[Ips-wgr] SWS Weekly Geo. Report (28 March 19) issued 0157 UT on 28 Mar 2019 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 28 MARCH 2019, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (19 MARCH - 27 MARCH)
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               
 19 Mar   1112 2122    5  
 20 Mar   1112 2201    4  
 21 Mar   1110 0001    1  
 22 Mar   1110 0000    1  
 23 Mar   1001 0000    0  
 24 Mar   1000 0002    1  
 25 Mar   2111 1202    4  
 26 Mar   2210 1002    3  
 27 Mar   1222 1121    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.


Quiet to unsettled conditions.

2. FORECAST (28 MARCH - 27 APRIL)
Disturbed Periods: 
28 Mar, 12 to 13 Apr, 22 to 23 Apr.

Best Quiet Periods: 
31 Mar to 10 Apr, 15 to 20 Apr.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: NA
 Disturbed: None
 Best Quiet: 30 Mar to 20 Apr.

Central Australian Regions:
 Mildly disturbed Periods: 23 to 24 Apr 
 Best Quiet Periods: 31 Mar to 10 Apr, 17 to 20 Apr.

Southern Australian Regions:
 Disturbed Periods: 23 to 24 Apr.
 Best Quiet Periods: 31 Mar to 10 Apr, 17 to 20 Apr.


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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