[Ips-wgr] SWS Weekly Geo. Report (18 January 18) issued 0245 UT on 18 Jan 2018 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 18 JANUARY 2018, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (09 JANUARY - 17 JANUARY)
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               
 09 Jan   2211 3212    6  
 10 Jan   1121 1101    3  
 11 Jan   0110 1012    2  
 12 Jan   1212 1202    4  
 13 Jan   1022 3233    8  In the SWS magnetometer data for 13 
                          Jan, a weak (9nT) impulse was observed 
                          at 1251UT.
 14 Jan   3321 2202    7  
 15 Jan   2222 1212    6  
 16 Jan   2122 1011    4  
 17 Jan   1111 1001    2  

*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.


Mostly quiet to unsettled conditions. Isolated active periods observed on 14
Jan.

2. FORECAST (18 JANUARY - 17 FEBRUARY)
Disturbed Periods: 
No strong recurrent patterns, however mild to moderate activity may be
experienced on:
 19-22 Jan,  28 Jan,  4 Feb,  10 Feb.

Best Quiet Periods: 
 18 Jan,  23-27 Jan,  29 Jan to 3 Feb,  5-9 Feb,  11-14 Feb.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: No disturbance expected.

Central Australian Regions: Mildly disturbed on 5 Feb and 10 Feb.

Southern Australian Regions:
 Disturbed Periods: 5 Feb and 10 Feb.
 Best Quiet Periods: 18 Jan to 4 Feb, 6-9 Feb, 11-14 Feb.


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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