Weather warnings

Jul

10

Weather Warning

Tropical Wave 14 to Pass Over Costa Rica This Friday

July 10, 2025
04.30 p.m.

Discussion: A change in the weather pattern toward more humid and unstable atmospheric conditions over Costa Rica and surrounding areas will increase the occurrence of rainfall in various parts...

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Jul

08

Informative Weather Notice

Sahara dust over the country

July 08th, 2025
9:50 a.m.

Diagnosis: Increases in atmospheric pressure in the Caribbean Sea accelerate the trade winds over the basin, as well as over central and northern Spain. Furthermore, a dry, stable air mass...

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Jul

07

Weather Warning

Heavy downpours during the afternoon in the Pacific and northern regions

July 07th, 2025
10.40 a.m.

Discussion: Tropical Wave 13 is located in western Costa Rica, close to entering the Pacific Ocean. Although it is a weak wave, its interaction with the Intertropical Convergence Zone increases...

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Jul

06

Aviso Meteorológico

Efectos de la onda tropical #13 en el país este domingo y lunes

06 de julio de 2025
11.25 am

Diagnóstico: La onda tropical #13 se localiza este domingo al oeste de Panamá, generando inestabilidad en el mar Caribe frente a la costa costarricense, lo que favorece lluvias en el Caribe Sur...

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Jul

01

Weather Warning

Rainy conditions in the Caribbean and Northern Zone this Tuesday and Tropical Wave #12

Jul 01th, 2025
10 am

Diagnosis The strengthening of the trade winds over the central and northern regions of the country has produced wind gusts of up to 50 km/h in areas such as Alajuela this morning. This...

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Weather warnings history

In this section you will find the weather warnings history.

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Informe Meteorológico N7-IMN-031020-Tormenta Tropical Gamma mantendrá afectación indirecta en el país durante el período nocturno

Oct

03

Weather Report

Tropical Storm Gamma will continue to affect the country indirectly during the night period

October 03, 2020
9:00 pm

Diagnosis: According to the National Hurricane Center (NHC), tropical storm Gamma at this time is located about 55 km northwest of the Tulum area in Quintana Roo, Mexico and is moving northwest with a speed of 13 km / h towards the Gulf of Mexico.

This system maintains an indirect impact on Costa Rica, causing a flow of humidity from the Pacific Ocean to our country, mainly affecting the North Pacific.

The maximum accumulated recorded at this time are: North Pacific (Santa Cruz with 79mm and Cañas with 65mm), Central Pacific (Herradura with 54mm), South Pacific (Cerro Buena Vista with 37mm), North Zone (Las Delicias with 64mm), Valle Central (Fraijanes with 42mm), North and South Caribbean (Juan Viñas with 15mm).

Forecast: During the rest of the night and early morning, rains of variable intensity will persist in the North Pacific, with occasional downpours, with estimated amounts between 20-50 mm in periods of 6 to 12 hours and possible higher amounts locally. In the Central and South Pacific, rains with occasional downpours and storms are expected, particularly in the sectors near the coast. The maximum accumulated are estimated between 15-45 mm with possible higher amounts located.

For the Central Valley (mainly towards the west and north), the North Zone and mountains of the Caribbean, rains with isolated showers and electrical storms, as well as fog banks, are expected. The maximum amounts are estimated between 10-35 mm with possible higher amounts on a specific basis.

Warning: Special attention in all regions of the Pacific (particularly the Guanacaste area), the North area, the upper parts of the Caribbean and the Central Valley (especially the west area), since due to the rains of the last days the soils remain saturated, a condition that increases the risk of incidents
Due to the above, the IMN recommends:

• Caution in areas vulnerable to flooding due to sewerage saturation.
• Caution on the main national highways due to reduced visibility.
• 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


The next report will be issued at 3:00 am.

Andres Gamboa
Meteorologist
DMSA-IMN