Weekly Report

(last updated 18 Apr 2024 02:07 UT)

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 18 APRIL 2024 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (09 APRIL - 17 APRIL) 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 09 Apr 1122 2112 5 10 Apr 2221 2211 5 11 Apr 2210 0001 2 12 Apr 2220 0001 3 13 Apr 1210 0001 2 14 Apr 2121 1002 3 15 Apr 2211 0222 5 16 Apr 3233 3343 15 17 Apr 2112 0212 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. G0 geomagnetic conditions were observed over the period 09-17 Apr. 2. FORECAST (18 APRIL - 18 MAY) Disturbed Periods: No strong recurrent patterns, however mild activity may be experienced on: 19-21 Apr, 1-4 May, 16-18 May. Best Quiet Periods: 23-29 Apr, 6-14 May. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: None. Best Quiet Periods: 23-Apr to 6-May. Central Australian Regions: Disturbed Periods: 19-21 Apr and 16-18 May. Best Quiet Periods: 23-29 Apr, 6-14 May. Southern Australian Regions: Disturbed Periods: 19-21 Apr, 1-4 May and 16-18 May. Best Quiet Periods: 23-29 Apr, 6-14 May. 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.