[Ips-wgr] ASWFC Weekly Geo. Report (16 February 23) issued 0139 UT on 16 Feb 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 16 FEBRUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (07 FEBRUARY - 15 FEBRUARY)
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               
 07 Feb   3433 3323   15  
 08 Feb   3323 3233   13  
 09 Feb   2422 2333   12  
 10 Feb   2222 3223    9  
 11 Feb   2213 2012    6  
 12 Feb   2211 1222    5  
 13 Feb   2011 3111    4  
 14 Feb   2122 1112    5  
 15 Feb   2344 3533   21  

*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 geomagnetic conditions were observed on 15-Feb, due to a CME impact
late on 14-Feb followed by extended periods of southward IMF conditions.
G0 geomagnetic conditions were observed on all other days.

2. FORECAST (16 FEBRUARY - 18 MARCH)
Disturbed Periods: 
 8-10 Mar.

Best Quiet Periods: 
 19-21 Feb,  23-26 Feb,  28 Feb to 4 Mar,  11-13 Mar.

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

Central Australian Regions: 
 Mildly Disturbed Periods: 19-Feb, 23-24 Feb, 6-8 Mar.
 Best Quiet Periods: 16-17 Feb, 21 Feb, 26 Feb to 4 Mar, 10-16 Mar.

Southern Australian Regions:
 Disturbed Periods: 19-Feb, 23-24 Feb, 6-8 Mar.
 Best Quiet Periods: 16-17 Feb, 21 Feb, 26 Feb to 4 Mar, 10-16 Mar.

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