[Ips-wgr] ASWFC Weekly Geo. Report (15 January 26) issued 0156 UT on 15 Jan 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 15 JANUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (06 JANUARY - 14 JANUARY)
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               
 06 Jan   1112 3111    5  In the BOM magnetometer data for 06 
                          Jan, a weak (14nT) impulse was observed 
                          at 1315UT.
 07 Jan   2100 1122    3  
 08 Jan   3343 2122   12  
 09 Jan   3232 2232   10  
 10 Jan   2232 4355   21  In the BOM magnetometer data for 10 
                          Jan, a weak (15nT) impulse was observed 
                          at 2016UT.
 11 Jan   3223 5443   20  
 12 Jan   2322 1223    8  
 13 Jan   2223 1011    5  
 14 Jan   0102 2123    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.

G1 geomagnetic conditions were observed in the Australian region this
week on UT days 10 and 11-Jan. Geomagnetic activity was due to a CME
arrival. 

2. FORECAST (15 JANUARY - 14 FEBRUARY)
Disturbed Periods: 
 18-21 Jan,  29 Jan,  4 Feb, 14 Feb.

Best Quiet Periods: 
 16-17 Jan,  23 Jan,  27 Jan,  31 Jan,  2-3 Feb, 12-13 Feb.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: 18 Jan, 14 Feb.
 Best Quiet Periods: 15-16 Jan, 20 Jan to 12 Feb.

Central Australian Regions:
 Disturbed Periods: 18 Jan, 14 Feb.
 Mildly Disturbed Periods: 19-22 Jan, 29-30 Jan, 7-11 Feb.
 Best Quiet Periods: 15-16 Jan, 24-27 Jan, 1-5 Feb, 12-13 Feb.

Southern Australian Regions:
 Disturbed Periods: 18-22 Jan, 29-30 Jan, 7-11 Feb.
 Best Quiet Periods: 15-16 Jan, 24-27 Jan, 1-5 Feb, 12-13 Feb.

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