Weather warnings
May
08
Meteorological Warning Update
(Update) Showers and thunderstorms during the afternoon and early morningmeras horas de la noche
May 8, 2025
6:00 pm
Forecast: Rainy conditions have been observed this afternoon on the Pacific coast, much of the Central Valley, and mountainous areas of the Caribbean and the Northern Zone, due to the activity of...
May
08
Weather Warning
Showers and thunderstorms during the afternoon and early evening
May 08, 2025
10.30 a.m.
Discussion: The Intertropical Convergence Zone remains located over Costa Rica, generating significant moisture and instability. This, along with morning warming and the arrival of sea breezes,...
May
07
Aviso Meteorológico Actualización
(Actualización) Lluvias y aguaceros fuertes en el Valle Central y la vertiente del Pacífico
7 de mayo de 2025
6:20 pm
Diagnóstico: La Zona de Convergencia Intertropical sobre el país, en conjunto con factores locales como el calentamiento diurno y el ingreso de humedad desde el Océano Pacífico, favorecerá...
May
07
Weather Warning
Heavy rain and downpours in the Central Valley and the Pacific slope
May 7, 2025
09:35 a.m.
Diagnosis: The Intertropical Convergence Zone (ITCZ), combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, will favor variable rainfall throughout...
May
06
Weather Warning (Update)
Heavy showers this afternoon and early evening in the country
May 6, 2025
6:20 p.m.
Diagnosis: The proximity of the Intertropical Convergence Zone, combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, has favored heavy downpours...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico Informativo-IMN-141123-1150am
Nov
14
Informative Meteorological Warning
Formation of low pressure system in the middle of the week with cyclonic potential
November 14, 2023
11:50 a.m.
Diagnosis: There is a possibility of the formation of a low pressure system in the southwest of the Caribbean Sea towards the second half of this week, in the vicinity of the Caribbean of Central America.
According to the National Hurricane Center (NHC), a gradual development of this system is possible towards the weekend, with the possibility of the formation of a tropical cyclone with a possible northeastern trajectory, moving away from the region.
The possibility of developing a tropical cyclone is 20% in 48 hours and 70% within seven days (high possibility).
Forecast: Current analyzes and numerical models show high uncertainty. However, the possible influence of this system on the national territory is increasingly less because its possible formation would be near the Greater Antilles (far from our region). The IMN maintains strict uninterrupted surveillance and will immediately update information on the possible formation of this phenomenon and its eventual effects in Costa Rica.
Warning: Special attention in sectors with high soil saturation such as the South Pacific and North Zone.
Due to the above, the IMN recommends being attentive to the issuance of informative weather warnings that are published on: Twitter: @IMNCR, Facebook: National Meteorological Institute, WEB Page: www.imn.ac.cr
Next information notice: tomorrow at 12:00 m.
Paulo J. Solano S.
Meteorologist
DMSA-IMN
