[Ips-wgr] ASWFC Weekly Geo. Report (10 September 26) issued 0321 UT on 10 Sep 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 10 SEPTEMBER 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (01 SEPTEMBER - 09 SEPTEMBER)
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               
 01 Sep   1112 2221    5  
 02 Sep   1111 1012    3  
 03 Sep   1111 1221    4  
 04 Sep   1111 0000    1  
 05 Sep   2222 1001    4  
 06 Sep   1110 0011    1  
 07 Sep   1223 3343   13  
 08 Sep   3235 5332   21  
 09 Sep   1212 2322    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.


Active on 8 Sep.   Quiet to unsettled on other days.

2. FORECAST (10 SEPTEMBER - 10 OCTOBER)
Disturbed Periods: 
 14-16 Sep.

Best Quiet Periods: 
 13-Sep, 19-Sep to 03-Oct, 10-Oct

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 10 Sep to 6 Oct.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 10-13 Sep 18-Sep to 10-Oct.

Southern Australian Regions: NA
 Disturbed Periods: 15-17 Sep
 Best Quiet Periods: 13-Sep, 19-Sep to 03-Oct, 10-Oct

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.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au