Daily Report

Geomagnetic Summary

(last updated 11 Jul 2025 23:32 UT)

Geomagnetic field for Australian Region 11 Jul: G0 Estimated Indices 11 Jul : A K Australian Region 10 22233232 Cocos Island 8 23232122 Darwin 11 22233233 Townsville 9 22233222 Learmonth 12 22333233 Alice Springs 10 22233232 Gingin 13 22343133 Canberra 8 12233222 Kennaook Cape Grim 10 11243232 Hobart 10 11243232 Estimated Antarctic Regional K Indices 11 Jul : Macquarie Island 15 01354232 Casey 10 13332132 Mawson 19 04443334 Observed Regional daily pc3 Indices 11 Jul : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 2 (Quiet) Canberra 7 (Quiet) Hobart 25 (Quiet to 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 11 Jul : A Fredericksburg 15 Planetary 18 Observed AFr/Ap Indices 10 Jul : A K Fredericksburg 6 Planetary 6 1111 1111

Geomagnetic Forecast

(last updated 11 Jul 2025 23:32 UT)

Date Ap Conditions 12 Jul 16 G0-G1 13 Jul 19 G1. chance G2 14 Jul 16 G0-G1 COMMENT: ASWFC Geomagnetic Warning 53 was issued on 11 July and is current for 11-12 Jul. Observations: G0 geomagnetic conditions were observed in the Australian region on UT day 11-Jul. G0-G1 conditions were observed in the Antarctic region. Forecast: G1 periods are possible over 12-14 Jul due to the influence of a coronal hole wind stream. There is a chance for a very weak CME arrival on 13-Jul.