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...
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...
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...
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...
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...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Informativo-IMN-311020- 1130am
Oct
31
Informative Meteorological Warning
High probability of a tropical cyclone in the next 48 hours
October 31, 2020
11.30 a.m.
Discussion: The atmospheric disturbance (tropical wave # 50) remains over the Caribbean Sea between Hispaniola Island and Lake Maracaibo, it is moving west towards Central America. This system has a high potential for development in a 90% tropical cyclone in the next 48 hours.
Forecast: The latest analyzes indicate its possible trajectory through the center of the Caribbean Sea, in addition to the interaction with other atmospheric systems, its position and strengthening, there is a high probability of indirect influence on Costa Rica, favoring a rainy scenario as of this Sunday 1 November and beginning of next week, especially in the Central and South Pacific.
The IMN will keep a strict follow-up of the evolution of said disturbance and will inform in a timely manner of any variation of the same and its possible influence on the country.
Therefore, the IMN recommends:
- Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr
Rebeca Morera R
Meteorologist
DMSA-IMN
