[Ips-wgr] ASWFC Weekly Geo. Report (19 October 23) issued 0149 UT on 19 Oct 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 19 OCTOBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (10 OCTOBER - 18 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               
 10 Oct   1210 0001    2  
 11 Oct   1110 1201    2  
 12 Oct   2110 0112    3  
 13 Oct   2233 3432   13  
 14 Oct   2212 1131    6  
 15 Oct   1100 0111    1  
 16 Oct   2110 1000    2  
 17 Oct   1100 0023    3  
 18 Oct   0223 3322    9  

*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 Australian conditions for 10-18 Oct.
Slightly enhanced conditions were observed on 13-Oct due to
coronal hole high speed wind stream effects.

2. FORECAST (19 OCTOBER - 18 NOVEMBER)
Disturbed Periods: 
No strong recurrence patterns present, however mild activity may occur on:
 19-21 Oct, 26-28 Oct, 8-10 Nov and 14-16 Nov.

Best Quiet Periods: 
 23-24 Oct, 30 Oct to 6-Nov, 12-13 Nov and 17-18 Nov. 

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 19-Oct to 18-Nov.

Central Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 25-Oct to 9-Nov, 12-18 Nov.

Southern Australian Regions:
 Disturbed Periods: 19-21 Oct, 8-10 Nov and 14-16 Nov.
 Best Quiet Periods: 23-Oct to 6-Nov, 12-13 Nov and 17-18 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