Daily Report

Geomagnetic Summary

(last updated 25 Apr 2024 23:30 UT)

Geomagnetic field for Australian Region 25 Apr: G0 Estimated Indices 25 Apr : A K Australian Region 1 11000001 Cocos Island 1 12000001 Darwin 1 20000002 Townsville 2 21000002 Learmonth 1 11010000 Alice Springs 1 10000002 Gingin 1 11000001 Canberra 0 00000001 Kennaook Cape Grim 0 00000001 Hobart 0 00000001 Estimated Antarctic Regional K Indices 25 Apr : Macquarie Island 0 00010000 Casey 2 02210001 Mawson 5 20000124 Observed Regional daily pc3 Indices 25 Apr : 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 25 Apr : A Fredericksburg 4 Planetary 4 Observed AFr/Ap Indices 24 Apr : A K Fredericksburg 9 Planetary 7 2100 2111

Geomagnetic Forecast

(last updated 25 Apr 2024 23:30 UT)

Date Ap Conditions 26 Apr 8 G0, slight chance G1 27 Apr 12 G0, slight chance G1 28 Apr 10 G0, slight chance G1 COMMENT: G0 geomagnetic conditions were observed in the Australian and Antarctic regions on UT day 25-Apr. Mostly G0 geomagnetic conditions are expected over 26-28 Apr, with a slight chance for G1 conditions on these days due to the expected arrival of a coronal hole high speed wind stream. There is still a slight possibility that recent CMEs from sunspot regions AR3645 or AR3638 may still arrive at Earth, although this is not expected to be significant if it eventuates.