[Ips-wgr] ASWFC Weekly Geo. Report (10 July 25) issued 0103 UT on 10 Jul 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (01 JULY - 09 JULY)
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 Jul   2211 0001    2  
 02 Jul   1222 2221    6  
 03 Jul   2333 3322   12  
 04 Jul   1221 1133    7  
 05 Jul   2223 3242   11  
 06 Jul   3334 3023   13  
 07 Jul   3322 3322   11  
 08 Jul   2322 1312    8  
 09 Jul   2212 2212    6  

*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 planetary geomagnetic conditions were observed on 6 and 7-Jul.
G0 geomagnetic conditions were observed in the Australian region all week.

2. FORECAST (10 JULY - 09 AUGUST)
Disturbed Periods: 
12-13 Jul, 15-17 Jul, 22-24 Jul, 31-Jul to 3-Aug

Best Quiet Periods: 
 18-20 Jul, 26-29 Jul

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 10 Jul to 5 Aug.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 18-20 Jul, 26-29 Jul.

Southern Australian Regions:
 Disturbed Periods: 12-13 Jul, 15-17 Jul, 22-24 Jul, 31-Jul to 3-Aug
 Best Quiet Periods: 18-20 Jul, 26-29 Jul.


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