[Ips-wgr] ASWFC Weekly Geo. Report (09 February 23) issued 0122 UT on 09 Feb 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 09 FEBRUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (31 JANUARY - 08 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               
 31 Jan   1221 1321    6  
 01 Feb   1010 1233    5  In the BOM magnetometer data for 01 
                          Feb, a weak (8nT) impulse was observed 
                          at 1637UT.
 02 Feb   2211 0011    3  
 03 Feb   2111 2432    9  
 04 Feb   2210 1002    3  
 05 Feb   1110 1112    3  
 06 Feb   3323 2234   13  
 07 Feb   3433 3323   15  
 08 Feb   3323 3233   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.


Quiet to unsettled conditions.

2. FORECAST (09 FEBRUARY - 11 MARCH)
Disturbed Periods: 
 9-10 Feb, 14 Feb, 17-19 Feb, 22 Feb, 5-9 Mar.

Best Quiet Periods: 
 21 Feb,  23 Feb to 1 Mar,  3-4 Mar.

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

Central Australian Regions: 
 Mildly Disturbed Periods: 10-Feb, 23-24 Feb, 6-10 Mar
 Best Quiet Periods: 12-18 Feb, 20-21 Feb, 26 Feb to 5 Mar.

Southern Australian Regions:
 Disturbed Periods: 10-Feb, 23-24 Feb, 6-10 Mar
 Best Quiet Periods: 13-16 Feb, 21-Feb, 26-Feb, 28 Feb to 5 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