[Ips-wgr] ASWFC Weekly Geo. Report (07 August 25) issued 0146 UT on 07 Aug 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 07 AUGUST 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (29 JULY - 06 AUGUST)
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 Jul   1232 0001    4  
 30 Jul   1102 2221    4  
 31 Jul   2112 2211    5  
 01 Aug   2221 3122    7  
 02 Aug   2211 1222    5  
 03 Aug   1110 1231    4  
 04 Aug   1122 2222    6  
 05 Aug   1211 2222    5  
 06 Aug   1110 0212    3  

*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
this week. 

2. FORECAST (07 AUGUST - 06 SEPTEMBER)
Disturbed Periods: 
 8-14 Aug,  18-22 Aug, 4-6 Sep.

Best Quiet Periods: 
 15-17 Aug,  23 Aug to 3 Sep.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 7 Aug to 6 Sep.

Central Australian Regions:
 Mildly Disturbed Periods: 9-15 Aug, 19-22 Aug, 5-6 Sep.
 Best Quiet Periods: 7 Aug, 17 Aug, 24 Aug to 3 Sep.

Southern Australian Regions:
 Disturbed Periods: 9-15 Aug, 19-22 Aug, 5-6 Sep.
 Best Quiet Periods: 7 Aug, 17 Aug, 24 Aug to 3 Sep.

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