Weather warnings

Jul

15

Informative Weather Advisory

Saharan Dust and Strong Wind Gusts Affecting Several Regions

July 15, 2025
9:00 am

  A dry air mass accompanied by Saharan dust is positioned over the Caribbean Sea and Central America. Additionally, a marked atmospheric pressure gradient is accelerating the trade winds...

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Jul

14

Aviso Meteorológico

Onda tropical #15 transitando este lunes por el país

14 de julio de 2025
10:00 AM

Diagnóstico: La onda tropical #15 ingresó al país durante la madrugada. Aunque es una onda débil, ha generado lluvias y tormentas en zonas marítimas del Pacífico Central, el Caribe y en áreas...

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Jul

13

Aviso Meteorológico Informativo

Tropical Wave #15 transiting over Costa Rica early Monday morning

July 13h, 2025
6 p.m.

Diagnosis: During the course of early Monday morning, tropical wave #15 will be passing over the national territory. Although it is a weak tropical wave, it will be interacting with the...

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Jul

11

Weather Warning

Tropical wave #14 over Costa Rica this Friday

July 11th, 2025
9:50 a.m.

Diagnosis: The high humidity level across the country and the current instability are a result of Tropical Wave 14, which is positioned over the country this morning. Scattered showers have...

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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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Weather warnings history

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Informe Meteorológico N5-Huracán Iota

Nov

15

Weather Report N ° 5

Hurricane Iota

November 15, 2020
8:00 a.m.

Diagnosis: Hurricane Iota (category 1) is located 615 km east-southeast of Cabo Gracias a Dios between Honduras and Nicaragua, its travel speed decreased this morning to 9 km / h, now it registers sustained winds of 140 km / h. Upon reaching its hurricane category, it tends to remain more compact, however, it maintains its interaction with the Intertropical Convergence Zone (ITCZ). The precipitation amounts for the last 12 hours are specified in the following table:

 


Forecast: Iota will continue to increase its intensity in the coming hours. It will be moving into the Caribbean Sea, expected to reach the Nicaraguan coast on Monday night. The main effect that it will have on our country this Sunday will be the modulation of the ITCZ, so it is expected that:


During this Sunday morning, the country remains stable, with little to partial warming and cloudiness, however, variable rains are expected in the south of the country, especially in the Osa and Golfito.


For the afternoon and evening, strong rainy activity will continue on the Pacific slope, particularly in the Central and South Pacific with amounts between 20-90 mm. In the case of the North Zone, the Central Valley, and the Caribbean mountains, strong and isolated showers with an electrical storm are expected, amounts between 20-50 mm.


The indirect influence of Hurricane Iota is expected to continue in the first days of next week.


Warning: Special attention in South Pacific regions due to high levels of saturation.


Due to the above, the IMN recommends:


    Caution in areas vulnerable to flooding due to sewerage saturation and increased flow in rivers and streams.
    Take shelter in a safe place in case of hearing 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


Next report: Sunday, 2 p.m.


Gabriela Chinchilla / Meteorologist / DMSA