[Ips-wgr] SWS Weekly Geo. Report (13 April 17) issued 0104 UT on 13 Apr 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 13 APRIL 2017, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (04 APRIL - 12 APRIL)
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               
 04 Apr   2334 3113   12  
 05 Apr   2222 1322    7  
 06 Apr   1101 3211    4  
 07 Apr   2122 1123    6  
 08 Apr   2233 1222    8  
 09 Apr   2323 3201    8  
 10 Apr   2111 1011    3  
 11 Apr   1123 2231    7  
 12 Apr   2111 0001    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.


Quiet to unsettled conditions.

2. FORECAST (13 APRIL - 13 MAY)
Disturbed Periods: 
 17-20 Apr, 08 Apr, 23-29 Apr

Best Quiet Periods: 
 13-16 Apr,  01-04 May, 07-13 May

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: 
 Quiet Periods: 13 April - 13 May

Central Australian Regions:
 Mildly Disturbed Periods: 17-20 Apr, 08 Apr, 23-29 Apr
 Best Quiet Periods: 13-16 Apr,  01-04 May, 07-13 May

Southern Australian Regions:
 Disturbed Periods: 17-20 Apr, 08 Apr, 23-29 Apr
 Best Quiet Periods: 13-16 Apr,  01-04 May, 07-13 May


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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