Weather warnings
May
04
Weather Warning
Rainy activity this afternoon and early evening
May 04, 2025
10.45 a.m.
Discussion: The unstable atmospheric pattern continues today, along with high humidity, associated with the proximity of the Intertropical Convergence Zone. These conditions create an ideal...
May
03
Weather Warning
Heavy rains and a thunderstorm this afternoon and early evening
May 03, 2025
10.25 a.m.
Discussion: The Intertropical Convergence Zone continues over the country, generating a high degree of instability and humidity. This, combined with the warm temperatures recorded this morning,...
May
02
Weather Warning
Intertropical Convergence Zone over the country this Friday
May 02, 2025
10.45 am
Diagnosis: Highly unstable conditions continue across the country this Friday. The ITCZ remains positioned over the country, contributing moisture to the Pacific and Central Valley since early...
May
01
Aviso Meteorológico
Actividad lluviosa en esta tarde y noche
01 de mayo de 2025
10.00 am
Diagnóstico: La Zona de Convergencia Intertropical se encuentra activa sobre el país. Esto favorece un panorama húmedo e inestable, idóneo para la presencia de nubosidad y la ocurrencia de...
Apr
30
Weather Warning
Rainy activity this afternoon and into the evening
April 30, 2025
10.20 a.m.
Discussion: The Intertropical Convergence Zone is beginning to show increased activity and is likely to remain close to Costa Rica. This favors a humid and unstable outlook, ideal for cloudiness...
Weather warnings history
In this section you will find the weather warnings history.
Aviso IMN 120420 11.15 am
Apr
12
Weather Warning
Rainfall in the country this Sunday
April 12, 2020
11.15 am
Diagnosis: The high temperatures registered this morning and the entrance of humidity from the Pacific Ocean, as well as the proximity of the Intertropical Convergence Zone are generating humidity entrance to the country today, rains have occurred on the Central Pacific coast this morning, as well as downpours in the North Caribbean and North Zone at the end of it.
Forecast: For this afternoon and during the night inclusive, it is estimated that the rainy and electrical activity will occur in the Central and South Pacific, amounts between 15-60 mm are expected in periods of 12 hours. In addition, downpours to mountainous areas and the vicinity of the Northern Zone are possible throughout the day, with amounts between 10-30 mm.
In the Central Valley the presence of isolated precipitations this afternoon is not ruled out, which could also present an electrical storm, accumulated between 5-25 mm. In the case of the North Pacific, this region will be maintained with scattered showers at the level of the Nicoya peninsula and in the mountains, with amounts between 5-35 mm. The Caribbean is anticipated with partly cloudy skies, there could be isolated rains in the mountains.
Due to the above, the IMN recommends:
• Caution in areas vulnerable to flooding due to sewerage saturation, especially in South Pacific regions due to the rains of the last hours.
• Take refuge in a safe place in case of listening to an electrical storm or perceiving strong gusts of wind near storm clouds, as well as caution for possible falling tree branches, power lines, among others.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEBSITE: www.imn.ac.cr
Gabriela Chinchilla
Meteorologist
DMSA-IMN
