Daily Report

Geomagnetic Summary

(last updated 30 Oct 2026 23:30 UT)

Geomagnetic field for Australian Region 30 Oct: G0 Estimated Indices 30 Oct : A K Australian Region 8 22312213 Cocos Island 5 12212112 Darwin 9 23322123 Townsville 10 23323213 Learmonth 8 22322213 Alice Springs 7 22322212 Gingin 7 22212213 Canberra 6 12312212 Kennaook Cape Grim 7 12312213 Hobart 8 13312213 Estimated Antarctic Regional K Indices 30 Oct : Casey 16 34522223 Mawson 18 32322226 Observed Regional daily pc3 Indices 30 Oct : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 0 (Quiet) Canberra 0 (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 Oct : A Fredericksburg 8 Planetary 9 Observed AFr/Ap Indices 29 Oct : A K Fredericksburg 4 Planetary 4 2210 0001

Geomagnetic Forecast

(last updated 30 Oct 2026 23:30 UT)

Date Ap Conditions 31 Oct 20 G0-G1 01 Nov 12 G0, chance of G1 02 Nov 8 G0 COMMENT: ASWFC Geomagnetic Warning 64 was issued on 29 October and is current for 30-31 Oct. G0 geomagnetic conditions were observed in the Australian region and at the planetary level on UT day 30-Oct. G1 conditions were observed in the Antarctic region. G0-G1 planetary geomagnetic conditions are expected on 31-Oct due to high-speed wind stream effects as Earth connects to a trans-equatorial coronal hole. G0 conditions, with a chance of G1 are expected on 01-Nov due to coronal hole high speed wind stream effects. G0 conditions are expected on 02-Nov.