[Ips-wgr] ASWFC Weekly Geo. Report (09 January 25) issued 0055 UT on 09 Jan 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 09 JANUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (31 DECEMBER - 08 JANUARY)
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               
 31 Dec   1222 1533   13  In the BOM magnetometer data for 31 
                          Dec, a weak (15nT) impulse was observed 
                          at 1621UT.
 01 Jan   3555 6763   59  In the BOM magnetometer data for 01 
                          Jan, a weak (18nT) impulse was observed 
                          at 0308UT.
 02 Jan   3245 4433   22  
 03 Jan   2343 0212   10  
 04 Jan   2455 3343   25  
 05 Jan   2233 3332   12  
 06 Jan   2322 2322    9  
 07 Jan   2223 3323   11  
 08 Jan   2221 2211    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.

G3 geomagnetic conditions were observed in the Australian region on
01-Jan due to a CME arrival. Planetary geomagnetic conditions reached
G4 on this day. G1 geomagnetic conditions were observed on 31-Dec, 02-
Jan and 04-Jan. G0 geomagnetic conditions were observed on all other days. 

2. FORECAST (09 JANUARY - 08 FEBRUARY)
Disturbed Periods: 
No strong recurrent patterns, however mild activity may be experienced on:
 12-20 Jan,  27 Jan,  29 Jan,  31 Jan to 3 Feb.

Best Quiet Periods: 
 9-11 Jan,  21-26 Jan,  30 Jan,  4 Feb.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 9 Jan to 8 Feb.

Central Australian Regions:
 Mildly Disturbed Periods: 13-14 Jan, 17-20 Jan, 28-29 Jan, 31 Jan to 03 Feb.
 Best Quiet Periods: 9-11 Jan, 22-26 Jan, 5-7 Feb.

Southern Australian Regions:
 Disturbed Periods: 13-14 Jan, 17-20 Jan, 28-29 Jan, 31 Jan to 03 Feb.
 Best Quiet Periods: 9-11 Jan, 22-26 Jan, 5-7 Feb.

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