[Ips-wgr] ASWFC Weekly Geo. Report (03 August 23) issued 0203 UT on 03 Aug 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 03 AUGUST 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (25 JULY - 02 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               
 25 Jul   1121 3223    7  In the BOM magnetometer data for 25 
                          Jul, a weak (12nT) impulse was observed 
                          at 2231UT.
 26 Jul   2442 3212   12  
 27 Jul   2222 1121    5  
 28 Jul   1111 1122    4  
 29 Jul   2211 2222    6  
 30 Jul   1222 2111    5  
 31 Jul   1111 2201    3  
 01 Aug   1111 2321    5  
 02 Aug   2213 3321    9  

*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 (03 AUGUST - 02 SEPTEMBER)
Disturbed Periods: 
13-14 Aug.

Best Quiet Periods: 
8-9 Aug, 19-20 Aug,  23-24 Aug.

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

Central Australian Regions: 
 Mildly Disturbed Periods: 5-06 Aug, 13-Aug, 22-Aug, 29-Aug
 Best quiet periods: 03-04 Aug, 15-21 Aug, 24-27 Aug

Southern Australian Regions:
 Disturbed Periods: 05-06 Aug, 10-Aug, 13-Aug, 22-Aug, 29-Aug
 Best Quiet Periods: 03 Aug,  08-09 Aug,  17-21 Aug,  24-27 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