[Ips-wgr] ASWFC Weekly Geo. Report (22 June 23) issued 0157 UT on 22 Jun 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 22 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (13 JUNE - 21 JUNE)
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               
 13 Jun   1121 0101    2  
 14 Jun   1101 0001    1  
 15 Jun   1122 3444   14  
 16 Jun   3434 4322   17  
 17 Jun   2222 2221    6  
 18 Jun   2212 0232    6  
 19 Jun   2112 2322    7  
 20 Jun   2110 3212    5  
 21 Jun   2210 1002    3  

*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 this week. 

2. FORECAST (22 JUNE - 22 JULY)
Disturbed Periods: 
 14-17 Jul

Best Quiet Periods: 
 25-26 Jun,  29-30 Jun,  2-7 Jul,  9-11 Jul.

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

Central Australian Regions: 
 Mildly Disturbed Periods: 13-14 Jul.
 Best Quiet Periods: 23 Jun to 11 Jul, 16-22 Jul. 

Southern Australian Regions:
 Disturbed Periods: 13-14 Jul.
 Best Quiet Periods: 23 Jun to 11 Jul,  16-22 Jul.

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