[Ips-wgr] ASWFC Weekly Geo. Report (22 January 26) issued 0247 UT on 22 Jan 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 22 JANUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (13 JANUARY - 21 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               
 13 Jan   2223 1011    5  
 14 Jan   0102 2123    5  
 15 Jan   2332 2322   10  
 16 Jan   3332 3433   15  
 17 Jan   3342 3333   15  In the BOM magnetometer data for 17 
                          Jan, a weak (14nT) impulse was observed 
                          at 0610UT.
 18 Jan   2322 2332   10  
 19 Jan   2112 1388   84  In the BOM magnetometer data for 19 
                          Jan, a weak (12nT) impulse was observed 
                          at 1914UT.
 20 Jan   7468 7766  115  
 21 Jan   5456 4423   34  

*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 19-20 Jan due to a Coronal Mass Ejection impact with Earth. 
G2 conditions were observed on 21-Jan. G0 were observed on other
days. G0 conditions are expected through the week 22-29 Jan.

2. FORECAST (22 JANUARY - 21 FEBRUARY)
Disturbed Periods: 
22-23 Jan,  04-07 Feb, 13-17 Feb.

Best Quiet Periods: 
25-Jan to 02-Feb, 9-10 Feb.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Mildly Disturbed Periods: 15-16 Feb.
 Best Quiet Periods: 22-Jan to 14-Feb,  17-Feb.

Central Australian Regions:
 Disturbed Periods: 15-16 Feb.
 Mildly Disturbed Periods: 23-24 Jan, 29-30 Jan, 07-14 Feb, 17-18 Feb
 Best Quiet Periods: 25-28 Jan, 01-Feb to 06-Feb.

Southern Australian Regions:
 Disturbed Periods: 22-24 Jan, 29-30 Jan, 07-18 Feb.
 Best Quiet Periods: 25-28 Jan, 01-Feb to 06-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