[Ips-wgr] SWS Weekly Geo. Report (25 March 21) issued 0059 UT on 25 Mar 2021

rwc rwc at ips.gov.au
Thu Mar 25 11:59:21 EST 2021


SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 25 MARCH 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (16 MARCH - 24 MARCH)
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               
 16 Mar   1000 0101    1  
 17 Mar   2200 1211    3  
 18 Mar   2111 0001    2  
 19 Mar   1111 0001    1  
 20 Mar   2444 4222   17  
 21 Mar   3221 3432   12  
 22 Mar   2212 1211    5  
 23 Mar   2222 2211    6  
 24 Mar   1222 1022    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.


Active on 20 Mar.   Quiet to unsettled on other days.

2. FORECAST (25 MARCH - 24 APRIL)
Disturbed Periods: 
16-18 Apr.

Best Quiet Periods: 
 1 Apr,  3-7 Apr,  9 Apr,  11-15 Apr.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 25-26 Mar, 6-8 Apr, 12-15 Apr, 21-23 Apr.

Central Australian Regions:
 Disturbed Periods: None.
 Mildly Disturbed Periods: 29-31 Mar, 2-4 Apr, 16-20 Apr. 
 Best Quiet Periods: 6-8 Apr, 12-15 Apr.

Southern Australian Regions:
 Disturbed Periods:  29-31 Mar, 2-4 Apr, 16-20 Apr.
 Best Quiet Periods: 6-8 Apr, 12-15 Apr.


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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