[Ips-wgr] SWS Weekly Geo. Report (19 December 19) issued 0136 UT on 19 Dec 2019

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 19 DECEMBER 2019, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (10 DECEMBER - 18 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               
 10 Dec   1212 0112    4  
 11 Dec   2311 2211    6  
 12 Dec   1111 1012    3  
 13 Dec   2110 0001    2  
 14 Dec   1110 1002    2  
 15 Dec   2110 1012    3  
 16 Dec   1110 1100    1  
 17 Dec   1110 0000    1  
 18 Dec   2223 3322   10  

*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 (19 DECEMBER - 18 JANUARY)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 19-21 Dec, 14-17 Jan.

Best Quiet Periods: 
 22 Dec to 13 Jan.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 19 Dec to 18 Jan.

Central Australian Regions:
 Disturbed Periods: None.
 Moderately Disturbed Periods: 19-21 Dec, 14-17 Jan.
 Best Quiet Periods: 22 Dec to 13 Jan.

Southern Australian Regions:
 Disturbed Periods: 19-21 Dec, 14-17 Jan.
 Best Quiet Periods: 22 Dec to 13 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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