An orange level severe weather alert has been issued for the Valencia region with especially heavy rain forecast for the coastal strip of Castellón, Valencia and the north of Alicante provinces.
According to the regional Emergency Coordination Centre, there is a 40-60% risk of sixty-minute downpours of up to 50 litres per square metre over the coming hours.
A 7-year-old baby boy was killed in a storm on Saturday night that caused extensive flooding across Castellón province.
His 27-year-old mother was forced to abandon her car at around 10.15pm after getting into difficulties on a rural road linking Calig and Peñíscola, but she and her three children were swept away in flash floods when they tried to cross the normally dried-up Les Tosses de Pandolsun river bed (photo) on foot.
She and her two eldest children (aged 6 and 8) survived, but were taken to Vinarós Hospital suffering from hypothermia.
The baby was found shortly after midnight some 900 metres downstream.
His devastated father, who was not in the car, is being treated at the same hospital for shock.