Weekly Report

(last updated 28 Feb 2019 01:44 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 28 FEBRUARY 2019, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (19 FEBRUARY - 27 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 19 Feb 1110 0100 1 20 Feb 1110 1212 3 21 Feb 2232 2212 7 22 Feb 1111 1101 2 23 Feb 0110 0111 1 24 Feb 1110 1000 1 25 Feb 1100 0001 1 26 Feb 0001 0101 1 27 Feb 0011 3323 7 *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 (28 FEBRUARY - 30 MARCH) Disturbed Periods: 28 Feb. Best Quiet Periods: 3-10 Mar, 14-18 Mar, 21-25 Mar. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed periods: None. Best Quiet periods:3-11 Mar, 14-18 Mar, 21-25 March Central Australian Regions: Mildly disturbed: 28 Feb-2 Mar. Best Quiet periods: 3-11 Mar, 14-18 Mar, 21-25 Mar. Southern Australian Regions: Disturbed Periods: 28 Feb- 2 Mar. Best Quiet Periods: 3-11 Mar, 14-18 Mar, 21-25 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.