Daily Report

Geomagnetic Summary

(last updated 19 May 2026 23:30 UT)

Geomagnetic field for Australian Region 19 May: G0 Estimated Indices 19 May : A K Australian Region 16 12443432 Cocos Island 9 12233321 Darwin 12 22333332 Townsville 15 23443322 Learmonth 15 22433432 Alice Springs 13 12343421 Gingin 18 22444432 Canberra 14 12443421 Kennaook Cape Grim 17 12444431 Hobart 19 1244443- Estimated Antarctic Regional K Indices 19 May : Macquarie Island 44 22666631 Casey 16 33343422 Mawson 37 35544644 Observed Regional daily pc3 Indices 19 May : Darwin 2 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 34 (Quiet to unsettled) Canberra 36 (Quiet to unsettled) Hobart 45 (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 19 May : A Fredericksburg 14 Planetary 19 Observed AFr/Ap Indices 18 May : A K Fredericksburg 8 Planetary 9 2222 3223

Geomagnetic Forecast

(last updated 19 May 2026 23:30 UT)

Date Ap Conditions 20 May 10 G0 21 May 6 G0 22 May 6 G0 COMMENT: G0 geomagnetic conditions were observed in the planetary and Australian regions on UT day 19-May. G2 geomagnetic conditions were observed in the Antarctic region. G0 planetary geomagnetic conditions are expected over 20-22 May.