Il National Hurricane Center (NHC) ha dato il nome Alpha alla tempesta subtropicale che ha colpito il Portogallo. Ha dovuto ricorrere all'alfabeto greco, cosa che non accadeva dal 2005. Vi mostriamo i video dei danni che il ciclone ha causato nel sud del Portogallo.
| Rischio | Inizio | Fine | Fenomeno |
| 20 Set, 05:00 h | 21 Set, 05:00 h | Flood. Although rather usual in this region, locally or potentially dangerous phenomena are expected. (such as local winds, summer thunderstorms, rising streams or high waves) Be aware and pay attention to the latest weather updates, especially if you carry out activities exposed to weather or close to a stream or shoreline. | |
| 20 Set, 05:00 h | 21 Set, 05:00 h | Temporali. Although rather usual in this region, locally or potentially dangerous phenomena are expected. (such as local winds, summer thunderstorms, rising streams or high waves) Be aware and pay attention to the latest weather updates, especially if you carry out activities exposed to weather or close to a stream or shoreline. |