[Ips-wgr] SWS Weekly Geo. Report (26 September 19) issued 0124 UT on 26 Sep 2019
rwc
rwc at ips.gov.au
Thu Sep 26 11:24:44 EST 2019
SUBJ: SWS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 26 SEPTEMBER 2019, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (17 SEPTEMBER - 25 SEPTEMBER)
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
17 Sep 2121 0023 5
18 Sep 2122 3111 6
19 Sep 1010 2010 2
20 Sep 1100 1000 1
21 Sep 1122 2201 4
22 Sep 0100 0000 0
23 Sep 0011 0101 1
24 Sep 2221 3422 10 In the SWS magnetometer data for 24
Sep, a weak (8nT) impulse was observed
at 1311UT and a weak (6nT) impulse
was observed at 1647UT.
25 Sep 1122 0001 2
*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 (26 SEPTEMBER - 26 OCTOBER)
Disturbed Periods:
27-29 Sep, 24-26 Oct.
Best Quiet Periods:
4 Oct, 7-9 Oct, 11-12 Oct, 15-17 Oct, 19-20 Oct, 22 Oct.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 4-22 Oct.
Central Australian Regions:
Disturbed Periods: None.
Mildly Disturbed Periods: 27 Sep to 2 Oct, 24-26 Oct.
Best Quiet Periods: 8-22 Oct.
Southern Australian Regions:
Disturbed Periods: 27 Sep to 2 Oct, 24-26 Oct.
Best Quiet Periods: 8-9 Oct, 14-21 Oct.
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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