Weekly Report

(last updated 05 Dec 2019 01:29 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 05 DECEMBER 2019, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (26 NOVEMBER - 04 DECEMBER) 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 26 Nov 1110 0112 2 27 Nov 1111 1211 3 28 Nov 1110 1121 3 29 Nov 2211 1122 5 30 Nov 2222 1122 6 01 Dec 1110 1112 3 02 Dec 1110 0001 1 03 Dec 1110 0001 1 04 Dec 2211 0000 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 conditions observed 26 Nov to 04 Dec. 2. FORECAST (05 DECEMBER - 04 JANUARY) Disturbed Periods: No strong recurrent patterns, however mild activity may be experienced on: 08 Dec, 18 Dec-21 Dec, 04 Jan. Best Quiet Periods: 05 Dec-07 Dec, 10 Dec-17 Dec, 23 Dec-03 Jan. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 05 Dec-04 Jan. Central Australian Regions: Mildly Disturbed Periods: 18 Dec-20 Dec. Best Quiet Periods: 05 Dec-16 Dec, 22 Dec-04 Jan. Southern Australian Regions: Disturbed Periods: 18 Dec-20 Dec. Best Quiet Periods: 05 Dec-16 Dec, 22 Dec-04 Jan. 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.