Aviso Meteorológico

Heavy downpours with thunderstorms this afternoon on the Pacific side

May 9, 2025

10:00 am

Diagnostic: The Intertropical Convergence Zone remains positioned near our country. Additionally, local factors such as high temperatures and the entry of sea breezes contribute to favorable conditions for variable rainfall.

Forecast: For this afternoon and early evening, isolated showers with thunderstorms are expected for the Pacific slope and the Central Valley. Rainfall may be particularly intense in the mountainous areas, around the Gulf of Nicoya, the Tempisque Valley, and the western and northern Central Valley. Accumulations of 20-60 mm are expected, with possible higher localized amounts. The Caribbean and northern regions may experience scattered showers in the highlands.

Warning: The South Pacific and Central Pacific have moderate to high soil saturation levels, between 80% and 90%. In the western Central Valley and the Nicoya Peninsula, levels range between 40% and 70%. This situation increases the risk of flooding and landslides, especially in vulnerable urban areas, in mountainous areas, and around the Gulf of Mexico in the South Pacific.

Therefore, the IMN recommends:

Caution due to sewer saturation in areas prone to this type of flooding.
Prepare for thunderstorms and seek shelter in a safe place if strong wind gusts occur or are felt near storm clouds, due to the possible fall of tree branches, power lines, among other things. These gusts can reach 80 km/h in some isolated cases.
Stay informed through social media: Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR, and the website: www.imn.ac.cr

Roberto Vindas

Meteorologist

DMSA-IMN

---