Weather warnings

May

08

Meteorological Warning Update

(Update) Showers and thunderstorms during the afternoon and early morningmeras horas de la noche

May 8, 2025
6:00 pm

Forecast: Rainy conditions have been observed this afternoon on the Pacific coast, much of the Central Valley, and mountainous areas of the Caribbean and the Northern Zone, due to the activity of...

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May

08

Weather Warning

Showers and thunderstorms during the afternoon and early evening

May 08, 2025
10.30 a.m.

Discussion: The Intertropical Convergence Zone remains located over Costa Rica, generating significant moisture and instability. This, along with morning warming and the arrival of sea breezes,...

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May

07

Aviso Meteorológico Actualización

(Actualización) Lluvias y aguaceros fuertes en el Valle Central y la vertiente del Pacífico

7 de mayo de 2025
6:20 pm

Diagnóstico: La Zona de Convergencia Intertropical sobre el país, en conjunto con factores locales como el calentamiento diurno y el ingreso de humedad desde el Océano Pacífico, favorecerá...

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May

07

Weather Warning

Heavy rain and downpours in the Central Valley and the Pacific slope

May 7, 2025
09:35 a.m.

Diagnosis: The Intertropical Convergence Zone (ITCZ), combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, will favor variable rainfall throughout...

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May

06

Weather Warning (Update)

Heavy showers this afternoon and early evening in the country

May 6, 2025
6:20 p.m.

Diagnosis: The proximity of the Intertropical Convergence Zone, combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, has favored heavy downpours...

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Weather warnings history

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Aviso_IMN_140420_1030am

Apr

14

Weather Warning

Rainy storm conditions this afternoon in the Central Pacific and South Pacific

April 14, 2020
10.30 a.m.

Diagnosis: As usual in the transition period, the Intertropical Convergence Zone begins to approach Costa Rica, providing humidity and atmospheric instability to the national territory, creating ideal conditions for showers with an electrical storm this afternoon in the south of the country.

Forecast: Heavy storm showers concentrated in the South Pacific and Central Pacific sectors with amounts between 20-40mm and maximums of 60-70mm are forecast; part of these rains will reach the Central Valley and the Nicoya Peninsula in isolation. For its part, in the Caribbean regions and the North Zone, the partially cloudy sky will predominate with light rains in the upper parts. There is the possibility of rain in the early hours of the night, mainly in the South Pacific.

Due to the above, the IMN recommends:

• Caution in areas vulnerable to flooding due to sewerage saturation, especially in the South Pacific and Central Pacific regions.
• Take refuge in a safe place in case of hearing an electrical storm or perceiving strong gusts of wind near the storm clouds, as well as precaution for possible fall of tree branches, power lines, among others.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEBSITE: www.imn.ac.cr

Juan Diego Naranjo Díaz
Forecaster

DMSA-IMN