Daily Report

Geomagnetic Summary

(last updated 07 Aug 2025 23:30 UT)

Geomagnetic field for Australian Region 07 Aug: G0 Estimated Indices 07 Aug : A K Australian Region 1 11100001 Cocos Island 1 11100000 Darwin 2 21100002 Townsville 2 11100012 Learmonth 1 11110000 Alice Springs 1 11100001 Gingin 1 21000001 Canberra 1 11000001 Kennaook Cape Grim 1 21000001 Hobart 1 21000001 Estimated Antarctic Regional K Indices 07 Aug : Macquarie Island 0 10010000 Casey 4 23211001 Mawson 10 22221025 Observed Regional daily pc3 Indices 07 Aug : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 0 (Quiet) Canberra 0 (Quiet) Hobart 0 (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 07 Aug : A Fredericksburg 8 Planetary 10 Observed AFr/Ap Indices 06 Aug : A K Fredericksburg 0 Planetary 0 2211 2212

Geomagnetic Forecast

(last updated 07 Aug 2025 23:30 UT)

Date Ap Conditions 08 Aug 20 G0-G1 09 Aug 20 G0-G1 10 Aug 14 G0 COMMENT: G0 geomagnetic conditions were observed in the Australian region on UT day 07-Aug. Mostly G0 geomagnetic conditions were observed in the Antarctic region, with an isolated period of G1 observed at Mawson. G0-G1 geomagnetic conditions are expected over 08-09 Aug due to the combined effects of a southern hemisphere coronal hole and a possible glancing CME arrival on 08-Aug. G0 geomagnetic conditions are expected on 10-Aug.