Daily Report

Geomagnetic Summary

(last updated 30 Jun 2025 23:30 UT)

Geomagnetic field for Australian Region 30 Jun: G0 Estimated Indices 30 Jun : A K Australian Region 8 22231321 Cocos Island 6 22221221 Darwin 8 22231321 Townsville 8 22231321 Learmonth 10 23331321 Alice Springs 7 12231321 Gingin 9 22231331 Canberra 6 11230321 Kennaook Cape Grim 8 11241321 Hobart 8 11241321 Estimated Antarctic Regional K Indices 30 Jun : Macquarie Island 14 22350421 Casey 9 23232222 Mawson 37 45443546 Observed Regional daily pc3 Indices 30 Jun : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 0 (Quiet) Canberra 8 (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 30 Jun : A Fredericksburg 8 Planetary 10 Observed AFr/Ap Indices 29 Jun : A K Fredericksburg 11 Planetary 0 2222 2223

Geomagnetic Forecast

(last updated 30 Jun 2025 23:30 UT)

Date Ap Conditions 01 Jul 6 G0, chance G1 02 Jul 20 G0-G1 03 Jul 15 G0, chance G1 COMMENT: ASWFC Geomagnetic Warning 49 was issued on 30 June and is current for 2 Jul only. G0 geomagnetic conditions were observed in the Australian region on UT day 20-Jun. G0-G2 geomagnetic conditions were observed in the Antarctic region. G0 geomagnetic conditions are expected on 1-Jul. G1 geomagnetic conditions may begin either late 1-Jul or else early on 2-Jul due to an anticipated CME impact which may continue into 3-Jul.