[Ips-wgr] SWS Weekly Geo. Report (22 July 21) issued 0112 UT on 22 Jul 2021
rwc
rwc at ips.gov.au
Thu Jul 22 11:12:25 EST 2021
SUBJ: SWS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 22 JULY 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (13 JULY - 21 JULY)
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
13 Jul 1101 0000 1
14 Jul 0112 3432 9 In the SWS magnetometer data for 14
Jul, a weak (8nT) impulse was observed
at 1006UT.
15 Jul 1222 2221 6
16 Jul 1100 0010 1
17 Jul 1110 1110 2
18 Jul 1000 1101 1
19 Jul 2130 1111 4
20 Jul 2233 1231 9
21 Jul 2211 1210 4
*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 (22 JULY - 21 AUGUST)
Disturbed Periods: 27 July, 10 August.
Best Quiet Periods: 25-26 July, 29 July to 9 August, 12-21 August.
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 25 July to 21 August.
Central Australian Regions:
Mildly Disturbed Periods: None.
Best Quiet Periods: 25 July to 21 August.
Southern Australian Regions:
Disturbed Periods: None.
Best Quiet Periods: 25 July to 21 August.
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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