The national weather service appears to have called conditions correctly Wednesday.
At 9:30 a.m. the Instituto Meteorológico Nacional said that rainy weather has moved to the northwest over the Caribbean. That was the low pressure area that brought rain earlier in the week. But the weather service said that there would be more rain in the afternoon.
About an hour later, the weather institute amplified that report and said that higher temperatures and wind for the Pacific were bringing in more moisture that would develop into strong rains along the Pacific coast, in the Central Valley and in the northern zone. The prediction, which was correct, called for intense downpours, lightning and some strong winds. The institute also said correctly that the rain would continue through the early hours of the evening.
The Consejo was expecting more slides where there were steep grades alongside the highways.
Wednesday Upala in the north got 65.4 millimeters, a bit more than 2.5 inches, nearly all of it between 3 and 5 p.m., according to the weather station there.
The automatic station at Juan Santamaría airport showed that 35.2 millimeters of rain, slightly less than 1.5 inches, had fallen after 7 a.m. Wednesday.
That was on top of the 41.8 millimeters, 1.64 inches, in the previous 24 hours.
There was 32.3 millimeters (1.27 inches) in San José at the weather institute headquarters in Barrio Aranjuez. Turrialba got about the same with 32.8 millimeters.
An automatic station in Liberia registered 44.3 millimeters (1.75 inches), but there was no rain reported at Daniel Oduber airport. There also was no rain at all in Limón, according to the automatic stations there.
By 5:45 p.m. the first report of road problems came in from the Consejo Nacional de Vialidad. The InterAmericana Norte was closed at Esparza because of a landslide. That problem was cleared up and traffic reestablished later in the evening. But the bridge on Ruta 32 at the Río Parismina near Guácimo had failed forcing motorists to take alternate routes.
There also was a slide at Cambronero on the InterAmericana about 4 p.m., and the heavy rain was preventing workers from clearing away the mess, the Consejo said.
The highway on the northeast side of Lake Arenal also was reported closed.
Today rains are expected to continue but not as strongly.