Weather warnings

May

10

Weather Warning

Rainy activity this Saturday

May 10, 2025
9:05 a.m.

Diagnosis: This Saturday, the Intertropical Convergence Zone remains over the national territory. In addition, high atmospheric pressure levels are increasing the intensity of the trade winds...

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May

09

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...

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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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Aviso Meteorológico-IMN-161123-1045am

Nov

16

Weather Warning

Rainy conditions this Thursday

November 16, 2023
10.45. a.m.

Discussion: The low-pressure system in the Caribbean Sea, near the coast of Nicaragua, favors a humid and unstable pattern, and also promotes the activation of the Intertropical Convergence Zone, positioning it over Costa Rica. The above has generated cloudy conditions since early hours and rains in the South Pacific, scattered in the Central Valley, amounts between 10-20 mm.

Forecast: Precipitation will continue to be present for much of the day. At the end of the morning and during the afternoon, rains of varying intensity and isolated downpours with an electrical storm in the South Pacific are estimated and will extend towards the afternoon in the mountainous and coastal Central Pacific, as well as the Central Valley. For the Northern Zone and mountains of the Caribbean, heavy downpours are expected, accompanied by an electrical storm. The rains in the mountainous parts of the Caribbean will gradually extend towards the coasts towards the end of the afternoon. Accumulated between 30-60 mm and maximums between 80-100 mm in periods of 6-12 hours.

During the night, intermittent rains are expected in the North Zone, coastal sectors of the Pacific; while in the Central Valley there may be light rain and banks of fog.

Warning: High soil saturation prevails in the South Pacific, North Zone and mountainous North Caribbean, extreme 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

Rebeca Morera R
Meteorologist
DMSA-IMN