[Ips-wgr] ASWFC Weekly Geo. Report (13 November 25) issued 0323 UT on 13 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 13 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (04 NOVEMBER - 12 NOVEMBER)
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               
 04 Nov   2112 2112    5  
 05 Nov   2232 1334   12  
 06 Nov   3453 1333   19  
 07 Nov   4444 4224   22  In the BOM magnetometer data for 07 
                          Nov, a weak (24nT) impulse was observed 
                          at 0516UT, a weak (18nT) impulse was 
                          observed at 0835UT, a weak (12nT) impulse 
                          was observed at 1133UT and a weak (11nT) 
                          impulse was observed at 2349UT.
 08 Nov   4343 4312   17  
 09 Nov   2222 1113    6  
 10 Nov   2222 3332   10  In the BOM magnetometer data for 10 
                          Nov, a weak (11nT) impulse was observed 
                          at 1332UT.
 11 Nov   1221 0103    4  In the BOM magnetometer data for 11 
                          Nov, a weak (8nT) impulse was observed 
                          at 2253UT.
 12 Nov   7757 5454   77  

*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.

G1 conditions were observed in Australia on 06-Nov, G3 conditions
were observed on 12-Nov, G0 otherwise.

2. FORECAST (13 NOVEMBER - 13 DECEMBER)
Disturbed Periods: 
14 Nov,  26-27 Nov,  4-5 Dec.

Best Quiet Periods: 
17-24 Nov,  29-30 Nov, 7 Dec.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 17-24 Nov, 29-30 Nov, 7 Dec.

Central Australian Regions:
 Disturbed Periods: 14 Nov, 26 Nov, 03-05 Dec
 Best Quiet Periods: 17-24 Nov, 29-30 Nov, 7 Dec.

Southern Australian Regions:
 Disturbed Periods: 14 Nov, 26 Nov, 03-05 Dec
 Best Quiet Periods: 17-18 Nov,  22 Nov, 8-10 Dec.


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