Continua a crescere il bilancio delle vittime causate da tornado, violenti temporali e alluvioni che hanno colpito il Midwest e il Southeast degli Stati Uniti - a partire da venerdì scorso - devastando decine di abitazioni e stabili. Quattro i morti in Texas, cinque in Arkansas, due in Mississippi, due in Missouri e uno in Tennessee. Le autorità non escludono che il bilancio delle vittime possa aggravarsi ulteriormente.
I tornado presentano un pericolo tutto l'anno, tanto che nel solo mese di gennaio in Georgia e Florida ne sono stati registrati 138, contro una media annuale di 35. Sono inoltre difficili da prevedere e per questo causano più morti e danni rispetto agli uragani. Gli esperti sottolineano l'aumentato pericolo dei tornado a causa dei cambiamenti climatici, il loro raggio di azione (prima confinato al mid-west, alla zone dei "grandi-piani" e agli Stati del Sud), ora si sta ampliando persino al New England.
ATS/M. Ang.
Dal Tg12.30:
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