[Ips-wgr] ASWFC Weekly Geo. Report (01 January 26) issued 0054 UT on 01 Jan 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 01 JANUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (23 DECEMBER - 31 DECEMBER)
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               
 23 Dec   2333 4333   15  
 24 Dec   3333 3333   15  
 25 Dec   2232 2212    7  
 26 Dec   1222 2211    5  
 27 Dec   2221 1122    5  
 28 Dec   2212 2312    7  
 29 Dec   2223 2112    7  
 30 Dec   2222 2212    6  
 31 Dec   2232 4211    9  

*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 during the past week. A mild increase in geomagnetic 
activity was observed 23-24 Dec and 31-Dec.

2. FORECAST (01 JANUARY - 31 JANUARY)
Disturbed Periods: 
2-3 Jan,  6-8 Jan,  17-19 Jan. 

Best Quiet Periods: 
 5 Jan,  10-11 Jan,  15-Jan,  22-26 Jan.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Mildly disturbed:  2-3 Jan,18-Jan
 Best Quiet Periods: 4-17Jan, 19-31 Jan.

Central Australian Regions:
 Disturbed Periods:  2-3 Jan,17-20 Jan
 Best Quiet Periods: 4-8 Jan, 24-27 Jan.

Southern Australian Regions:
 Disturbed Periods: 2-3 Jan,10-Jan, 12-15 Jan, 17-22 Jan,
 Best Quiet Periods: 5-8 Jan, 24-27 Jan.


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