Weekly Report

(last updated 14 May 2026 02:23 UT)

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 14 MAY 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (05 MAY - 13 MAY) 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 05 May 3221 0000 4 06 May 0110 0000 0 07 May 0100 0332 5 In the BOM magnetometer data for 07 May, a weak (11nT) impulse was observed at 1622UT. 08 May 2122 2222 6 09 May 2111 0111 3 10 May 1110 0011 1 11 May 1111 1111 3 12 May 0110 0011 1 13 May 1111 2222 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. G0 geomagnetic conditions were observed in the Australian region this week. 2. FORECAST (14 MAY - 13 JUNE) Disturbed Periods: 15-18 May, 4 Jun, 9 Jun, 11-13 Jun. Best Quiet Periods: 19-21 May, 24-26 May, 29 May, 2-3 Jun, 5-8 Jun, 10 Jun. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: N/A Central Australian Regions: Mildly Disturbed Periods: 18 May, 4 Jun Best Quiet Periods: 14-16 May, 20 May to 02 Jun, 06-12 Jun. Southern Australian Regions: Disturbed Periods: 18 May, 4 Jun Best Quiet Periods: 14-16 May, 20 May to 02 Jun, 06-12 Jun. 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.