Weekly Report
(last updated 30 Oct 2025 01:09 UT)
SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 30 OCTOBER 2025 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (21 OCTOBER - 29 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 21 Oct 2210 0122 4 22 Oct 1111 1122 4 23 Oct 2100 1122 3 24 Oct 2322 2232 9 25 Oct 2331 2001 6 26 Oct 1122 0111 3 27 Oct 1110 1222 4 28 Oct 2332 4233 13 29 Oct 2222 3333 11 *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. G0 geomagnetic conditions were observed this week. 2. FORECAST (30 OCTOBER - 29 NOVEMBER) Disturbed Periods: 30 Oct, 7-9 Nov, 14-15 Nov, 24-26 Nov. Best Quiet Periods: 2 Nov, 5 Nov, 12 Nov, 18-19 Nov, 22-23 Nov, 29 Nov. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Mildly Disturbed Periods: 8 Nov. Best Quiet Periods: 1-6 Nov, 10-29 Nov. Central Australian Regions: Disturbed Periods: 8 Nov. Mildly Disturbed Periods: 30-Oct, 9-11 Nov, 15-16 Nov, 20 Nov, 26 Nov. Best Quiet Periods: 1-6 Nov, 13 Nov, 18 Nov, 22-24 Nov, 28-29 Nov. Southern Australian Regions: Disturbed Periods: 30-Oct, 9-11 Nov, 15-16 Nov, 20 Nov, 26 Nov. Best Quiet Periods: 1-6 Nov, 13 Nov, 18 Nov, 22-24 Nov, 28-29 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.
