[Ips-wgr] SWS Weekly Geo. Report (27 July 17) issued 0325 UT on 27 Jul 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 27 JULY 2017, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (18 JULY - 26 JULY)
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               
 18 Jul   2221 1000    3  
 19 Jul   1101 0011    1  
 20 Jul   1111 1112    3  
 21 Jul   3321 2212    8  
 22 Jul   2244 1322   12  
 23 Jul   2233 2123    9  
 24 Jul   2232 3112    8  
 25 Jul   1222 3222    7  
 26 Jul   2232 2221    7  

*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 (27 JULY - 26 AUGUST)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 28-29 Jul,  5-7 Aug,  17-22 Aug.

Best Quiet Periods: 
 30 Jul to 4 Aug,  8-16 Aug,  23-26 Aug.

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

Central Australian Regions:
 Moderately Disturbed Periods: 6-8 Aug, 17-24 Aug
 Best Quiet Periods: 27 July - 5 Aug, 9-16 Aug

Southern Australian Regions:
 Disturbed Periods: 6-8 Aug, 17-24 Aug
 Best Quiet Periods: 27 July - 5 Aug, 9-16 Aug


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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