[Ips-wgr] SWS Weekly Geo. Report (23 August 18) issued 0204 UT on 23 Aug 2018 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 23 AUGUST 2018, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (14 AUGUST - 22 AUGUST)
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               
 14 Aug   1111 1001    2  
 15 Aug   1113 4223   10  
 16 Aug   2323 2222    9  
 17 Aug   2322 1023    7  
 18 Aug   1234 3201    9  
 19 Aug   1112 1222    5  
 20 Aug   3322 3332   12  In the SWS magnetometer data for 20 
                          Aug, a weak (9nT) impulse was observed 
                          at 1447UT.
 21 Aug   2122 1101    4  
 22 Aug   1210 2101    3  

*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 observed over the previous week.
Quiet to Unsettled conditions expected for the next 7 days with 
the slight chance of Active to Minor Storm periods due to possible 
glancing blow CME 24Aug-25Aug.

2. FORECAST (23 AUGUST - 22 SEPTEMBER)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 24-25 Aug, 12-17 Sep.

Best Quiet Periods: 
 23 Aug,  26 Aug to 2 Sep,  3 - 13 Sep,  17-18 Sep.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 23 Aug to 18 Sep.

Central Australian Regions:
 Disturbed Periods: Mildly Disturbed 14Sep - 17Sep. 

Southern Australian Regions:
 Disturbed Periods: Disturbed 14Sep - 17Sep. 
 Best Quiet Periods: 23 Aug to 13 Sep


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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