[Ips-wgr] SWS Weekly Geo. Report (28 July 22) issued 0119 UT on 28 Jul 2022 [SEC=OFFICIAL]

[rwc]

SUBJ: SWS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 28 JULY 2022, BY Space Weather Services,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (19 JULY - 27 JULY)
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               
 19 Jul   3434 4333   19  
 20 Jul   1201 1121    3  
 21 Jul   1122 2533   13  
 22 Jul   3222 0211    6  
 23 Jul   4432 3011   12  In the SWS magnetometer data for 23 
                          Jul, a weak (15nT) impulse was observed 
                          at 0258UT.
 24 Jul   2221 2321    7  
 25 Jul   2110 0011    2  
 26 Jul   3202 2001    4  
 27 Jul   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.


G1 geomagnetic conditions on 19, 21 and 23 Jul, 
due to both coronal hole effects and CME impacts. 
G0 geomagnetic conditions on all other days.                                    
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                    G0 on other
days.

2. FORECAST (28 JULY - 27 AUGUST)
Disturbed Periods: 
 3-4 Aug, 8 Aug, 17 Aug.

Best Quiet Periods: 
 28 Jul-01 Aug, 06 Aug, 12-15 Aug, 21-27 Aug.

3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
 Disturbed Periods: None.
 Best Quiet Periods: 28 Jul to 27 Aug.

Central Australian Regions:
 Mildly Disturbed Periods: 09-11 Aug, 18-20 Aug.
 Best Quiet Periods: 28 Jul-07 Aug, 13-16 Aug, 22-27 Aug.

Southern Australian Regions:
 Disturbed Periods: 09-11 Aug, 18-20 Aug.
 Best Quiet Periods: 28 Jul-07 Aug, 13-16 Aug, 22-27 Aug.


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
Level 2 Bice Building, Lot Fourteen Precinct, North Terrace, Adelaide SA 5000
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au