[Ips-wgr] ASWFC Weekly Geo. Report (17 August 23) issued 0207 UT on 17 Aug 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 17 AUGUST 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (08 AUGUST - 16 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               
 08 Aug   2111 1111    3  
 09 Aug   1111 3122    5  
 10 Aug   1211 1311    5  
 11 Aug   1110 0111    2  
 12 Aug   2221 1111    4  
 13 Aug   1211 1001    2  
 14 Aug   1110 1011    2  
 15 Aug   1110 0002    2  
 16 Aug   1211 2221    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.


Quiet to unsettled conditions.

2. FORECAST (17 AUGUST - 16 SEPTEMBER)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 17-18 Aug,  21-22 Aug, 29 Aug,  1 Sep,  3-6 Sep,  8 Sep,  12 Sep.

Best Quiet Periods: 
 19-20 Aug,  23-24 Aug,  30-31 Aug,  2 Sep,  7 Sep.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: 
 Disturbed Periods: None.
 Best Quiet Periods: 19-20 Aug, 23-28 Aug, 04-16 Sep,

Central Australian Regions: 
 Disturbed Periods: None.
 Mildly Disturbed Periods: 01-Sep.
 Best Quiet Periods: 19-20 Aug, 23-28 Aug, 05-16 Sep.

Southern Australian Regions:
 Disturbed Periods: 01-Sep.
 Best Quiet Periods: 19-20 Aug,  24-28 Aug, 05-12 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