| Potential predictors | Subgroup | Unit of measure |
| SST ENOS 3.4 | SST Areas | ˚K |
| SST Gulf of Mexico | ˚K | |
| SST Caribbean Sea | ˚K | |
| SST Tropical Atlantic | ˚K | |
| Temperature in 200 hPa | Selected at different isobaric surfaces | ˚K |
| Temperature at 850 hPa | ˚K | |
| Divergence at 200 hPa | 1/s | |
| Divergence at 850 hPa | 1/s | |
| Geopotential at 200 hPa | m2/s2 | |
| Geopotential at 500 hPa | m2/s2 | |
| Zonal component at 30 hPa | m/s | |
| Zonal component at 50 hPa | m/s | |
| Zonal component at 200 hPa | m/s | |
| Zonal component at 850 hPa | m/s | |
| Pressure at mean sea level | Selected at surface including thermodynamic indexes | Pa |
| Outgoing Longwave Radiation | w/m2 | |
| K-index | ˚K | |
| Gálvez-Davison Index | - |