[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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