Daily Report

Geomagnetic Summary

(last updated 23 Jul 2021 23:40 UT)

Geomagnetic field for Australian Region 23 Jul: Quiet Estimated Indices 23 Jul : A K Australian Region 1 11100001 Cocos Island 1 11010001 Darwin 1 11100000 Townsville 2 11100002 Learmonth 1 11100001 Alice Springs 0 01100000 Gingin 0 00100001 Canberra 0 01100000 Hobart 0 01010000 Estimated Antarctic Regional K Indices 23 Jul : Macquarie Island 1 00121000 Casey 3 12210101 Mawson 9 22112105 Observed Regional daily pc3 Indices 23 Jul : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 0 (Quiet) Canberra 0 (Quiet) Hobart 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 23 Jul : A Fredericksburg 8 Planetary 11 Observed AFr/Ap Indices 22 Jul : A K Fredericksburg 9 Planetary 10 1234 3121

Geomagnetic Forecast

(last updated 23 Jul 2021 23:40 UT)

Date Ap Conditions 24 Jul 8 Quiet. There is still the possibility that the 20 July CME may impact. Unsettled to active conditions could then be expected. 25 Jul 7 Quiet 26 Jul 7 Quiet COMMENT: Geomagnetic conditions in the Australian and Antarctic regions were quiet on UT day 23 July. Global geomagnetic conditions are expected to be mostly quiet on UT days 24-26 July. There is a diminishing chance that the 20/1648 UT CME will impact Earth. If the impact does occur, unsettled to active levels are possible.