[Ips-wgr] SWS Weekly Geo. Report (04 February 21) issued 0130 UT on 04 Feb 2021

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 04 FEBRUARY 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (26 JANUARY - 03 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               
 26 Jan   3312 3322   10  
 27 Jan   2222 2312    7  
 28 Jan   2110 0001    2  
 29 Jan   1111 0001    1  
 30 Jan   1100 0100    1  
 31 Jan   1000 0001    0  
 01 Feb   1100 1222    3  
 02 Feb   3433 4212   14  In the SWS magnetometer data for 02 
                          Feb, a weak (9nT) impulse was observed 
                          at 0352UT and a weak (9nT) impulse 
                          was observed at 0551UT.
 03 Feb   2222 1332    8  

*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 (04 FEBRUARY - 06 MARCH)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 7-8 Feb,  21-22 Feb,  1-2 Mar.

Best Quiet Periods: 
 5 Feb, 10-20 Feb,  24-27 Feb.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 13 Feb, 18-20 Feb, 24-27 Feb, 04-06 Mar.

Central Australian Regions: 
Mildly disturbed periods:11-12 Feb, 14-16 Feb, 22-23 Feb, 01-03 Mar.
Best Quiet Periods: 13 Feb, 18-20 Feb, 24-27 Feb, 04-06 Mar.

Southern Australian Regions:
 Disturbed Periods: 11-12 Feb, 14-16 Feb, 22-23 Feb, 01-03 Mar.
 Best Quiet Periods: 13 Feb, 18-20 Feb, 24-27 Feb, 04-06 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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