Weekly Report

(last updated 17 Aug 2017 02:17 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 17 AUGUST 2017, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (08 AUGUST - 16 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 08 Aug 1110 1111 2 09 Aug 1111 1001 2 10 Aug 1111 1101 2 11 Aug 1201 1231 5 12 Aug 3321 2022 7 13 Aug 2221 1111 4 14 Aug 1111 1111 3 15 Aug 1110 0000 1 16 Aug 2111 1211 4 *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 for the previous week. Active conditions likely early in the week 17Aug-25Aug due to coronal hole effects. 2. FORECAST (17 AUGUST - 16 SEPTEMBER) Disturbed Periods: 17-22 Aug, 1 Sep. Best Quiet Periods: 23-29 Aug, 3-6 Sep, 9-12 Sep. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None Best Quiet Periods: 17Aug-16Sep. Central Australian Regions: Disturbed Periods: Mildly Disturbed 17Aug-22Aug Best Quiet Periods: 23-30 Aug, 4-12 Sep. Southern Australian Regions: Disturbed Periods: 17Aug-22Aug, 31Aug-03Sep Best Quiet Periods: 23-30 Aug, 5-7 Sep, 9-12 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.