Daily Report

Geomagnetic Summary

(last updated 30 Apr 2025 23:30 UT)

Geomagnetic field for Australian Region 30 Apr: G0 Estimated Indices 30 Apr : A K Australian Region 5 22221112 Cocos Island 5 22221112 Darwin 6 22221222 Townsville 8 22231223 Learmonth 8 32322122 Alice Springs 7 32231112 Gingin 6 31221122 Canberra 5 21221112 Kennaook Cape Grim 6 21321112 Hobart 5 21321111 Estimated Antarctic Regional K Indices 30 Apr : Macquarie Island 11 11542001 Casey 7 23232101 Mawson 15 44433211 Observed Regional daily pc3 Indices 30 Apr : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 0 (Quiet) Canberra 3 (Quiet) Hobart 13 (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 Apr : A Fredericksburg 11 Planetary 11 Observed AFr/Ap Indices 29 Apr : A K Fredericksburg 6 Planetary 6 0222 2122

Geomagnetic Forecast

(last updated 30 Apr 2025 23:30 UT)

Date Ap Conditions 01 May 15 G0, chance of G1 02 May 15 G0, chance of G1 03 May 15 G0, chance of G1 COMMENT: G0 geomagnetic conditions were observed in the Australian region on UT day 30-Apr. Mostly G0 geomagnetic conditions were observed in the Antarctic region, with an isolated period of G1 observed at Macquarie Island. G0 geomagnetic conditions are expected over 01-03 May, with a chance of G1 due to coronal hole high speed wind stream effects.