[Ips-wgr] SWS Weekly Geo. Report (19 August 21) issued 0202 UT on 19 Aug 2021
rwc at ips.gov.au
Thu Aug 19 12:02:03 EST 2021
SUBJ: SWS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 19 AUGUST 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (10 AUGUST - 18 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
Date K-INDICES A
10 Aug 2211 2111 4
11 Aug 2221 1001 3
12 Aug 0110 1112 2
13 Aug 1122 0101 3
14 Aug 1110 0101 1
15 Aug 2233 1122 8
16 Aug 2121 2201 4
17 Aug 1112 1101 3
18 Aug 1211 2110 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 (19 AUGUST - 18 SEPTEMBER)
No strong recurrent patterns, however mild activity may be experienced on:
20-21 Aug, 24-25 Aug, 29-30 Aug, 3 Sep, 11 Sep, 17-18 Sep
Best Quiet Periods:
19 Aug, 22-23 Aug, 26-28 Aug, 31 Aug to 2 Sep, 4-10 Sep, 12-16 Sep
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 19 Aug to 18 Sep.
Central Australian Regions:
Mildly Disturbed Periods: 25 Aug.
Best Quiet Periods: 19-24 Aug, 26 Aug to 18 Sep.
Southern Australian Regions:
Disturbed Periods: 25 Aug.
Best Quiet Periods: 19-23 Aug, 27 Aug to 18 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
Geomagnetic activity can frequently be determined by short timescale
solar events that cannot be forecast a week in advance, particularly
at solar maximum.
Space Weather Services email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386 WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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