[Ips-wgr] SWS Weekly Geo. Report (25 October 18) issued 0155 UT on 25 Oct 2018 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 25 OCTOBER 2018, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (16 OCTOBER - 24 OCTOBER)
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               
 16 Oct   2112 1101    3  
 17 Oct   1120 0001    2  
 18 Oct   1100 0000    0  
 19 Oct   1100 0000    0  
 20 Oct   1100 1001    1  
 21 Oct   1112 3112    5  
 22 Oct   2220 2111    4  
 23 Oct   1111 1001    2  
 24 Oct   1112 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.


Mainly Quiet conditions through the period with some Unsettled periods on 21
October.

2. FORECAST (25 OCTOBER - 24 NOVEMBER)
Disturbed Periods: 
4 Nov.

Best Quiet Periods: 
 26 Oct to 2 Nov,  8 Nov,  10-20 Nov.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 25 Oct to 20 Nov.

Central Australian Regions:
 Disturbed Periods: Mildly disturbed 04 to 05 Nov, 10 to 12 Nov.
 Best Quiet Periods: 25 Oct to 03 Nov, 06 to 09 Nov, 13 to 20 Nov.

Southern Australian Regions:
 Disturbed Periods: Disturbed 04 to 05 Nov, 10 to 12 Nov.
 Best Quiet Periods: 25 Oct to 03 Nov, 06 to 09 Nov, 13 to 20 Nov.


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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