[Ips-wgr] ASWFC Weekly Geo. Report (26 June 25) issued 0042 UT on 26 Jun 2025 [SEC=OFFICIAL]

Australian Space Weather Forecasting Centre aswfc at bom.gov.au
Thu Jun 26 10:42:25 AEST 2025


SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 26 JUNE 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (17 JUNE - 25 JUNE)
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               
 17 Jun   1211 1222    5  
 18 Jun   2122 2212    6  
 19 Jun   2221 1033    7  
 20 Jun   1232 2220    6  
 21 Jun   1211 3212    6  
 22 Jun   3221 1121    6  
 23 Jun   2212 1111    4  
 24 Jun   0222 2221    5  
 25 Jun   1112 2233    7 

*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.


Quiet to unsettled conditions.

2. FORECAST (26 JUNE - 26 JULY)
Disturbed Periods: 
26-Jun to 1-Jul, 22-26 Jul

Best Quiet Periods: 
 8-20 Jul

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Mildly disturbed periods: 26-27 Jun
 Best Quiet Periods: 2-20 Jul

Central Australian Regions:
 Disturbed Periods: None.
 Mildly Disturbed Periods: 26-Jun to 1-Jul, 22-26 Jul
 Best Quiet Periods: 4-20 Jul

Southern Australian Regions:
 Disturbed Periods: 26-Jun to 1-Jul
 Mildly disturbed periods: 14-15 Jul, 21-Jul, 22-26 Jul
 Best Quiet Periods: 4-13 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



More information about the ips-wgr mailing list