[Ips-wgr] ASWFC Weekly Geo. Report (05 January 23) issued 0054 UT on 05 Jan 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 05 JANUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (27 DECEMBER - 04 JANUARY)
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               
 27 Dec   3334 4322   16  
 28 Dec   2221 1012    4  
 29 Dec   1012 2323    7  
 30 Dec   3333 5333   19  
 31 Dec   3322 2223   10  
 01 Jan   2222 2333   10  
 02 Jan   2211 2122    5  
 03 Jan   1111 1222    4  
 04 Jan   4333 3222   13  

*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.

An isolated period of G1 activity was observed on 30-Dec. G0 conditions 
were observed on other days. The mild activity observed on 27 Dec, 30 Dec 
and 04 Jan was induced by solar coronal hole wind streams.

2. FORECAST (05 JANUARY - 04 FEBRUARY)
Disturbed Periods: 
20,22-23 Jan.

Best Quiet Periods: 
 8-14 Jan,  16 Jan,  24 Jan,  29-30 Jan.

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

Central Australian Regions:
 Mildly disturbed Periods: 19-24 Jan, 26-28 Jan

Southern Australian Regions:
 Disturbed Periods: 19-24 Jan, 26-28 Jan.
 
Best Quiet Periods: 08-17 Jan,  30-Jan, 04-09 Feb


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