[Ips-wgr] ASWFC Weekly Geo. Report (08 May 25) issued 0216 UT on 08 May 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 08 MAY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (29 APRIL - 07 MAY)
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               
 29 Apr   0222 1111    4  
 30 Apr   2222 1112    5  
 01 May   2334 3344   18  
 02 May   3335 4433   22  
 03 May   3335 2322   16  
 04 May   3242 4433   17  
 05 May   3333 4323   15  
 06 May   3223 2233   11  
 07 May   2223 0111    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.

G1 geomagnetic activity observed over 02-03 May, with G1 level activity
observed at some sites in the Australian region over 01-04 May.

2. FORECAST (08 MAY - 07 JUNE)
Disturbed Periods: 
 8-15 May, 18-19 May, 21-22 May and 30-May to 07-Jun

Best Quiet Periods: 
 24-28 May

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: 30-May to 02-Jun
 Best Quiet Periods: 08-17 May, 22-28 May and 04-07 Jun

Central Australian Regions:
 Disturbed Periods: 13-May, 18-22 May and 29-May to 04-Jun
 Best Quiet Periods: 08-11 May, 15-16 May, 24-28 May and 06-07 Jun

Southern Australian Regions:
 Disturbed Periods: 13-May, 18-22 May and 29-May to 04-Jun
 Best Quiet Periods: 09-11 May, 15-16 May, 24-27 May and 07-Jun


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