Daily Report

Geomagnetic Summary

(last updated 11 May 2024 23:40 UT)

Geomagnetic field for Australian Region 11 May: G4 Estimated Indices 11 May : A K Australian Region 127 76788655 Cocos Island 64 55667554 Darwin 76 65677545 Townsville 110 76787555 Learmonth 131 76788665 Alice Springs 98 76777555 Gingin 123 76688665 Canberra 129 66888654 Kennaook Cape Grim 207 76999755 Hobart 227 87999755 Estimated Antarctic Regional K Indices 11 May : Macquarie Island 211 76999765 Casey 61 65666545 Mawson 191 76765899 Observed Regional daily pc3 Indices 11 May : Darwin 92 (Minor storm) Townsville 160 (Severe storm) Learmonth NA Alice Springs 180 (Severe storm) Gingin NA Canberra NA 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 May : A Fredericksburg 268 Planetary 317 Observed AFr/Ap Indices 10 May : A K Fredericksburg 80 Planetary 157 3322 3999

Geomagnetic Forecast

(last updated 11 May 2024 23:40 UT)

Date Ap Conditions 12 May 75 G3 13 May 45 G1-G2 14 May 18 G0 COMMENT: ASWFC Geomagnetic Warning 24 was issued on 11 May and is current for 11-12 May. G4 geomagnetic conditions were observed in the Australian region on UT day 11-May, with G5 geomagnetic conditions observed in the Antarctic region. The geomagnetic storm activity was induced by several CMEs. Further CME arrivals are anticipated on 12 and 13-May, which are expected to induce G3 conditions. Geomagnetic activity is then expected to decline by 14-May.