[Ips-wgr] SWS Weekly Geo. Report (24 June 21) issued 0104 UT on 24 Jun 2021

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 24 JUNE 2021, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (15 JUNE - 23 JUNE)
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               
 15 Jun   1222 3233    9  
 16 Jun   3223 1212    8  
 17 Jun   1222 1100    3  
 18 Jun   1123 3001    5  
 19 Jun   1112 1000    2  
 20 Jun   1110 0001    1  
 21 Jun   1000 1001    1  
 22 Jun   1321 2000    4  
 23 Jun   1211 0000    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.


Quiet to unsettled conditions.

2. FORECAST (24 JUNE - 24 JULY)
Disturbed Periods: 12-14 July.

Best Quiet Periods: 26 June to 11 July, 21-24 July.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 26 June to 11 July, 21-24 July.

Central Australian Regions:
 Mildly Disturbed Periods: 13-15 July.
 Best Quiet Periods: 26 June to 11 July, 21-24 July.

Southern Australian Regions:
 Disturbed Periods: 13-15 July.
 Best Quiet Periods: 26 June to 11 July, 21-24 July.


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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