From aswfc at bom.gov.au  Thu Feb  5 14:39:38 2026
From: aswfc at bom.gov.au (Australian Space Weather Forecasting Centre)
Date: Thu, 05 Feb 2026 14:39:38 +1100
Subject: [Ips-wgr] ASWFC Weekly Geo. Report (05 February 26) issued 0339 UT
 on 05 Feb 2026 [SEC=OFFICIAL]
Message-ID: <698410fa.CR7DzucYbQ0qFCEn%aswfc@bom.gov.au>

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 05 FEBRUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (27 JANUARY - 04 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               
 27 Jan   2212 1232    7  
 28 Jan   2223 4434   16  
 29 Jan   3323 3333   14  
 30 Jan   3222 1102    6  
 31 Jan   1210 0011    2  
 01 Feb   1111 2103    4  
 02 Feb   3211 1012    5  
 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.

*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 
and at the planetary level for the entire week of 29-Jan to 04-Feb.

2. FORECAST (05 FEBRUARY - 07 MARCH)
Disturbed Periods: 
05-Feb, 07-Feb, 13-19 Feb,  24-26 Feb,  03-Mar, 05-06 Mar. 

Best Quiet Periods: 
08-11 Feb, 22-23 Feb,  27-Feb to 02-Mar.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Mildly Disturbed Periods: 14-16 Feb.
 Best Quiet Periods: 05-13 Feb,  17-Feb to 07-Mar.

Central Australian Regions:
 Disturbed Periods: 14-16 Feb.
 Mildly Disturbed Periods: 05-Feb, 07-13 Feb,17-21 Feb, 24-26 Feb, 
 06-07 Mar. 
 Best Quiet Periods: 06-Feb, 22-23 Feb, 27-Feb to 05-Mar.

Southern Australian Regions:
 Disturbed Periods: 05-Feb, 07-21 Feb, 24-26 Feb, 06-07 Mar.
 Best Quiet Periods: 06-Feb, 22-23 Feb, 27-Feb to 05-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