Days of torrential rain have triggered widespread flooding across parts of Kenya, turning roads into raging rivers and claiming dozens of lives.

Half of Kenya’s 47 counties have been affected by the flooding, which has killed at least 32 people and displaced more than 40,000 others from their homes, according to the United Nations Office for the Coordination of Humanitarian Affairs (OCHA), which cited the Kenya Red Cross Society.

The ongoing El Nino, a warming of the equatorial Pacific Ocean that increases wind shear over the Atlantic Ocean and the Caribbean Sea, has brought higher-than-average seasonal rainfall to East Africa. The heavy rain began in Kenya in March during the start of the country’s so-called long rains season and worsened over the past week, according to the Kenya Meteorological Department.

The Kenya Red Cross said its staff have rescued at least 188 people since the onset of the long rains, which typically last from March through May. Nearly 8,000 acres of land remain submerged and almost 5,000 livestock deaths have been reported.