Q COSTA RICA – The Comisión Nacional de Emergencias (CNE) – National Emergency Commission – reported that 18 floods occurred this Wednesday as a result of Tropical Wave No.9, which caused heavy downpours in much of the country.
Most of the incidents were registered in Tarrazú and Heredia.
Route 239, which links San José and Puntarenas, (through Cuidad Colon, Puriscal, Parrita) closed due to a landslide that blocked the road and prevented drivers from passing.
In the canton of Barva, Heredia, in particular, Santa Lucía and its surroundings, was reported that the amount of rain reached 48 mm in a period of one hour.
“Most of the incidents are due to the collapse of sewage systems,” the CNE clarified.
Tropical Wave No.10 is expected to enter the country this weekend.
What is a Tropical Wave?
Wikipedia describes a Tropical Wave as a type of atmospheric trough, an elongated area of relatively low air pressure, oriented north to south, which moves from east to west across the tropics, causing areas of cloudiness and thunderstorms. Tropical waves form in the easterly flow along the equatorial side of the subtropical ridge or belt of high air pressure which lies north and south of the Intertropical Convergence Zone (Zona de convergencia intertropical) – ITCZ.
The official weather forecast for this Thursday, June 15, 2023:
For this Thursday, typical conditions of the rainy season are expected, where atmospheric instability over the country will be caused by local factors and the influence of the ITCZ. For the early morning and early morning, variable cloudiness is anticipated in coastal sectors of the Caribbean and Pacific, with possible scattered light rains, especially to the south of the Nicoya Peninsula and around the Osa Peninsula. For the afternoon and early evening, scattered showers with storms are expected for the Central and South Pacific regions, the Nicoya Peninsula, the western and northern Central Valley, and the mountainous areas of the Caribbean and Northern Zone.