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 Meteorólogico IMN 200520

May

20

Weather Warning

Intense downpours in the north of the country

May 20, 2020
3.30 pm

 

Diagnosis: This Wednesday continues the high moisture content in the region, this factor combined with the high temperatures in the national territory; In addition to the atmospheric instability caused by the influence of the Intertropical Convergence Zone, it is promoting intense downpours with an electrical storm in the north and center of the country, the highest accumulated at this time are in Upala, with a record of 80 mm, thus same 55 mm in Cañas, 36 mm in La Garita and 30 mm in Iztarú.

Forecast: The intense rainy activity with a storm that occurs in the north of the country will continue throughout the afternoon, especially in the Northern Zone.

For this afternoon and early evening, showers of varying intensity and showers with thunderstorms are expected on the Pacific side. The most intense activity is expected for the areas in the vicinity of the mountainous parts, as well as in and around the Nicoya and Osa peninsulas.

On the other hand, in the Central Valley and the Caribbean, rains and showers with an electrical storm are expected. For its part, for the coastal parts of the Caribbean, occasional rains of moderate intensity are anticipated for the remainder of the day.

Due to the above, the IMN recommends:

• Caution in areas vulnerable to flooding due to sewerage saturation, increased flow in rivers and streams, as well as sectors prone to landslides.
• Prevention on national routes such as: route 1, route 10, route 27, route 21, route 32, route 34, route 141 and route 126.
• 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 via Twitter: @IMNCR, Facebook: CR National Meteorological Institute and the WEB Page: www.imn.ac.cr

Gabriela Chinchilla
Meteorologist
DMSA-IMN