| Year | Anomaly | Coordinates | Swarm region (number of events) |
| 1997 | Mar -Fall | −7.76N, −10.49S, −69.96E,−72.96W | Western Brazil, Peru border (3) |
| 2001 | Apr-Fall | −16.21N, −34.23S, −61.14E,−72.04W | Jujuy-Argentina, Southern Bolivia, Chile/Bolivia (20) |
| 2005 | Mar-(Fall) | −16.94N, −27.78S, −60.58E,−68.38W | Jujuy-Argentina, Chile/Bolivia, Peru/Brazil border (17) |
| 2007 | May-(Fall) | 8.49N, −52.21S, −14.03E,−119.15W | Chile/Argentina, Western Brazil, S. Peru, Jujuy (13) |
| 2007 | Aug-winter | −18.07N, −27.15S,−64.48E,−68.03W | S Bolívia, Argentina border, Jujuy Argentina (13) |
| 2010 | Feb-Summer | −18.07N, −25.15S,−64.36E,−69.46W | Chile/Argentina, South Bolivia, Jujuy, (15) |
| 2015 | Feb -Summer | −17.6N, −26.74S, −63.86E,−68.15W | (Jujuy, Salta) Argentina, Southern Bolivia (13) |
| 2015 | Nov-Spring | −7.58N, −11.39S,−69.56E,−72.33W | Peru/Brazil border, Western Brazil (19) |
| 2016 | Oct-Nov Spring | −18.07N, −26.36S,−65E,−68W | Chile/Argentina border, South Bolivia (23) |
| 2017 | May-Jul Fall-Winter | −18.07N, −26.36S,−65E,−68.6 | Chile/Argentina border, S.Bolivia, Salta, Jujuy, Mendoza (65) |
| 2017 | Dec Summer | −18.54N, −25.06S,−65.37E,−68.97W | Bolivia (Central, South), Jujuy, Salta, Mendoza (Argentina) (13) |
| 2018 | Apr-Jul Fall-Winter | −18.07, −27.15S,−64.48E,−69.03W | Jujuy, Salta, Chile/Argentina border, South Bolivia (41) |
| 2019 | Dec-Summer | −19.12N, −25.30S,−64.13E,−70.1W | Chile/Argentina, Jujuy (11) |