Weekly Report

(last updated 01 Jun 2023 01:04 UT)

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 01 JUNE 2023 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (23 MAY - 31 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 23 May 2222 0033 7 24 May 2311 2232 8 25 May 2232 2121 7 26 May 2221 0211 4 27 May 1100 0011 1 28 May 2223 2022 7 29 May 1110 0001 1 30 May 0011 0012 2 31 May 1121 1132 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 conditions observed all week. 2. FORECAST (01 JUNE - 01 JULY) Disturbed Periods: 06-07 June, 16-Jun, 18-21-June. Best Quiet Periods: 01-Jun, 10-14 Jun, 22-28 Jun. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Central Australian Regions: Disturbed Periods: None. Southern Australian Regions: Disturbed Periods: 02-Jun, 04-Jun, 06-07-Jun, 16-June, 18-21-Jun. Best Quiet Periods: 01-Jun, 05-Jun, 09-16 Jun, 23-28 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.