[Ips-wgr] SWS Weekly Geo. Report (30 December 21) issued 0102 UT on 30 Dec 2021

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 30 DECEMBER 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (21 DECEMBER - 29 DECEMBER)
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               
 21 Dec   3121 3121    7  
 22 Dec   2221 3222    7  
 23 Dec   2111 0011    2  
 24 Dec   1112 0122    4  
 25 Dec   1122 3111    5  
 26 Dec   1101 0011    1  
 27 Dec   1124 4322   12  A weak (13nT) impulse was observed at 0937UT in
                          the SWS magnetometer data on 27 Dec.
 28 Dec   1221 1201    4  
 29 Dec   1212 2223    7  

*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 (30 DECEMBER - 29 JANUARY)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 30 Dec,  1 to 2 Jan,  15 to 16 Jan,  23 Jan.

Best Quiet Periods: 
 3 to 14 Jan,  19 to 22 Jan,  24 Jan.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 4 to 10 Jan, 13 to 15 Jan, 20 to 25 Jan.

Central Australian Regions:
 Mildly Disturbed Periods: 11 to 12 Jan, 16 to 19 Jan.
 Best Quiet Periods: 4 to 10 Jan, 13 to 15 Jan, 20 to 25 Jan.

Southern Australian Regions:
 Disturbed Periods: 11 to 12 Jan, 16 to 19 Jan.
 Best Quiet Periods: 4 to 10 Jan, 13 to 15 Jan, 20 to 25 Jan.


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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