Daily Report

Geomagnetic Summary

(last updated 22 May 2018 23:36 UT)

Geomagnetic field for Australian Region 22 May: Quiet Estimated Indices 22 May : A K Australian Region 3 00212211 Cocos Island 2 01112110 Darwin 4 01212211 Townsville 4 01212211 Learmonth 3 00212210 Alice Springs 3 00212210 Gingin 2 00201210 Canberra 3 01201211 Launceston 3 00202211 Hobart 2 00201211 Estimated Antarctic Regional K Indices 22 May : Macquarie Island 1 00200100 Casey 5 12212211 Mawson 12 22122253 Observed Regional daily pc3 Indices 22 May : 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 22 May : A Fredericksburg 6 Planetary 9 Observed AFr/Ap Indices 21 May : A K Fredericksburg 3 Planetary 4 1101 1011

Geomagnetic Forecast

(last updated 22 May 2018 23:36 UT)

Date Ap Conditions 23 May 10 Quiet to Unsettled 24 May 7 Quiet 25 May 7 Quiet COMMENT: Magnetic conditions were at quiet levels across the Australian region during the UT day, 22 May. Mostly quiet to unsettled magnetic conditions are expected today 23 May in response to moderate solar speed streams emanating from a polar connected, positive polarity coronal hole. Expect magnetic conditions to drop to mostly quiet levels from 24 May as the coronal hole effect wanes.