Proprio nella notte del 25 ottobre, due anni fa, nel 2010, s’era verificata una tempesta analoga e anche allora, come stamattina (qui le foto, un tornado aveva interessato la baia di San Paolo.
Il nostro corrispondente maltese, Andrea Muscat, ci ha inviato tutti i dettagli della tempesta notturna con alcune splendide fotografie che pubblichiamo volentieri:
Strong Thunderstorms During MCS On 25th October 2012
A large, organized and long lived storm system called a Mesoscale Convective System (MCS) formed to the northwest of The Maltese Islands over Sicily late in the evening on Wednesday and passed over the Maltese Islands while moving slowly in a northwest to south east direction between 1:15 a.m. and 6:15 a.m. producing steady rain which was at times quite heavy mainly over the NW of Gozo and over The NE half of Gozo and Malta. The storm reached its peak intensity over the weather station at Gharb at around 3 a.m. after which it continued moving towards Malta when a period of heavy rain was accompanied by some hail, stronger wind from the NW and a sudden decline in temperature. Accompanying the storm there was incessant lightning and occasional thunderbolts. At time the thunderbolts were very intense. This storm produced rain which was much needed by many. The storm produced very little damage but flooding was reported in the usual areas including Xlendi in Gozo and Valley Road in Malta among others. At around mid morning on Thursday a waterspout was observed over the sea near St. Paul’s Bay.
59.9 mm of rain were measured produced. The fact that the rain produced by the storm overnight did not fall in a matter of minutes helped reduce surface run off even though flooding did occur in some areas. The strongest gust recorded during the storm was 36.7 km/h (Force 5) from the NW. These readings are based on those recorded by a weather station in Gharb. 43.3 mm were reported to have fallen in Hamrun according to a weather station owned by Allen Piscopo. Some other places in the Maltese Islands got even higher rainfall amounts.