[Ips-wgr] ASWFC Weekly Geo. Report (16 March 23) issued 0043 UT on 16 Mar 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 16 MARCH 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (07 MARCH - 15 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               
 07 Mar   2332 2101    7  
 08 Mar   1122 1232    6  
 09 Mar   2233 3222   10  
 10 Mar   2121 2212    5  
 11 Mar   2110 1012    3  
 12 Mar   2222 1112    5  
 13 Mar   1101 0101    1  
 14 Mar   3433 3322   14  
 15 Mar   2543 2225   20  In the BOM magnetometer data for 15 
                          Mar, a weak (19nT) impulse was observed 
                          at 0427UT.

*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.


Active on 15 Mar.   Quiet to unsettled on other days.

2. FORECAST (16 MARCH - 15 APRIL)
Disturbed Periods: 
16 Mar, 25-26 Mar.

Best Quiet Periods: 
 19 Mar, 7-9 Apr.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 18-23 Mar,  3-8 Apr.

Central Australian Regions:
 Disturbed Periods: None.
 Mildly Disturbed periods: 16-Mar, 25-26 Mar, 01-Apr
 Best Quiet Periods: 18-19 Mar, 03-Apr, 06-08 Apr.

Southern Australian Regions:
 Disturbed Periods: 16-Mar, 25-26 Mar,  01-02 Apr.
 Best Quiet Periods: 18-19 Mar, 03-Apr, 06-08 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