Weekly Report

(last updated 15 Jan 2026 01:56 UT)

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 15 JANUARY 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (06 JANUARY - 14 JANUARY) 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 Jan 1112 3111 5 In the BOM magnetometer data for 06 Jan, a weak (14nT) impulse was observed at 1315UT. 07 Jan 2100 1122 3 08 Jan 3343 2122 12 09 Jan 3232 2232 10 10 Jan 2232 4355 21 In the BOM magnetometer data for 10 Jan, a weak (15nT) impulse was observed at 2016UT. 11 Jan 3223 5443 20 12 Jan 2322 1223 8 13 Jan 2223 1011 5 14 Jan 0102 2123 5 *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. G1 geomagnetic conditions were observed in the Australian region this week on UT days 10 and 11-Jan. Geomagnetic activity was due to a CME arrival. 2. FORECAST (15 JANUARY - 14 FEBRUARY) Disturbed Periods: 18-21 Jan, 29 Jan, 4 Feb, 14 Feb. Best Quiet Periods: 16-17 Jan, 23 Jan, 27 Jan, 31 Jan, 2-3 Feb, 12-13 Feb. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: 18 Jan, 14 Feb. Best Quiet Periods: 15-16 Jan, 20 Jan to 12 Feb. Central Australian Regions: Disturbed Periods: 18 Jan, 14 Feb. Mildly Disturbed Periods: 19-22 Jan, 29-30 Jan, 7-11 Feb. Best Quiet Periods: 15-16 Jan, 24-27 Jan, 1-5 Feb, 12-13 Feb. Southern Australian Regions: Disturbed Periods: 18-22 Jan, 29-30 Jan, 7-11 Feb. Best Quiet Periods: 15-16 Jan, 24-27 Jan, 1-5 Feb, 12-13 Feb. 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.