[Ips-wgr] ASWFC Weekly Geo. Report (01 May 25) issued 0430 UT on 01 May 2025 [SEC=OFFICIAL]

Thu May 1 14:30:10 AEST 2025

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 01 MAY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (22 APRIL - 30 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               
 22 Apr   2221 1222    6  
 23 Apr   1212 2111    4  
 24 Apr   2233 3111    8  
 25 Apr   1110 0011    1  
 26 Apr   2112 1111    4  
 27 Apr   1211 0212    4  
 28 Apr   2101 0001    2  
 29 Apr   0222 1111    4  
 30 Apr   2222 1112    5  

*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.

Quiet to unsettled conditions.

2. FORECAST (01 MAY - 31 MAY)
Disturbed Periods: 
5-7 May,  12 May,  18-19 May.

Best Quiet Periods: 
 13 May,  20 May,  22-27 May.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 1-27 May.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 1-12 May,  14-27 May.

Southern Australian Regions:
 Disturbed Periods: 13 May,  19 May.
 Best Quiet Periods: 1 May,  5-9 May,  11 May,  14-17 May,  21-27 May.

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