Weekly Report
(last updated 05 Feb 2026 03:39 UT)
SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 05 FEBRUARY 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (27 JANUARY - 04 FEBRUARY) 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 27 Jan 2212 1232 7 28 Jan 2223 4434 16 29 Jan 3323 3333 14 30 Jan 3222 1102 6 31 Jan 1210 0011 2 01 Feb 1111 2103 4 02 Feb 3211 1012 5 03 Feb 2111 0121 3 04 Feb 1112 2424 10 In the BOM magnetometer data for 04 Feb, a weak (17nT) impulse was observed at 1505UT. *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 in the Australian region and at the planetary level for the entire week of 29-Jan to 04-Feb. 2. FORECAST (05 FEBRUARY - 07 MARCH) Disturbed Periods: 05-Feb, 07-Feb, 13-19 Feb, 24-26 Feb, 03-Mar, 05-06 Mar. Best Quiet Periods: 08-11 Feb, 22-23 Feb, 27-Feb to 02-Mar. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Mildly Disturbed Periods: 14-16 Feb. Best Quiet Periods: 05-13 Feb, 17-Feb to 07-Mar. Central Australian Regions: Disturbed Periods: 14-16 Feb. Mildly Disturbed Periods: 05-Feb, 07-13 Feb,17-21 Feb, 24-26 Feb, 06-07 Mar. Best Quiet Periods: 06-Feb, 22-23 Feb, 27-Feb to 05-Mar. Southern Australian Regions: Disturbed Periods: 05-Feb, 07-21 Feb, 24-26 Feb, 06-07 Mar. Best Quiet Periods: 06-Feb, 22-23 Feb, 27-Feb to 05-Mar. 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.
