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

Weekly Report

(last updated 19 Oct 2017 01:29 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 19 OCTOBER 2017, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (10 OCTOBER - 18 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 10 Oct 1001 0002 1 11 Oct 2244 3433 17 12 Oct 4234 4322 16 13 Oct 2424 5334 21 14 Oct 3345 4332 21 15 Oct 3324 4421 16 16 Oct 1212 2012 4 17 Oct 2113 2111 5 18 Oct 1102 1011 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. Active on 11-15 Oct. Quiet to unsettled on other days. 2. FORECAST (19 OCTOBER - 18 NOVEMBER) Disturbed Periods: 24-29 Oct, 7-11 Nov. Best Quiet Periods: 19 Oct, 22-23 Oct, 30 Oct to 6 Nov, 12-14 Nov. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Mildly Disturbed Periods: 08-09 Nov. Best Quiet Periods: 30 Oct to 6 Nov, 12-14 Nov. Central Australian Regions: Mildly Disturbed Periods: 08-09 Nov. Best Quiet Periods: 30 Oct to 6 Nov, 12-14 Nov. Southern Australian Regions: Disturbed Periods: 24-29 Oct, 7-11 Nov. Best Quiet Periods: 30 Oct to 6 Nov, 12-14 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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