[Ips-wgr] ASWFC Weekly Geo. Report (28 March 24) issued 0151 UT on 28 Mar 2024 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 28 MARCH 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (19 MARCH - 27 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               
 19 Mar   3222 1111    6  
 20 Mar   1121 0002    2  
 21 Mar   3322 4333   14  In the BOM magnetometer data for 21 
                          Mar, a weak (16nT) impulse was observed 
                          at 0250UT.
 22 Mar   3334 1101   10  In the BOM magnetometer data for 22 
                          Mar, a weak (10nT) impulse was observed 
                          at 1112UT.
 23 Mar   3423 4344   20  
 24 Mar   4333 6653   36  In the BOM magnetometer data for 24 
                          Mar, a moderate (71nT) impulse was 
                          observed at 1436UT.
 25 Mar   4544 4322   23  
 26 Mar   2213 2222    7  
 27 Mar   3131 1012    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.

G2 geomagnetic conditions were observed on 24-Mar in the Australian region
due to the arrival of a full halo CME first observed on 23-Mar. G0 
geomagnetic conditions were observed on all other days. 

2. FORECAST (28 MARCH - 27 APRIL)
Disturbed Periods: 
 19-22 Apr.

Best Quiet Periods: 
 28 Mar to 2 Apr,  7-8 Apr,  10-16 Apr, 23-27 Apr.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 28 Mar to 20 Apr,  22-27 Apr.

Central Australian Regions:
 Mildly Disturbed Periods: 20-23 Apr.
 Best Quiet Periods: 28 Mar to 18 Apr,  25-27 Apr.

Southern Australian Regions:
 Disturbed Periods: 20-23 Apr.
 Best Quiet Periods: 28 Mar to 18 Apr,  25-27 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