Daily Report

Geomagnetic Summary

(last updated 29 Sep 2022 23:31 UT)

Geomagnetic field for Australian Region 29 Sep: G0 Estimated Indices 29 Sep : A K Australian Region 7 11232311 Cocos Island 4 01222210 Darwin 7 11232311 Townsville 9 11333312 Learmonth 8 11233321 Alice Springs 8 01333311 Gingin 4 10222211 Canberra 5 11222212 Hobart 5 10222212 Estimated Antarctic Regional K Indices 29 Sep : Macquarie Island 5 00232211 Casey 12 33432222 Mawson 16 32333244 Observed Regional daily pc3 Indices 29 Sep : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 4 (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 29 Sep : A Fredericksburg 7 Planetary 8 Observed AFr/Ap Indices 28 Sep : A K Fredericksburg 3 Planetary 2 1000 0011

Geomagnetic Forecast

(last updated 29 Sep 2022 23:31 UT)

Date Ap Conditions 30 Sep 16 G0, chance of G1 01 Oct 30 G1 02 Oct 25 G0-G1 COMMENT: ASWFC Geomagnetic Warning 45 was issued on 28 September and is current for 30 Sep to 2 Oct. G0 geomagnetic conditions were observed in the Australian and Antarctic region on 28-Sep. Generally G0 geomagnetic conditions are expected for 30 Sep with a chance for G1 periods. Geomagnetic 27 day recurrence patterns suggest that G1 conditions are likely during the interval 01-02 Oct due to a coronal hole high speed wind stream. Also, there is chance of a weak CME arrival late on 01-Oct associated with a solar filament eruption.