[Ips-wgr] ASWFC Weekly Geo. Report (13 March 25) issued 0118 UT on 13 Mar 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (04 MARCH - 12 MARCH)
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 Mar   1221 1223    6  
 05 Mar   2212 1312    6  
 06 Mar   2222 0121    5  
 07 Mar   2222 2322    8  
 08 Mar   2233 2444   16  
 09 Mar   3335 4323   19  
 10 Mar   2222 2212    6  
 11 Mar   1122 2112    5  
 12 Mar   3333 4443   19  

*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 level geomagnetic storming was observed in the Australian region on
09-Mar due to coronal hole high speed wind stream effects. G1 conditions
were observed at some stations in Australia on 08-Mar and 12-Mar, also
due to coronal hole high speed wind stream effects. 

2. FORECAST (13 MARCH - 12 APRIL)
Disturbed Periods: 
 13-18 Mar,  26-28 Mar and  04-12 Apr.

Best Quiet Periods: 
 20-24 Mar and 30-Mar to 02-Apr.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 13-25 Mar and 31-Mar to 12-Apr.

Central Australian Regions:
 Disturbed Periods: 26-30 Mar.
 Best Quiet Periods: 20-24 Mar and 30-Mar to 02-Apr.

Southern Australian Regions:
 Disturbed Periods: 13-18 Mar, 26-30 Mar and 05-12 Apr 
 Best Quiet Periods: 20-24 Mar and 30-Mar to 02-Apr.


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