Weekly Report

(last updated 24 Sep 2020 02:20 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 24 SEPTEMBER 2020, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (15 SEPTEMBER - 23 SEPTEMBER) 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 15 Sep 2111 0011 2 16 Sep 0111 0010 1 17 Sep 1121 0001 2 18 Sep 1100 2110 2 19 Sep 1110 0100 1 20 Sep 0102 2102 3 21 Sep 1101 0012 2 22 Sep 1221 2100 3 23 Sep 1222 3222 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, with quiet to unsettled conditions on 23 Sep. 2. FORECAST (24 SEPTEMBER - 24 OCTOBER) Disturbed Periods: No strong recurrent patterns, however mild activity may be experienced on: 24-29 Sep, 1 Oct, 11 Oct, 21-24 Oct. Best Quiet Periods: 30 Sep, 2-10 Oct, 12-20 Oct. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 24 Sep to 24 Oct. Central Australian Regions: Mildly Disturbed Periods: 25-29 Sep, 22-24 Oct. Best Quiet Periods: 24 Sep, 30 Sep to 21 Oct. Southern Australian Regions: Disturbed Periods: 25-29 Sep, 22-24 Oct. Best Quiet Periods: 24 Sep, 30 Sep to 21 Oct. 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.