[Ips-wgr] ASWFC Weekly Geo. Report (29 October 26) issued 0234 UT on 29 Oct 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 29 OCTOBER 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (20 OCTOBER - 28 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               
 20 Oct   1112 2322    6  
 21 Oct   2222 2333   10  
 22 Oct   2223 3332   11  
 23 Oct   1212 3232    8  
 24 Oct   1102 2211    4  
 25 Oct   1101 1001    1  
 26 Oct   1112 2211    4  
 27 Oct   2221 1112    5  
 28 Oct   1122 0222    5  

*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.

G0 geomagnetic conditions were observed in the Australian region over 20-28 Oct.

2. FORECAST (29 OCTOBER - 28 NOVEMBER)
Disturbed Periods: 
30-31 Oct, 09-10 Nov, 17-18 Nov, 26-27 Nov.

Best Quiet Periods: 
29 Oct,  1-8 Nov,  11-15 Nov, 19-25 Nov, 28-Nov.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 29-Oct to 28-Nov.

Central Australian Regions:
 Mildly Disturbed Periods: 31-Oct, 01-Nov. 07-Nov, 09-10 Nov.
 Best Quiet Periods: 29-Oct, 3-5 Nov, 12-28 Nov.

Southern Australian Regions:
 Disturbed Periods: 31-Oct, 01-Nov. 07-Nov, 09-10 Nov.
 Best Quiet Periods: 29-Oct, 3-5 Nov, 12-28 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.

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