[Ips-wgr] ASWFC Weekly Geo. Report (14 August 25) issued 0228 UT on 14 Aug 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 14 AUGUST 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (05 AUGUST - 13 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               
 05 Aug   1211 2222    5  
 06 Aug   1110 0212    3  
 07 Aug   1110 0001    1  
 08 Aug   1212 3443   13  
 09 Aug   3345 4433   23  
 10 Aug   3235 3222   15  
 11 Aug   3222 3322   10  
 12 Aug   3322 2222    9  
 13 Aug   2223 3233   11  

*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 mostly observed in the Australian region
this week. G1 conditions were observed on 09 Aug and 10 Aug. 

2. FORECAST (14 AUGUST - 13 SEPTEMBER)
Disturbed Periods: 
18-22 Aug,  4-10 Sep.

Best Quiet Periods: 
 14-17 Aug,  23 Aug to 03 Sep,  11-13 Sep.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 14 Aug to 13 Sep.

Central Australian Regions:
 Mildly Disturbed Periods: 15 Aug, 19-22 Aug, 6-10 Sep.
 Best Quiet Periods: 14 Aug, 23 Aug to 5 Sep. 11-13 Sep

Southern Australian Regions:
 Disturbed Periods: 15 Aug, 19-22 Aug, 6-10 Sep.
 Best Quiet Periods: 16-18 Aug, 23 Aug to 5 Sep. 11-13 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