Weekly Report
(last updated 15 Oct 2026 02:32 UT)
SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 15 OCTOBER 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (06 OCTOBER - 14 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 06 Oct 2233 3211 9 07 Oct 0110 1221 3 08 Oct 1112 2111 4 09 Oct 2123 2111 6 10 Oct 2222 4665 32 In the BOM magnetometer data for 10 Oct, a moderate (68nT) impulse was observed at 1513UT. 11 Oct 3332 3311 11 12 Oct 1221 0112 4 13 Oct 3223 2221 8 In the BOM magnetometer data for 13 Oct, a weak (13nT) impulse was observed at 0105UT. 14 Oct 2222 2222 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. G2 geomagnetic conditions were observed in the Australian region on 10-Oct due to a coronal mass ejection (CME) arrival. 2. FORECAST (15 OCTOBER - 14 NOVEMBER) Disturbed Periods: 21-24 Oct, 31 Oct to 01-Nov, 07-10 Nov. Best Quiet Periods: 15-20 Oct, 25-30 Oct, 3-4 Nov, 11-14 Nov. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 15 Oct to 14 Nov. Central Australian Regions: Mildly Disturbed Periods: 31-Oct to 01-Nov, 07 Nov, 09-11 Nov. Best Quiet Periods: 15-29 Oct, 03-05 Nov, 13-14 Nov. Southern Australian Regions: Disturbed Periods: 31-Oct to 01-Nov, 07 Nov, 09-11 Nov. Best Quiet Periods: 15-29 Oct, 03-05 Nov, 13-14 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.
