[Ips-wgr] ASWFC Weekly Geo. Report (10 April 25) issued 0048 UT on 10 Apr 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 10 APRIL 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (01 APRIL - 09 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               
 01 Apr   1120 1022    3  
 02 Apr   3323 3133   12  
 03 Apr   3233 3243   14  
 04 Apr   2333 4343   17  
 05 Apr   3334 4343   19  
 06 Apr   3223 3343   14  
 07 Apr   2211 2323    8  
 08 Apr   2332 4333   14  
 09 Apr   3334 3333   16  

*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 conditions all week, with coronal hole wind streams inducing
a mild increase in geomagnetic activity during the week.


2. FORECAST (10 APRIL - 10 MAY)
Disturbed Periods: 
10-11 Apr,  22-24 Apr, 29-Apr to 03-May, 05-06 May.

Best Quiet Periods: 
 26-28 Apr

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 13-21 Apr, 27-29Apr

Central Australian Regions:
 Disturbed Periods: 23 Apr
 Best Quiet Periods: 13-21 Apr, 27-29Apr

Southern Australian Regions:
 Disturbed Periods: 23-24 Apr, 01-04 May.
 Best Quiet Periods: 13-14 Apr, 20-21 Apr, 27-28-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