[Ips-wgr] ASWFC Weekly Geo. Report (02 July 26) issued 0315 UT on 02 Jul 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 02 JULY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (23 JUNE - 01 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               
 23 Jun   0001 2120    2  
 24 Jun   2122 3433   12  
 25 Jun   4432 4222   15  
 26 Jun   2221 2332    8  
 27 Jun   2210 1001    2  
 28 Jun   1211 0000    2  
 29 Jun   1100 0000    0  
 30 Jun   0104 3332   10  In the BOM magnetometer data for 30 
                          Jun, a weak (15nT) impulse was observed 
                          at 1151UT.
 01 Jul   4421 3221   12  In the BOM magnetometer data for 01 
                          Jul, a weak (11nT) impulse was observed 
                          at 1441UT.

*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 were reported in the Australian region throughout the 
entire week. Local G1 conditions were observed at Learmonth on 30-Jun, 
and also observed early on 01-July at Darwin, Townsville, Learmonth, 
and Alice Springs.

2. FORECAST (02 JULY - 01 AUGUST)
Disturbed Periods: 
03-04 Jul,  08-10 Jul, 21-23 Jul

Best Quiet Periods: 
06-07 Jul,  12-19 Jul,  25-26 Jul.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Mildly Disturbed Periods: 03-04 Jul.
 Best Quiet Periods: 02-Jul, 05-Jul to 01-Aug

Central Australian Regions:
 Disturbed Periods: 03-04 Jul.
 Mildly Disturbed Periods: 09-10 Jul, 23-24 Jul
 Best Quiet Periods: 02-Jul, 05-08 Jul, 11-20 Jul, 25-Jul to 01-Aug.

Southern Australian Regions:
 Disturbed Periods: 03-04 Jul, 09-10 Jul, 23-24 Jul
 Best Quiet Periods: 02-Jul, 05-08 Jul, 11-20 Jul, 25-Jul to 01-Aug.


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