[Ips-wgr] SWS Weekly Geo. Report (18 February 21) issued 0200 UT on 18 Feb 2021
rwc
rwc at ips.gov.au
Thu Feb 18 13:00:14 EST 2021
SUBJ: SWS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 18 FEBRUARY 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (09 FEBRUARY - 17 FEBRUARY)
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 Feb 2122 0101 3
10 Feb 2111 1001 2
11 Feb 1112 0201 3
12 Feb 1110 0222 3
13 Feb 2323 3102 8
14 Feb 1120 1000 2
15 Feb 1110 1122 3
16 Feb 2323 2311 9
17 Feb 2212 2112 5
*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 (18 FEBRUARY - 20 MARCH)
Disturbed Periods:
active to minor storm levels are expected on
21-22 February, 06-07 March, 20 March;
mild activity may be experienced on:
20 Feb, 23 Feb, 1-3 Mar, 6 Mar, 12 Mar, 15 Mar.
Best Quiet Periods:
18-19 Feb, 25-28 Feb, 3-5 Mar, 8-11 Mar, 13-14 Mar, 18 Mar.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 18-19 Feb, 25-28 Feb, 3-5 Mar, 8-14 Mar, 17-18 Mar.
Central Australian Regions:
Disturbed Periods: None.
Mildly Disturbed Periods: 21-24 Feb, 1-2 Mar, 6 Mar, 20 Mar.
Best Quiet Periods: 18-19 Feb, 25-28 Feb, 4-5 Mar, 9-11 Mar,
13-19 Mar.
Southern Australian Regions:
Disturbed Periods: 21-24 Feb, 1-2 Mar, 6 Mar, 20 Mar.
Best Quiet Periods: 18-19 Feb, 25-28 Feb, 4-5 Mar, 9-11 Mar,
13-19 Mar.
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.
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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