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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Weather warnings history

In this section you will find the weather warnings history.

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Weather Warning IMN 21102020 02:30 a.m.

Oct

21

Weather Warning

Rainy conditions during tonight - early morning in the national territory October 21, 2020 03:00 a.m.

October 21, 2020
02:30 a.m.


Diagnosis: this Wednesday the positioning of the Intertropical Convergence Zone, the unstable atmosphere and the entry of humidity from the Pacific are factors that favor rainy conditions. During the night-early morning there were rainy conditions of variable intensity in most of the national territory. The largest amounts are registered in the South Pacific, Central Pacific, the Caribbean and the North.

Forecast: Generalized rain conditions of variable intensity over the country will continue for the rest of the morning.

Warning: Special attention for possible incidents due to saturation of soils in the South Pacific, in the upper parts of the North Zone, the Central Pacific and the mountainous Caribbean.

Due to the above, the IMN recommends:

• Caution in areas vulnerable to flooding due to sewerage saturation.
• Take shelter in a safe place in case you hear an electrical storm or perceive strong gusts of wind near the storm clouds, as well as caution against possible falling tree branches, power lines, among others.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr

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