[Ips-wgr] IPS Weekly Geo. Report (21 April 16) issued 0222 UT on 21 Apr 2016 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 21 APRIL 2016, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (12 APRIL - 20 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               
 12 Apr   2212 3343   12  
 13 Apr   3233 3332   13  
 14 Apr   2225 5432   20  
 15 Apr   2101 1111    3  
 16 Apr   1123 2433   11  
 17 Apr   3322 2332   11  
 18 Apr   3221 0011    4  
 19 Apr   0000 0000    0  
 20 Apr   0112 0000    1  

*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 14 Apr.   Quiet to unsettled on other days.

2. FORECAST (21 APRIL - 21 MAY)
Disturbed Periods: 
29 Apr,  9-10 May.

Best Quiet Periods: 
 21-22 Apr,  27-28 Apr,  1 May,  3 May,  6-8 May,  12 May,  15-17 May.

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

Central Australian Regions: Quiet, chance of mildly disturbed 
			    conditions 22Apr-23Apr

Southern Australian Regions: Quiet chance of disturbed conditions 
			     22Apr-23Apr 


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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