Weekly Report

(last updated 06 Nov 2025 01:41 UT)

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 06 NOVEMBER 2025 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (28 OCTOBER - 05 NOVEMBER) 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 28 Oct 2332 4233 13 29 Oct 2222 3333 11 30 Oct 3335 5433 24 31 Oct 3334 3322 14 01 Nov 2223 3222 9 02 Nov 2213 2322 8 03 Nov 2233 3423 13 04 Nov 2112 2112 5 05 Nov 2232 1334 12 *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. G2 geomagnetic activity is expected on 06-Nov, with a chance of G3. G3 activity is expected on 07-Nov. G1 activity is expected on 08-Nov. G1 activity is possible on 09-Nov. This anticipated activity is due to ongoing coronal hole high speed wind stream effects combined with an anticipated CME impact on 07-Nov at 0200UT +/- 9 hours. G0 conditions are currently expected over 10-12 Nov. 2. FORECAST (06 NOVEMBER - 06 DECEMBER) Disturbed Periods: 06-09 Nov, 13-15 Nov, 24-30 Nov and 02-04 Dec. Best Quiet Periods: 11-12 Nov, 17-23 Nov, 01-Dec and 06-Dec. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: 06-08 Nov. Best Quiet Periods: 10-26 Nov, 28-Nov to 02-Dec, 06-Dec. Central Australian Regions: Disturbed Periods: 06-10 Nov, 16-Nov, 27-28 Nov, 04-05 Dec. Best Quiet Periods: 12-15 Nov, 17-26 Nov, 30-Nov to 02 Dec. Southern Australian Regions: Disturbed Periods: 06-11 Nov, 14-17 Nov, 20-Nov, 25-29 Nov, 03-05 Dec. Best Quiet Periods: 13-Nov, 19-Nov, 21-24 Nov and 01-Dec. 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.