[Ips-wgr] ASWFC Weekly Geo. Report (13 February 25) issued 0146 UT on 13 Feb 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 13 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (04 FEBRUARY - 12 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               
 04 Feb   2221 0112    4  
 05 Feb   1222 2312    7  
 06 Feb   2221 2111    5  
 07 Feb   1111 0101    2  
 08 Feb   1132 3122    7  
 09 Feb   2323 3445   20  
 10 Feb   4233 3323   14  
 11 Feb   3332 3322   12  
 12 Feb   2223 2332   10  

*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 briefly on 09-Feb due to
coronal hole high speed solar wind stream effects. G0 conditions
were observed on all other days.

2. FORECAST (13 FEBRUARY - 15 MARCH)
Disturbed Periods: 
13-17 Feb, 27-Feb to 2-Mar, 7-15 Mar. 

Best Quiet Periods: 
 19-25 Feb, 4-5 Mar.

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

Central Australian Regions: NA

Southern Australian Regions:
 Disturbed Periods: 14-18 Feb, 28-Feb to 2-Mar and 10-15 Mar.
 Best Quiet Periods: 20-26 Feb, 4-8 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