Weekly Report
(last updated 03 Jul 2025 01:15 UT)
SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT ISSUED ON 03 JULY 2025 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx 1. SUMMARY (24 JUNE - 02 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 24 Jun 0222 2221 5 25 Jun 1112 2233 7 26 Jun 3332 3333 14 27 Jun 3333 3122 11 28 Jun 1233 2112 7 29 Jun 1122 2222 6 30 Jun 2223 1321 8 01 Jul 2211 0001 2 02 Jul 1222 2221 6 *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 conditions were observed in the Australian regional geomagnetic field during the week. Planetary G1 conditions were observed 26/2100-27/0300UT. The mild increase in activity was due to a coronal hole wind stream. 2. FORECAST (03 JULY - 02 AUGUST) Disturbed Periods: 4-5 Jul, 8-9 Jul, 22-23 Jul. Best Quiet Periods: 13-20 Jul, 26-28 Jul. 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: 24-25 Jul. Best Quiet Periods: 3-21 Jul. Central Australian Regions: Disturbed Periods: 23-26 Jul. Best Quiet Periods: 5-13 Jul, 20-21 Jul, 28-30 Jul. Southern Australian Regions: Disturbed Periods: 16-18 Jul, 23-26 Jul Best Quiet Periods: 5-13 Jul, 20-21 Jul, 28-30 Jul. 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.
