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Wednesday, April 13, 2022

Easter Week Flooding in La Laguna in 1977

Flooding in La Laguna in 1977

Between 10 and 13 April 1977 there was an intense and memorable rainy episode, lasting several days in the Canary Islands that left precipitation of more than 350 l / m2 in the south west and of more than 220 l / m2 in the south east of Tenerife. 

San Cristóbal de La Laguna was partially incommunicado for several days due to this Easter flooding. The powerful SW storm of Holy Week of 1977 is one of the most important storms of the 20th century in the Canary Islands. It affected the entire western province and Gran Canaria, but was especially virulent in Tenerife. The records in 24 hours are eloquent: 358.9 mm in Vilaflor on 11 April; 260.3mm at Los Rodeos on 10 April. 

In El Escobonal (Güímar), also in Tenerife, more than 400 mm of rain fell during just this storm, when its annual average is around 380 mm. It caught everyone off guard with their mind still on the recent Los Rodeos accident, the most important in civil aviation.