[Ips-wgr] ASWFC Weekly Geo. Report (22 December 22) issued 0037 UT on 22 Dec 2022 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 22 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (13 DECEMBER - 21 DECEMBER)
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               
 13 Dec   2110 1101    2  
 14 Dec   1110 1212    3  
 15 Dec   2222 1222    6  
 16 Dec   2110 1012    3  
 17 Dec   1100 1001    1  
 18 Dec   1111 1112    3  
 19 Dec   2431 2122    9  
 20 Dec   1222 1223    7  
 21 Dec   2122 2322    7  

*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.


Geomagnetic conditions were at the ASWAS G0 level all week.

2. FORECAST (22 DECEMBER - 21 JANUARY)
Disturbed Periods: 
27-28 Dec.

Best Quiet Periods: 
 1-2 Jan,  6-14 Jan,  16 Jan.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: 
 Disturbed Periods: None

Central Australian Regions:
 Mildly disturbed periods: 25-31 Dec

Southern Australian Regions:
 Disturbed Periods: 25-31 Dec
 
Best Quiet Periods: 01-03 Jan, 06-17 Jan.


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