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FORECAST SOL: Normal green MAG: Moderate yellow ION: Normal green
HomeGeophysicalSummary and ForecastsWeekly Report Saturday, Oct 20 2018 16:52 UT
Summary and Forecasts

Weekly Report

(last updated 18 Oct 2018 01:46 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 18 OCTOBER 2018, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (09 OCTOBER - 17 OCTOBER) K indices are in UT (0-24). For conversion to local time: AEST = UT + 10 hours; ACST = UT + 9.5 hours; AWST = UT + 8 hours Australian Region* Date K-INDICES A 09 Oct 1234 3322 12 10 Oct 2123 3332 10 11 Oct 2122 3221 7 12 Oct 1113 1101 4 In the SWS magnetometer data for 12 Oct, a weak (6nT) impulse was observed at 1028UT. 13 Oct 1220 2433 10 14 Oct 2112 1212 5 15 Oct 2112 3322 8 16 Oct 2112 1101 3 17 Oct 1120 0001 2 *estimated from real time 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. Quiet to unsettled conditions. 2. FORECAST (18 OCTOBER - 17 NOVEMBER) Disturbed Periods: 19-20 Oct, 3-4 Nov, 6 Nov, 9 Nov, 15-16 Nov. Best Quiet Periods: 21-25 Oct, 27 Oct to 2 Nov, 8 Nov, 10-13 Nov. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 18 Oct to 17 Nov. Central Australian Regions: Disturbed Periods: None. Mildly Disturbed Periods: 19 Oct, 3-5 Nov, 10-12 Nov, 15 Nov. Best Quiet Periods: 20 Oct to 2 Nov, 6-9 Nov, 13-14 Nov, 16-17 Nov Southern Australian Regions: Disturbed Periods: 19 Oct, 3-5 Nov, 10-12 Nov, 15 Nov. Best Quiet Periods: 20 Oct to 2 Nov, 6-9 Nov, 13-14 Nov, 16-17 Nov 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. PLEASE NOTE: Geomagnetic activity can frequently be determined by short timescale solar events that cannot be forecast a week in advance, particularly at solar maximum.

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