[Ips-wgr] SWS Weekly Geo. Report (20 February 20) issued 0121 UT on 20 Feb 2020
rwc
rwc at ips.gov.au
Thu Feb 20 12:21:34 EST 2020
SUBJ: SWS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 20 FEBRUARY 2020, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (11 FEBRUARY - 19 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
11 Feb 2210 0011 2
12 Feb 1223 0001 4
13 Feb 1110 0011 1
14 Feb 2100 0001 1
15 Feb 1112 2101 3
16 Feb 2100 1001 2
17 Feb 1111 1222 4
18 Feb 1222 3333 10 A weak (7nT) impulse was observed at 1347UT
in the SWS magnetometer data.
19 Feb 2324 2211 9
*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.
Mostly quiet to unsettled conditions.
2. FORECAST (20 FEBRUARY - 21 MARCH)
Disturbed Periods:
No strong recurrent patterns, however mild activity may be experienced on:
20 Feb, 26 Feb, 4 to 6 Mar, 16 to 17 Mar.
Best Quiet Periods:
21 to 25 Feb, 27 Feb to 3 Mar, 7 to 15 Mar, 19 to 21 Mar.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Best Quiet Periods: 20 Feb to 21 Mar.
Central Australian Regions:
Best Quiet Periods: 21 Feb to 4 Mar, 7 to 21 Mar.
Mildly Disturbed Periods: 5 to 6 Mar.
Southern Australian Regions:
Best Quiet Periods: 21 Feb to 4 Mar, 7 to 21 Mar.
Disturbed Periods: 5 to 6 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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