Weekly Report

(last updated 14 Oct 2021 02:01 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 14 OCTOBER 2021, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (05 OCTOBER - 13 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 05 Oct 1101 2002 2 06 Oct 1222 2221 6 07 Oct 2220 1201 4 08 Oct 1100 1001 1 09 Oct 1110 2101 2 10 Oct 1211 2224 8 11 Oct 2222 2232 8 12 Oct 4356 4333 30 In the SWS magnetometer data for 12 Oct, a weak (13nT) impulse was observed at 0226UT. 13 Oct 2100 0101 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. Minor storm on 12 Oct. Quiet to unsettled on other days. 2. FORECAST (14 OCTOBER - 13 NOVEMBER) Disturbed Periods: No strong recurrent patterns, however mild activity may be experienced on: 19-20 Oct, 25 Oct, 27-29 Oct Best Quiet Periods: 16-18 Oct, 21-24 Oct, 26 Oct, 30 Oct to 1 Nov, 3-5 Nov, 8-9 Nov. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 14 Oct to 9 Nov. Central Australian Regions: NA Southern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 14-20 Oct, 22-24 Oct, 26 Oct to 9 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.