Daily Report
Geomagnetic Summary
(last updated 15 May 2026 23:30 UT)
Geomagnetic field for Australian Region 15 May: G1 Estimated Indices 15 May : A K Australian Region 19 22225335 Cocos Island 13 22323334 Darwin 18 22334335 Townsville 21 22335335 Learmonth 22 22335345 Alice Springs 19 12235335 Gingin 17 12224435 Canberra 18 11225335 Kennaook Cape Grim 18 21225335 Hobart 18 21225335 Estimated Antarctic Regional K Indices 15 May : Macquarie Island 34 11246645 Casey 26 23333356 Mawson 61 43445468 Observed Regional daily pc3 Indices 15 May : Darwin 9 (Quiet) Townsville 3 (Quiet) Learmonth 2 (Quiet) Alice Springs 4 (Quiet) Gingin 39 (Quiet to unsettled) Canberra 48 (Unsettled) Hobart 111 (Major storm) 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 15 May : A Fredericksburg 22 Planetary 36 Observed AFr/Ap Indices 14 May : A K Fredericksburg 5 Planetary 5 3221 1111
Geomagnetic Forecast
(last updated 15 May 2026 23:30 UT)
Date Ap Conditions 16 May 20 G0-G1 17 May 16 G0, chance of G1 18 May 12 G0 COMMENT: ASWFC Geomagnetic Warning 32 was issued on 15 May and is current for 15-16 May. G1 geomagnetic conditions were observed at both the planetary level and in the Australian region on 15-May. Mostly G2 conditions were observed in the Antarctic region, with a period of G4 observed at Mawson. G0-G1 geomagnetic conditions are expected on 16-May and G0 geomagnetic conditions, with a chance of G1 are expected on 17-May due to ongoing coronal hole high speed wind stream effects. G0 conditions are expected on 18-May.
