Daily Report

Geomagnetic Summary

(last updated 26 Jun 2026 23:30 UT)

Geomagnetic field for Australian Region 26 Jun: G0 Estimated Indices 26 Jun : A K Australian Region 8 22212332 Cocos Island 7 21212331 Darwin 8 22212331 Townsville 9 22312332 Learmonth 14 22313532 Alice Springs 8 22212332 Gingin 12 22302442 Canberra 8 22212332 Kennaook Cape Grim 8 22212332 Hobart 8 22212332 Estimated Antarctic Regional K Indices 26 Jun : Macquarie Island 12 22214431 Casey 22 33323363 Mawson 41 55523266 Observed Regional daily pc3 Indices 26 Jun : Darwin NA Townsville 2 (Quiet) Learmonth 14 (Quiet) Alice Springs 7 (Quiet) Gingin 58 (Unsettled) Canberra 53 (Unsettled) Hobart 69 (Active) 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 26 Jun : A Fredericksburg 9 Planetary 11 Observed AFr/Ap Indices 25 Jun : A K Fredericksburg 29 Planetary 25 4543 4343

Geomagnetic Forecast

(last updated 26 Jun 2026 23:30 UT)

Date Ap Conditions 27 Jun 16 G0, chance of G1 28 Jun 12 G0 29 Jun 10 G0 COMMENT: ASWFC Geomagnetic Warning 38 was issued on 25 June and is current for 25-27 Jun. Geomagnetic conditions in the Australian region were at the G0 level on UT day 26-Jun, with a G1 interval observed at Learmonth. G0 conditions were reported at the planetary level. Periods of G2 were recorded in the Antarctic region. Geomagnetic conditions are expected to be at the G0 level over 27-29 Jun, with a chance of G1 on 27-Jun due to an elevated solar wind speed from a coronal hole high speed wind stream.