[Ips-wgr] ASWFC Weekly Geo. Report (30 March 23) issued 0105 UT on 30 Mar 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 30 MARCH 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (21 MARCH - 29 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               
 21 Mar   1112 1212    4  
 22 Mar   3233 2321   10  
 23 Mar   2133 6455   30  
 24 Mar   5454 2343   26  
 25 Mar   2223 3222    9  
 26 Mar   2321 0122    6  
 27 Mar   1100 0001    1  
 28 Mar   1111 2112    4  
 29 Mar   2101 1112    3  

*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.


G1 on 24 Mar. G2 storm on 23 Mar.  Quiet to unsettled on other days.

2. FORECAST (30 MARCH - 29 APRIL)
Disturbed Periods: 
31 Mar to 1 Apr,  11 Apr, 19-20 Apr

Best Quiet Periods: 
 6-9 Apr,  13-14 Apr,  19-20 Apr,  22-25 Apr.

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

Central Australian Regions:
 Disturbed Periods: None.
 Mildly Disturbed Periods: 1-Apr, 11-Apr, 19-20 Apr
 Best Quiet Periods: 6-9 Apr, 13-14 Apr, 19-20 Apr, 22-25 Apr

Southern Australian Regions:
 Disturbed Periods: 1-Apr, 11-Apr, 19-20 Apr
 Best Quiet Periods: 6-9 Apr,  13-14 Apr,  22-25 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