[Ips-wgr] ASWFC Weekly Geo. Report (29 January 26) issued 0207 UT on 29 Jan 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (20 JANUARY - 28 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               
 20 Jan   7468 7766  115  
 21 Jan   5456 4423   34  
 22 Jan   3223 2224   11  
 23 Jan   3325 3432   18  
 24 Jan   3222 2232    9  
 25 Jan   2222 3322    9  
 26 Jan   1123 3332   10  
 27 Jan   2212 1232    7  
 28 Jan   2223 4434   16  

*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.

G4 geomagnetic conditions were observed in the Australian region on 20-Jan due
to a Coronal Mass Ejection Impact with Earth. 
G2 conditions were observed on 21-Jan. G1 conditions were observed on 23 Jan. G0
were observed on other days.

2. FORECAST (29 JANUARY - 28 FEBRUARY)
Disturbed Periods: 
 29-30 Jan, 06-07 Feb, 12-13 Feb, 15-20 Feb, 24-26 Feb.

Best Quiet Periods: 
 31-Jan to 05-Feb, 08-11 Feb, 14-Feb, 21-23 Feb, 27-28 Feb.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
 Northern Australian Regions:
 Mildly Disturbed Periods: 16-Feb.
 Best Quiet Periods: 29-Jan to 14-Feb, 18-28 Feb.

Central Australian Regions:
 Mildly Disturbed: 29-30 Jan, 07-14 Feb, 16-21 Feb, 24-26 Feb.
 Best Quiet Periods: 01-06 Feb, 28-Feb.

Southern Australian Regions:
 Disturbed Periods: 29-30 Jan, 07-14 Feb, 16-21 Feb, 24-26 Feb.
 Best Quiet Periods: 01-06 Feb, 28-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