Weather warnings

Jun

28

Weather Warning

Tropical Wave #10 over Costa Rica

June 28th, 2025
10:30 a.m.

Diagnosis: Tropical wave #10 is over the country this Saturday, causing instability in maritime areas of the Caribbean and northern parts of the Northern Zone. There has been increasing...

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Jun

27

Weather Warning -Update-

Rainy Afternoon in Costa Rica

June 27th, 2025
05.40 p.m.

Forecast: After the passage of Tropical Wave 9 yesterday, Thursday, the atmosphere remains unstable over the country. Along with warm morning temperatures and high humidity from recent rains,...

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Jun

27

Weather Warning

Tarde lluviosa en Costa Rica

June 27th, 2025
10:00 am

Diagnosis: After the passage of tropical wave #9 on Thursday, the atmosphere continues to be unstable over the country, which, together with the warm temperatures of this morning and the high...

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Jun

26

Weather Warning | Update

Rainfall activity of varying intensity this afternoon in the Pacific and Northern Zone

June 26, 2025
5:00 p.m.

Diagnostic: The passage of Tropical Wave #9, in combination with the Intertropical Convergence Zone, maintains atmospheric instability over the country. This has generated rain showers and...

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Jun

26

Weather Advisory

Variable intensity rainfall expected this afternoon, in the Pacific and North Zone

June 26th, 2025
9:50 a.m.

Diagnostic: Tropical Wave 9, located in the Pacific near the country, is still unstable in its surroundings. Along with the Intertropical Convergence Zone over southern Central America, it will...

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Aviso Meteorólogico IMN 210520

May

21

Weather Warning

Rainy conditions will be present during the afternoon and evening

May 21, 2020
0900 am

Diagnosis: the proximity of the Intertropical Convergence Zone, the weakness of the trade winds are factors that favor evening rains.

Forecast: during the afternoon and night there will be intermittent rains and showers with possible isolated thunderstorms on the Pacific and Central Valley slopes, as well as in the mountainous sectors of the Caribbean and the Northern Zone. The amounts of rain estimated in the Pacific will be between 15-70 mm in 12-hour periods, in the Caribbean and the North Zone the amounts will be between 10-60 mm and in the Central Valley amounts between 5-35 mm are expected in periods of 3 hours.

The coastal Caribbean and surrounding areas will have very little rainfall in most of the region. It is estimated that rainfall can extend until the early hours of the night in the Pacific and mountainous areas of the country.


Due to the above, the IMN recommends:


    Caution in areas vulnerable to flooding due to sewerage saturation, increased flow in rivers and streams, and in areas 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


Daniel Poleo

Meteorologist

DMSA-IMN

 


By Daniel Poleo 5/21/20 5/21/20 5/21/20