[Ips-wgr] ASWFC Weekly Geo. Report (12 February 26) issued 0139 UT on 12 Feb 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 12 FEBRUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (03 FEBRUARY - 11 FEBRUARY)
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               
 03 Feb   2111 0121    3  
 04 Feb   1112 2424   10  In the BOM magnetometer data for 04 
                          Feb, a weak (17nT) impulse was observed 
                          at 1505UT.
 05 Feb   4443 3122   16  
 06 Feb   2223 4432   14  
 07 Feb   3332 2223   11  
 08 Feb   2211 1122    5  
 09 Feb   2112 1212    5  
 10 Feb   1112 1123    5  
 11 Feb   3233 2332   12  

*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 this week. 

2. FORECAST (12 FEBRUARY - 14 MARCH)
Disturbed Periods: 
 16-19 Feb.

Best Quiet Periods: 
 13-14 Feb,  27 Feb to 2 Mar,  8 Mar.

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

Central Australian Regions:
 Disturbed Periods: 16 Feb.
 Mildly Disturbed Periods: 17-21 Feb, 24-26 Feb, 4-5 Mar. 
 Best Quiet Periods: 12-14 Feb,  28 Feb to 2 Mar, 7-13 Mar.

Southern Australian Regions:
 Disturbed Periods: 16-21 Feb, 24-26 Feb, 4-5 Mar. 
 Best Quiet Periods: 12-14 Feb,  28 Feb to 2 Mar, 7-13 Mar.


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