The Pacific coast and the Nicoya peninsula are taking the brunt of the storms that have blanketed Costa Rica.
The national emergency commission is estimating from 150 to 200 millimeters over 24 hours in some places. That is from 6 to 8 inches.
The Instituto Meteorológico Nacional reported that a system of low pressure is driving the humidity into the country.
Rain fell in most of the country Monday, and more is predicted for today.
The Comisión Nacional de Prevención de Riesgos y Atención de Emergencias reported flooding, slides and damage to roadways in Golfito and said that some people remain in a public shelter in Valverde Vega in the mountains northwest of San José. A precautionary alert was issued for the entire Pacific coast and the Central Valley.
The Río Parrita was said to be rising with residents expected in a shelter there. A slide near Parrita is believed to have blocked the Costanera Sur.
There was flooding in Paquera and Cóbano on the peninsula. Sarchí Norte, Sarchí Sur and Bajo los Rodríguez were the locations in Valverde Vega that suffered the most damage, said the commission.