[Ips-wgr] ASWFC Weekly Geo. Report (07 September 23) issued 0125 UT on 07 Sep 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 07 SEPTEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (29 AUGUST - 06 SEPTEMBER)
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 Aug   1102 2102    3  
 30 Aug   1111 2011    3  
 31 Aug   1221 0222    5  
 01 Sep   2323 3222   10  
 02 Sep   3345 5333   24  
 03 Sep   3344 2212   13  
 04 Sep   2211 1211    4  
 05 Sep   1121 2432    9  
 06 Sep   2120 3211    5  

*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 conditions were observed on 02-Sep following the arrival of 
a CME associated with a solar filament eruption. Planetary Kp reached 
G3 for first K index period on 03-Sep. The Australian regional K index 
was G0 for the corresponding period. G0 conditions were observed 
on other days.

2. FORECAST (07 SEPTEMBER - 07 OCTOBER)
Disturbed Periods: No strong 27 day recurrent patterns.

Best Quiet Periods: 
 10-15 Sep, 18-27 Sep and 4-7 Oct.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: NA

Central Australian Regions: NA

Southern Australian Regions:
 Disturbed Periods: 16-17 Sep, 29 Sep.
 Best Quiet Periods: 8-14 Sep, 21-27 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