[Ips-wgr] ASWFC Weekly Geo. Report (24 August 23) issued 0205 UT on 24 Aug 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 24 AUGUST 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (15 AUGUST - 23 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               
 15 Aug   1110 0002    2  
 16 Aug   1211 2221    5  
 17 Aug   2210 1211    4  
 18 Aug   2332 1122    8  
 19 Aug   1111 1132    5  
 20 Aug   2212 1012    4  
 21 Aug   2232 3111    7  
 22 Aug   2221 2001    4  
 23 Aug   1100 0002    1  

*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 observed in the Australian region
over 15-23 Aug.

2. FORECAST (24 AUGUST - 23 SEPTEMBER)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 26-28 Aug, 31-Aug to 4-Sep, 14-Sep, and 17-Sep

Best Quiet Periods: 
 3-12 Sep, 18-23 Sep.

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

Central Australian Regions: NA
 Mildly Disturbed Periods: 14-18 Sep.
 Best Quiet Periods: 3-12 Sep, 18-23 Sep.

Southern Australian Regions:
 Disturbed Periods: 26-28 Aug, 14-18 Sep.
 Best Quiet Periods: 5-12 Sep, 20-23 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