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

In this section you will find the weather warnings history.

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Aviso Meteorológico-IMN-141123-5:15p.m.

Nov

14

Weather Warning (Update)

Rains of varying intensity during the afternoon

November 14, 2023
4.40 pm

Diagnosis: Local factors such as diurnal warming, high humidity content and entry of sea breezes favor unstable atmospheric conditions. This afternoon, heavy downpours with storms have been recorded in several sectors of the country, among the strongest are Cartago, Rancho Redondo (Goicoechea), Paraíso, Cañas and Bagaces, as well as the hill of La Muerte and Montecarlo de Pérez Zeledón. Amounts between 20 mm to 60 mm in the last 3 hours.

Forecast: For the remainder of the afternoon, localized but strong downpours with storms are expected to develop in the Northern Zone and Guanacaste, as well as around the Gulf and Peninsula of Nicoya. Mountains and plains of the Caribbean, Western Central Valley, Central and South Pacific. Punctual accumulations for the 12-hour period will be between 10 – 40 mm with maximums located between 50 – 70 mm (higher probability towards the North Zone). In addition, for the night period, fog banks are expected in mountainous sectors of the country and rains in the first hours in the Northern Zone and mountains of the Northern Caribbean.

Warning: Soil saturation continues with high percentages in the North Zone, North Caribbean and South Pacific, take extreme preventive measures.

Due to the above, the IMN recommends:

• Caution due to sewage saturation and possible flash floods, as well as the main routes of the country in the event of heavy rain events

. • Prevention against electrical storms and seeking shelter in a safe place in case strong gusts of wind occur or are perceived near storm clouds, due to the possible fall of tree branches, power lines, among others.

• Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute CR and the WEB Page: www.imn.ac.cr

Gabriela Chinchilla

Meteoróloga

DMSA-IMN