Geophysical
FORECAST SOL: Moderate yellow MAG: Disturbed red ION: Normal green
HomeGeophysicalSummary and ForecastsDaily Report Sunday, Oct 22 2017 12:09 UT
Summary and Forecasts

Daily Report

Geomagnetic Summary

(last updated 21 Oct 2017 23:30 UT)

Geomagnetic field for Australian Region 21 Oct: Quiet Estimated Indices 21 Oct : A K Australian Region 7 11223222 Cocos Island 4 01222211 Darwin 6 11223212 Townsville 8 12223232 Learmonth 8 11233222 Alice Springs 6 11223212 Norfolk Island 6 11222123 Culgoora 6 11222222 Gingin 5 10222222 Camden 6 11222222 Canberra 7 11223222 Launceston 10 11333232 Hobart 7 11223222 Estimated Antarctic Regional K Indices 21 Oct : Macquarie Island 10 01244221 Casey 12 23422233 Mawson 14 23323343 Davis 11 22333232 Observed Regional daily pc3 Indices 21 Oct : Darwin 0 (Quiet) Townsville 0 (Quiet) Learmonth 0 (Quiet) Alice Springs 0 (Quiet) Gingin 2 (Quiet) Canberra 7 (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 21 Oct : A Fredericksburg 8 Planetary 10 Observed AFr/Ap Indices 20 Oct : A K Fredericksburg 5 Planetary 8 3232 2112

Geomagnetic Forecast

(last updated 21 Oct 2017 23:30 UT)

Date Ap Conditions 22 Oct 8 Quiet to Unsettled 23 Oct 4 Quiet 24 Oct 30 Active to Minor Storm COMMENT: The magnetic field over Australia was mostly at Quiet levels with isolated periods of Unsettled levels during the UT day, 21 October. The Antarctic region was at Quiet to Unsettled levels with isolated periods of Active conditions. Expect Quiet to Unsettled conditions to prevail for the next two days and Unsettled to Active conditions with isolated periods of Minor Storm levels on 24 October due to the recurrent coronal hole becoming geoeffective. In the SWS magnetometer data at 21/0611UT a weak (8nT) impulse was observed.

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