Weather warnings

May

31

Aviso Meteorológico (Actualización)

Lluvias variables en el país este sábado y onda tropical #4 mañana domingo

31 de mayo de 2025
5 pm

Diagnóstico: Este fin de semana la Zona de Convergencia Intertropical se muestra activa nuevamente frente al Pacífico costarricense; lo cual ha ocasionado aguaceros en el Pacífico Sur y eventos...

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May

31

Weather Warning

Variable rains in the country this Saturday and tropical wave #4 tomorrow Sunday

May 24, 2025
11.40 am

Forecast: This weekend, the Intertropical Convergence Zone (ITC) is active again off the Costa Rican Pacific, causing downpours in the South Pacific and intermittent rain events in the Central...

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May

30

Weather Warning

Variable morning rains this Friday in the Caribbean regions

May 30, 2025
7:30 a.m.

Diagnosis: High humidity levels in southern Central America, combined with instability in the upper troposphere in the region, have favored variable rainfall in the Caribbean and parts of the...

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May

29

Aviso Meteorológico

Lluvias variables este jueves

29 de mayo de 2025
11:00 am

Diagnóstico: Condiciones propicias para la ocurrencia de lluvias variables se presentan sobre el país este día. Esto debido a varios factores: inestabilidad en la atmósfera alta, la presencia de...

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May

28

Weather Warning (Update)

Tropical Wave #3 over Costa Rica this Wednesday

May 25, 2025
6.15 pm

Forecast: Tropical Wave 3 is crossing Costa Rica this Wednesday, increasing instability in its wake. In recent hours, heavy downpours have been recorded on the Pacific coast. This is more...

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Weather warnings history

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Weather Warning-IMN-040225-10.40.00 a.m.

Feb

04

Weather Warning

Windy conditions persist this week

February 4, 2025
10:40 a.m.

Diagnosis: High levels of atmospheric pressure north of the Caribbean Sea basin favor windy conditions in the national territory. This Tuesday, maximum gusts between 60 km/h and 89 km/h were recorded in central and northern Guanacaste. In the Central Valley and other central mountainous areas, between 40 km/h and 72 km/h. Mostly stable conditions are present in the national territory, with no significant rainfall in the last 12 hours.

Forecast: Atmospheric pressure will remain high for much of this week, which favors the occurrence of strong to very strong gusts towards the mountains, in the center and north of the national territory on Tuesday. In the lower areas of the Central Valley and the North Pacific, gusts of between 30 km/h and 60 km/h are expected, while in the north of Guanacaste and the mountains, gusts of between 60 km/h and 95 km/h are expected (with the possibility of occasional slightly higher gusts in these areas). On the other hand, this Tuesday, the country will be mostly stable. However, it is possible that the incursion of cloudiness towards the south of the South Pacific in the afternoon will generate scattered showers, with accumulations close to 30 mm in periods of 3 to 6 hours.

Warning: Special attention in the mountains and in the surrounding low areas, due to the presence of strong to very strong gusts.

Due to the above, the IMN recommends:

• Prevention due to wind gusts and their possible damage to roofs, electrical wiring, signs, trees; as well as in the mountainous parts of the country and Guanacaste (national parks, volcanoes).

• Caution in air navigation due to increased turbulence, as well as in maritime navigation due to increased rough seas, especially in the North Pacific, Gulf of Nicoya and northern Central Pacific.

• Avoid fires of any kind, as they can get out of control.

• Caution due to saturation of sewers in places prone to this type of flooding, as well as increased flow in rivers and streams.

• Stay informed through social networks: Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the website: www.imn.ac.cr

Jose Valverde Mora.

Meteorologist

DMSA/IMN