Daily Report

Geomagnetic Summary

(last updated 26 Feb 2021 23:30 UT)

Geomagnetic field for Australian Region 26 Feb: Quiet to Unsettled Estimated Indices 26 Feb : A K Australian Region 8 21122332 Cocos Island 7 21122331 Darwin 7 11122331 Townsville 9 21122342 Learmonth 10 21123342 Alice Springs 6 10122331 Gingin 7 21022332 Canberra 6 11022232 Hobart 6 11122232 Estimated Antarctic Regional K Indices 26 Feb : Macquarie Island 9 21143221 Casey 13 34332232 Mawson 29 54333246 Observed Regional daily pc3 Indices 26 Feb : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 0 (Quiet) Canberra 0 (Quiet) Melbourne NA 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 Feb : A Fredericksburg 9 Planetary 8 Observed AFr/Ap Indices 25 Feb : A K Fredericksburg 13 Planetary 15 5423 1323

Geomagnetic Forecast

(last updated 26 Feb 2021 23:30 UT)

Date Ap Conditions 27 Feb 9 Quiet to Unsettled 28 Feb 7 Quiet 01 Mar 15 Unsettled to Active COMMENT: On UT day 26 February, mostly quiet to unsettled conditions were observed in the Australian region. Quiet to storm levels were observed in the Antarctic region. Global geomagnetic conditions are expected to be quiet to unsettled on UT day 27 February and mostly quiet on 28 February. On 1 March geomagnetic activity is expected to reach active levels with possible minor storm periods due to coronal hole effects.