[Ips-wgr] SWS Weekly Geo. Report (26 August 21) issued 0338 UT on 26 Aug 2021

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 26 AUGUST 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (17 AUGUST - 25 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               
 17 Aug   1112 1101    3  
 18 Aug   1211 2110    3  
 19 Aug   0102 2211    3  
 20 Aug   0122 2211    4  
 21 Aug   0121 1000    2  
 22 Aug   1110 1101    2  
 23 Aug   1110 0000    1  
 24 Aug   1111 0022    3  
 25 Aug   2221 1210    4  

*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 (26 AUGUST - 25 SEPTEMBER)
Disturbed Periods: 
Up to active levels on 26 and 27 Aug.

Best Quiet Periods: 
 28 Aug, 30 Aug to 10 Sep,  12 to 21 Sep

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: 
Disturbed Periods: None.
 Best Quiet Periods: 27 Aug to 22 Sep.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 27 Aug to 22 Sep.

Southern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 27 Aug to 22 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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