Weekly Report

(last updated 19 May 2022 00:53 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 19 MAY 2022, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (10 MAY - 18 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 10 May 0010 0102 1 11 May 1101 1112 3 12 May 1120 2121 4 13 May 1111 1022 3 14 May 2111 0211 3 15 May 3321 3311 9 16 May 1332 2111 7 17 May 1233 2221 8 18 May 2211 0201 3 *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. GO (Quiet to unsettled conditions). 2. FORECAST (19 MAY - 18 JUNE) Disturbed Periods: 24-26 May. Best Quiet Periods: 19-20 May, 29 May, 31 May to 4 Jun, 6-7 Jun. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 19 May - 18 Jun. Central Australian Regions: Mildly Disturbed Periods: 25-26 May, 11-13 Jun. Best Quiet Periods: 19-20 May, 28 May to 9 Jun. Southern Australian Regions: Disturbed Periods: 25-26 May, 11-13 Jun. Best Quiet Periods: 19-20 May, 28 May to 9 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.