[Ips-wgr] ASWFC Weekly Geo. Report (17 October 24) issued 0041 UT on 17 Oct 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 17 OCTOBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (08 OCTOBER - 16 OCTOBER)
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               
 08 Oct   4444 3323   20  
 09 Oct   3333 4212   13  
 10 Oct   1112 4767   50  In the BOM magnetometer data for 10 
                          Oct, a moderate (73nT) impulse was 
                          observed at 1515UT.
 11 Oct   6467 5423   53  
 12 Oct   4235 4322   19  In the BOM magnetometer data for 12 
                          Oct, a weak (9nT) impulse was observed 
                          at 1715UT.
 13 Oct   1002 1111    2  
 14 Oct   1110 1223    5  
 15 Oct   2232 3323   11  
 16 Oct   2222 3323   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.

A severe geomagnetic disturbance was observed over 10 and 11-Oct due to a CME
arrival. 
Predominately planetary G4 conditions were observed from 10/1500UT until
11/0900UT. 
One period of planetary G5 was observed 10/2100-2400UT (US SWPC planetary Kp
index 
reached 8 and 2/3 or 9-). This was the strongest disturbance observed during the

week and was associated with R3 flare activity on 09-Oct. In the Australian
region 
geomagnetic activity was at G3 on 10-Oct and 11-Oct, and at G1 briefly on 12-Oct
for 
one K-index period.  

2. FORECAST (17 OCTOBER - 16 NOVEMBER)
Disturbed Periods: 
Mild disturbance on 19 Oct and 21-22 Oct.

Best Quiet Periods: 
 23-25 Oct, 27-Oct to 01-Nov, 13-Nov to 15-Nov.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 17-Oct to 5-Nov,  4-12 Nov.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 17-Oct to 2 Nov,  4-5 Nov,  8-12 Nov.

Southern Australian Regions:
 Disturbed Periods: 3 Nov,  6-7 Nov.
 Best Quiet Periods: 21-Oct to 2-Nov,  4-5 Nov,  9-12 Nov.


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