Weekly Report

(last updated 16 Aug 2018 02:18 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 16 AUGUST 2018, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (07 AUGUST - 15 AUGUST) 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 07 Aug 2322 3221 8 08 Aug 1212 1101 3 09 Aug 1111 1010 2 10 Aug 1110 0101 1 11 Aug 1232 2323 9 12 Aug 1112 2001 3 13 Aug 1111 1001 2 14 Aug 1111 1001 2 15 Aug 1113 4223 10 *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. Quiet to unsettled conditions. 2. FORECAST (16 AUGUST - 15 SEPTEMBER) Disturbed Periods: 16 Aug. Best Quiet Periods: 22 Aug to 2 Sep, 4-6 Sep, 8-11 Sep. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Mildly disturbed Periods: None. Best Quiet Periods: 22 Aug to 11 Sep. Central Australian Regions: Mildly disturbed Periods: 16 Aug, 20-21 Aug. Best Quiet Periods: 22 Aug to 11 Sep. Southern Australian Regions: Disturbed Periods: 16 Aug, 20-21 Aug. Best Quiet Periods: 22 Aug to 11 Sep. 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.