[Ips-wgr] SWS Weekly Geo. Report (26 September 19) issued 0124 UT on 26 Sep 2019
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
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)
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
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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