[Ips-wgr] ASWFC Weekly Geo. Report (09 March 23) issued 0054 UT on 09 Mar 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 09 MARCH 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (28 FEBRUARY - 08 MARCH)
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               
 28 Feb   3333 2133   12  
 01 Mar   3112 1122    6  
 02 Mar   2222 2233    9  
 03 Mar   3333 3233   14  
 04 Mar   3232 2233   11  
 05 Mar   3233 4343   17  
 06 Mar   3323 3223   12  
 07 Mar   2332 2101    7  
 08 Mar   1122 1232    6  

*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 observed during the week. A mild increase in geomagnetic
activity was observed 03-06 Mar due to a coronal hole wind stream.
 

2. FORECAST (09 MARCH - 08 APRIL)
Disturbed Periods: 
14-15 Mar, 20-Mar, 22-Mar, 30-Mar to 02 Apr.

Best Quiet Periods: 
09-12 Mar, 16-18 Mar, 21-Mar, 23-Mar, 04-08 Apr

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 9-24 Mar,  5-8 Apr.

Central Australian Regions:
 Mildly Disturbed Periods: 22-Mar, 26-Mar to 03-April
 Best Quiet Periods: 9-20 Mar,  5-8 Apr.

Southern Australian Regions:
 Disturbed Periods: 33-Mar, 26-Mar to 03-Apr.
 Best Quiet Periods: 9-20 Mar, 05-08 Apr


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