Daily Report
Geomagnetic Summary
(last updated 27 Feb 2019 23:30 UT)
Geomagnetic field for Australian Region 27 Feb: Quiet to Unsettled Estimated Indices 27 Feb : A K Australian Region 7 00113323 Cocos Island 4 10112222 Darwin 6 10112323 Townsville 7 01113323 Learmonth 7 00113323 Alice Springs 6 00112323 Gingin 7 10123223 Canberra 7 00113323 Launceston 9 11123333 Hobart 8 00113333 Estimated Antarctic Regional K Indices 27 Feb : Macquarie Island 15 00025532 Casey 12 23332323 Mawson 18 31113336 Observed Regional daily pc3 Indices 27 Feb : Darwin 0 (Quiet) Townsville NA 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 27 Feb : A Fredericksburg 8 Planetary 12 Observed AFr/Ap Indices 26 Feb : A K Fredericksburg 2 Planetary 3 1000 0111
Geomagnetic Forecast
(last updated 27 Feb 2019 23:30 UT)
Date Ap Conditions 28 Feb 25 Unsettled to Active with possible Minor to Major Storm periods. 01 Mar 15 Quiet to Active 02 Mar 10 Quiet to Unsettled COMMENT: SWS Geomagnetic Warning 4 was issued on 25 February and is current for 28 Feb only. Quiet to Unsettled geomagnetic conditions were observed in the Australian region on UT day 27 February. Minor Storm periods were observed in the Antarctic region. The observed disturbed conditions were caused by CIR and subsequent HSS associated with the coronal hole. Geomagnetic activity is expected to be at Unsettled to Active levels and at times reaching Minor Storm levels today, 28 February due coronal hole effects and possible minor impacts from 23/2330UT CME. A period of significant southward Bz component could produce a Major Storm period over the next 24 hours. Active conditions should continue on UT day 01 March. Then mainly Quiet to Unsettled conditions on UT day 02 March as the coronal hole effects begin to wane.
