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HomeGeophysicalSummary and ForecastsWeekly Report Friday, Feb 23 2018 08:42 UT
Summary and Forecasts

Weekly Report

(last updated 22 Feb 2018 00:38 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 22 FEBRUARY 2018, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (13 FEBRUARY - 21 FEBRUARY) 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 13 Feb 1121 0002 2 14 Feb 1010 0001 1 15 Feb 1132 2422 9 In the SWS magnetometer data for 15 Feb, a weak (8nT) impulse was observed at 0836UT. 16 Feb 3342 1122 10 In the SWS magnetometer data for 16 Feb, a weak (10nT) impulse was observed at 0758UT. 17 Feb 2332 2111 7 18 Feb 2222 3322 9 19 Feb 2322 4232 11 20 Feb 2100 2101 2 21 Feb 0022 0111 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 (22 FEBRUARY - 24 MARCH) Disturbed Periods: No strong recurrent patterns, however mild activity may be experienced on: 25 Feb, 16-18 Mar. Best Quiet Periods: 26 Feb-15 Mar, 19-23 Mar. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 26 Feb-15 Mar, 19-23 Mar. Central Australian Regions: Mildly Disturbed Periods: 25 Feb, 16-18 Mar. Best Quiet Periods: 26 Feb-15 Mar, 19-23 Mar. Southern Australian Regions: Disturbed Periods: 25 Feb, 16-18 Mar. Best Quiet Periods: 26 Feb-15 Mar, 19-23 Mar. 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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