[Ips-wgr] ASWFC Weekly Geo. Report (01 June 23) issued 0104 UT on 01 Jun 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 01 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (23 MAY - 31 MAY)
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               
 23 May   2222 0033    7  
 24 May   2311 2232    8  
 25 May   2232 2121    7  
 26 May   2221 0211    4  
 27 May   1100 0011    1  
 28 May   2223 2022    7  
 29 May   1110 0001    1  
 30 May   0011 0012    2  
 31 May   1121 1132    5  

*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 conditions observed all week.

2. FORECAST (01 JUNE - 01 JULY)
Disturbed Periods: 
06-07 June, 16-Jun, 18-21-June.

Best Quiet Periods: 
01-Jun, 10-14 Jun, 22-28 Jun.

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

Central Australian Regions:
  Disturbed Periods: None.

Southern Australian Regions:
 Disturbed Periods: 02-Jun, 04-Jun, 06-07-Jun, 16-June, 18-21-Jun.

Best Quiet Periods: 01-Jun, 05-Jun, 09-16 Jun, 23-28 Jun.


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