberra 9 33322221 Kennaook Cape Grim 12 33432222 Hobart 12 33432222 Estimated Antarctic Regional K Indices 06 Dec : Macquarie Island 30 33554--- Casey 76 57744--- Mawson 35 555443-- Observed Regional daily pc3 Indices 06 Dec : Darwin 6 (Quiet) Townsville 0 (Quiet) Learmonth 4 (Quiet) Alice Springs 2 (Quiet) Gingin 62 (Active) Canberra 87 (Minor storm) Hobart 104 (Major storm) 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 06 Dec : A Fredericksburg 16 Planetary 21 Observed AFr/Ap Indices 05 Dec : A K Fredericksburg 10 Planetary 13 3332 2233

Geomagnetic Forecast

(last updated 06 Dec 2025 23:30 UT)

Date Ap Conditions 07 Dec 10 G0 08 Dec 8 G0 09 Dec 45 G3 COMMENT: ASWFC Geomagnetic Warning 97 was issued on 6 December and is current for 9-10 Dec. G0 geomagnetic conditions were observed in the Australian region. G0-G3 geomagnetic conditions were observed in the Antarctic region. G0 geomagnetic conditions are expected over 7-8 Dec. G3 geomagnetic conditions are expected on 9-Dec due to a halo CME launched on 6-Dec.