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 Meteorológico-IMN-080720-0600pm
Jul
08
Aviso Meteorológico
This Thursday the tropical wave # 18 will be passing through Costa Rica
July 8, 2020
6.00 pm
Diagnosis: Tropical wave # 18 this Wednesday over Panama and will arrive in the country during the early hours of Thursday. This system increases atmospheric instability over Costa Rica, and expects it to generate rainfall throughout the day.
Forecast: There is a probability of rain from the early morning hours in the Northern Caribbean and Northern Zone regions until the early hours of the morning, mainly near the coast and the border sector.
On the Pacific side, the heaviest rainfall started in the afternoon and during the first hours of the night, mainly in the South Pacific and Central Pacific regions.
On the other hand, in the Central Valley it would perceive weak rains in the mountains to the north in the morning; and isolated afternoon showers in the west of the region.
Warnings: Special attention in the North Zone and the North Caribbean, mainly near the border and coastal sector in the morning.
Due to the above, the IMN recommends:
• Caution in areas with reduction to floods due to increased flow in rivers and streams.
• Take refuge in a safe place in case of hearing an electrical storm or perceiving strong gusts of wind near storm clouds, as well as precaution for 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
Juan Diego Naranjo Díaz
Meteorologist
DMSA-IMN
