Weekly Report
(last updated 25 Jul 2024 01:28 UT)
SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 25 JULY 2024 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (16 JULY - 24 JULY) 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 16 Jul 2222 2211 6 17 Jul 2220 1011 3 18 Jul 1111 1001 2 19 Jul 1110 0111 2 20 Jul 2221 0011 3 21 Jul 1100 1111 2 22 Jul 2123 1131 7 In the BOM magnetometer data for 22 Jul, a weak (9nT) impulse was observed at 1105UT. 23 Jul 1110 0021 2 24 Jul 2221 1001 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. Quiet to unsettled conditions. 2. FORECAST (25 JULY - 24 AUGUST) Disturbed Periods: No strong recurrent patterns, however mild activity may be experienced on: 26-Jul, 28-Jul, 03-04 Aug, 11-12 Aug. Best Quiet Periods: 28-30 Jul, 5-10 Aug, 13-17 Aug, 19 Aug. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 28-30 Jul, 02-Aug, 05-010 Aug, 13-17 Aug, 19-Aug. Central Australian Regions: Disturbed Periods: None. Mildly Disturbed Periods: 11-12 Aug. Best Quiet Periods: 02-Aug, 05-10 Aug, 13-17 Aug, 19-Aug. Southern Australian Regions: Disturbed Periods: None. Mildly Disturbed Periods: 26-Jul, 28-Jul, 03-04 Aug, 11-12 Aug. Best Quiet Periods: 29-30 Jul, 05-10 Aug, 13-17 Aug. 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.
