[Ips-wgr] ASWFC Weekly Geo. Report (27 February 25) issued 0057 UT on 27 Feb 2025 [SEC=OFFICIAL]

Thu Feb 27 11:57:51 AEDT 2025

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 27 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (18 FEBRUARY - 26 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               
 18 Feb   3321 1323   10  
 19 Feb   3232 1233   10  
 20 Feb   2210 1001    2  
 21 Feb   1110 2002    2  
 22 Feb   2102 1012    3  
 23 Feb   2210 0003    4  
 24 Feb   2122 2243   10  
 25 Feb   2222 1123    7  
 26 Feb   2232 3333   12  

*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 were observed throughout the week of 20-26 Feb.

2. FORECAST (27 FEBRUARY - 29 MARCH)
Disturbed Periods: 
 27 Feb to 2 Mar, 8-11 Mar, 13-16 Mar and 26-28 Mar

Best Quiet Periods: 
 4-6 Mar, 18-24 Mar

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

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 27 Feb to 25 Mar.

Southern Australian Regions:
 Disturbed Periods: 28-Feb to 2-Mar, 8-11 Mar, 13-16 Mar and 26-28 Mar.
 Best Quiet Periods: 4-6 Mar, 18-24 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