Daily Report

Geomagnetic Summary

(last updated 07 Jul 2025 23:32 UT)

Geomagnetic field for Australian Region 07 Jul: G0 Estimated Indices 07 Jul : A K Australian Region 11 33223322 Cocos Island 8 32222321 Darwin 10 33222322 Townsville - -------- Learmonth 12 33323331 Alice Springs 8 33222221 Gingin 14 43323332 Canberra 8 32222222 Kennaook Cape Grim 9 32223222 Hobart 11 33223322 Estimated Antarctic Regional K Indices 07 Jul : Macquarie Island 19 43235422 Casey 28 33332732 Mawson 41 64544634 Observed Regional daily pc3 Indices 07 Jul : Darwin 0 (Quiet) Townsville NA Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 0 (Quiet) Canberra 6 (Quiet) Hobart 24 (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 07 Jul : A Fredericksburg 18 Planetary 21 Observed AFr/Ap Indices 06 Jul : A K Fredericksburg 20 Planetary 26 4534 3235

Geomagnetic Forecast

(last updated 07 Jul 2025 23:32 UT)

Date Ap Conditions 08 Jul 14 G0, G1 periods late in the UT day 09 Jul 18 G1 10 Jul 12 G0 COMMENT: ASWFC Geomagnetic Warning 52 was issued on 7 July and is current for 8-9 Jul. G0 geomagnetic conditions were observed in the Australian region on UT day 7-Jul. G0-G3 geomagnetic conditions were observed in the Antarctic region. Brief G1 planetary conditions were observed early in the UT day. Geomagnetic 27 day recurrence patterns indicate that G1 conditions are likely during the interval 8-9 Jul.