[Ips-wgr] ASWFC Weekly Geo. Report (12 January 23) issued 0136 UT on 12 Jan 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 12 JANUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (03 JANUARY - 11 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               
 03 Jan   1111 1222    4  
 04 Jan   4333 3222   13  
 05 Jan   1222 3322    8  
 06 Jan   2111 1012    3  In the BOM magnetometer data for 06 
                          Jan, a weak (8nT) impulse was observed 
                          at 0056UT.
 07 Jan   2220 1222    5  
 08 Jan   2212 2111    5  
 09 Jan   2111 1112    4  
 10 Jan   2111 2222    5  
 11 Jan   3322 1223    9  

*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.

G0 geomagnetic conditions were observed throughout the week.

2. FORECAST (12 JANUARY - 11 FEBRUARY)
Disturbed Periods: 
 18-23 Jan, 26-28 Jan.

Best Quiet Periods: 
 12-14 Jan,  16 Jan,  24 Jan,  29-30 Jan,  1-6 Feb.

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

Central Australian Regions:
 Mildly Disturbed Periods: 19-24 Jan, 26-28 Jan.
 Best Quiet Periods: 12-17 Jan, 30-Jan to 11-Feb.

Southern Australian Regions:
 Disturbed Periods: 19-24 Jan, 26-28 Jan.
 Best Quiet Periods: 12-17 Jan, 30-Jan to 11-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