Alert | N° | Date (UTC) | Max Rainfall (mm) | Pop >100mm or higher | 50-100 | 100-250 | 250-500 | 500-750 | 750-1000 | >1000 | Countries |
| 1 | 13 Aug 2021 00:00 | 154 | 9 thousand | | | - | - | - | - | Cuba, Costa Rica |
| 2 | 13 Aug 2021 12:00 | 172 | 120 thousand | | | - | - | - | - | Cuba, Venezuela |
| 3 | 14 Aug 2021 00:00 | 153 | 200 thousand | | | - | - | - | - | United States, Cuba, El Salvador, Honduras, Nicaragua |
| 4 | 14 Aug 2021 12:00 | 148 | Few people | | | - | - | - | - | United States, Mexico, Cuba, Costa Rica |
| 5 | 15 Aug 2021 00:00 | 81 | - | | - | - | - | - | - | Guatemala, Mexico, Honduras, El Salvador, Colombia |
| 6 | 15 Aug 2021 12:00 | 189 | - | | - | - | - | - | - | Mexico, Puerto Rico, Honduras |
| 7 | 16 Aug 2021 00:00 | 283 | - | | - | - | - | - | - | Mexico, Honduras, El Salvador |
| 8 | 16 Aug 2021 12:00 | 434 | 6.3 million | | | | - | - | - | United States, Mexico, Cuba, Cayman Islands, Haiti, Dominican Republic, Jamaica, Guatemala, Honduras, El Salvador, Nicaragua, Colombia, Costa Rica, Venezuela |