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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Aviso Meteorológico-IMN-221120-Persisten las lluvias debido a influencia de sistema de baja presión

Nov

22

Weather Warning

The rains persist due to the influence of the low pressure system

November 22, 2020
10:30 a.m.

Diagnosis: The influence of the low pressure system off the Caribbean coast
North causes the Intertropical Convergence Zone to be located on the Coast
Rica, generating rains on the Pacific coast and the border with Nicaragua.
The amounts recorded up to this time, both in the North Pacific and the Pacific
Central range between 15 mm and 20 mm; while, in the South Pacific,
accumulated between 20mm and 40mm in a specific way. In the North Zone the
highest accumulated rainfall is found in the canton of Upala with a maximum of
60 mm.


Forecast: Due to the above, during the morning the rains will continue in the
Pacific slope and the North Zone with estimated amounts between 15-30mm with
maximum amounts up to 40 mm.
In the afternoon, on the Pacific slope, between 15-30mm are expected with maximum
40 mm, concentrating the rains in the North Pacific. For its part, in
Caribbean regions and the North Zone, rains in the vicinity of the mountains with
amounts between 10 mm and 20 mm with a maximum of 40 mm.
For the night, scattered rains are forecast in the country, with amounts between 10
mm and 20mm with maximums of 25mm.


In addition, the arrival of tropical wave # 54 is expected at the beginning of the night.
Warning: Special attention due to the North Pacific, Central Pacific and sector
mountainous in the North Zone and the Caribbean since they are the regions where
they await the heaviest rains.


Due to the above, the IMN recommends:


• Caution in areas vulnerable to flooding due to saturation of
sewerage.
• Take refuge in a safe place in case you hear a thunderstorm or perceive
strong gusts of wind near storm clouds, as well as caution
by possible fall of tree branches, power lines among others.
• Stay informed through social networks, Twitter: @IMNCR,
Facebook: CR National Meteorological Institute and the WEB Page:
www.imn.ac.cr


Juan Diego Naranjo placeholder image
Meteorologist
DMSA-IMN