[Ips-wgr] SWS Weekly Geo. Report (21 October 21) issued 0055 UT on 21 Oct 2021

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 21 OCTOBER 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (12 OCTOBER - 20 OCTOBER)
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               
 12 Oct   4356 4333   30  In the SWS magnetometer data for 12 
                          Oct, a weak (13nT) impulse was observed 
                          at 0226UT.
 13 Oct   2100 0101    2  
 14 Oct   2212 2122    6  
 15 Oct   2222 0002    4  
 16 Oct   2122 0211    4  
 17 Oct   1222 2232    7  
 18 Oct   1121 2223    6  
 19 Oct   2212 2442   11  
 20 Oct   2201 2212    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.


Minor storm on 12 Oct.  Quiet to unsettled on other days.

2. FORECAST (21 OCTOBER - 20 NOVEMBER)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 21-22 Oct,  25 Oct,  27-29 Oct, 13 Nov.

Best Quiet Periods: 
 23-24 Oct,  26 Oct,  30 Oct to 1 Nov,  3-5 Nov,  8-12 Nov.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 23 Oct to 15 Nov.

Central Australian Regions: 
 Mildly Disturbed Periods: None.
 Best Quiet Periods: 23 Oct to 15 Nov.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 23 Oct to 15 Nov.


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 

IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information.  The views expressed in 
this message are those of the individual sender, unless 
specifically stated to be the views of SWS.  If you are not 
the intended recipient, please contact the sender immediately 
and delete all copies of this e-mail and attachments. 
To unsubscribe from an IPS mail list either send an email to 
"MAIL_LIST"-leave at ips.gov.au or go to
http://www.sws.bom.gov.au/mailman/listinfo/"MAIL_LIST".
Information about training can be obtained from
http://www.sws.bom.gov.au/mailman/listinfo/ips-training.
General information is available from
http://www.sws.bom.gov.au/mailman/listinfo/ips-info.