[Ips-wgr] SWS Weekly Geo. Report (14 December 17) issued 0242 UT on 14 Dec 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 14 DECEMBER 2017, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (05 DECEMBER - 13 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               
 05 Dec   3334 5333   20  
 06 Dec   2322 2222    8  
 07 Dec   1211 3221    6  
 08 Dec   1221 2111    4  
 09 Dec   1112 2211    4  
 10 Dec   1110 1001    1  
 11 Dec   1223 3222    8  
 12 Dec   2222 1232    7  
 13 Dec   1122 2121    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 5 Dec.   Quiet to unsettled on other days.

2. FORECAST (14 DECEMBER - 13 JANUARY)
Disturbed Periods: 
18-20 Dec,  1-4 Jan, 7-9 Jan

Best Quiet Periods: 
 14-17 Dec,  21-31 Dec,  5-6 Jan, 10-13 Jan

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: 
Quiet on all days

Central Australian Regions: 
Moderately Disturbed Period: 18-19 Dec, 01-03 Jan

Southern Australian Regions: 
Disturbed Period: 18-19 Dec, 01-03 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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