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HomeGeophysicalSummary and ForecastsWeekly Report Monday, May 01 2017 00:23 UT
Summary and Forecasts

Weekly Report

(last updated 27 Apr 2017 02:59 UT)

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT ISSUED ON 27 APRIL 2017, BY Space Weather Services, FROM THE AUSTRALIAN SPACE FORECAST CENTRE 1. SUMMARY (18 APRIL - 26 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 18 Apr 1011 1112 3 19 Apr 2321 0222 6 20 Apr 3434 4321 17 21 Apr 1210 2333 8 22 Apr 3346 4533 30 23 Apr 3355 5332 26 24 Apr 2334 3232 13 25 Apr 2223 3221 8 26 Apr 2222 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. Active on 20 Apr, 22-23 Apr. Quiet to unsettled on other days. 2. FORECAST (27 APRIL - 27 MAY) Disturbed Periods: 6 May, 16 - 21 May Best Quiet Periods: 02 - 05 May, 7 May - 15 May, 22 May - 27 May 3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS Northern Australian Regions: Disturbed Periods: 19-21 May Best Quiet Periods: 29 April - 3 May, 7-16 May Central Australian Regions: Disturbed - Mildly disturbed Periods: 27 - 28 April, 4 - 6 May, 17 - 24 May Best Quiet Periods: 29 April - 3 May, 7-16 May Southern Australian Regions: Disturbed Periods: 27 - 28 April, 4 - 6 May, 17 - 24 May Best Quiet Periods: 29 April - 3 May, 7-16 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.

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