[Ips-wgr] ASWFC Weekly Geo. Report (02 April 26) issued 0049 UT on 02 Apr 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 02 APRIL 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (24 MARCH - 01 APRIL)
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               
 24 Mar   2334 3222   12  
 25 Mar   2243 1121    9  In the BOM magnetometer data for 25 
                          Mar, a weak (8nT) impulse was observed 
                          at 0631UT.
 26 Mar   1123 3411    9  
 27 Mar   2110 1212    4  
 28 Mar   2222 1212    6  
 29 Mar   2223 2312    8  
 30 Mar   2222 2221    6  
 31 Mar   1212 2111    4  
 01 Apr   2111 3212    6  In the BOM magnetometer data for 01 
                          Apr, a weak (9nT) impulse was observed 
                          at 1203UT.

*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.


Geomagnetic activity in the Australian region was at G0
conditions all week. 

2. FORECAST (02 APRIL - 02 MAY)
Disturbed Periods: 
3-4 Apr,  9-11 Apr,  16-20 Apr.

Best Quiet Periods: 
 5-7 Apr,  13-15 Apr,  23-24 Apr,  27-29 Apr.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Mildly Disturbed: 3-4 Apr, 10-11 Apr, 18-19 Apr
 Best Quiet Periods: 5-9 Apr, 21-28 Apr.

Central Australian Regions:
 Disturbed Periods: 18-19 Apr
 Mildly disturbed: 3-4 Apr, 10-11 Apr
 Best Quiet Periods: 6-9 Apr, 13-17 Apr,  22-28 Apr.

Southern Australian Regions:
 Disturbed Periods: 3-4 Apr, 10-11 Apr,  18-21 Apr.
 Best Quiet Periods: 5-8 Apr, 13-15 Apr, 24-28 Apr.


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