Weather warnings
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...
Jul
08
Informative Weather Notice
Sahara dust over the country
July 08th, 2025
9:50 a.m.
Diagnosis: Increases in atmospheric pressure in the Caribbean Sea accelerate the trade winds over the basin, as well as over central and northern Spain. Furthermore, a dry, stable air mass...
Jul
07
Weather Warning
Heavy downpours during the afternoon in the Pacific and northern regions
July 07th, 2025
10.40 a.m.
Discussion: Tropical Wave 13 is located in western Costa Rica, close to entering the Pacific Ocean. Although it is a weak wave, its interaction with the Intertropical Convergence Zone increases...
Jul
06
Aviso Meteorológico
Efectos de la onda tropical #13 en el país este domingo y lunes
06 de julio de 2025
11.25 am
Diagnóstico: La onda tropical #13 se localiza este domingo al oeste de Panamá, generando inestabilidad en el mar Caribe frente a la costa costarricense, lo que favorece lluvias en el Caribe Sur...
Jul
01
Weather Warning
Rainy conditions in the Caribbean and Northern Zone this Tuesday and Tropical Wave #12
Jul 01th, 2025
10 am
Diagnosis The strengthening of the trade winds over the central and northern regions of the country has produced wind gusts of up to 50 km/h in areas such as Alajuela this morning. This...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-110820-1045am
Aug
11
Weather Warning
Rainy activity on this Tuesday
August 11, 2020
10.45 a.m.
Discussion: The Intertropical Convergence Zone is very active and close to the country, which is generating nuclei of cloudiness near the coasts and mainly entering the province of Limón.
Forecast: In the remainder of the morning, mostly cloudy conditions will prevail in much of the national territory; rains of variable intensity are estimated in the North Caribbean and North Zone, accumulated between 20-40 mm; the precipitations can even extend towards the South Caribbean.
During the afternoon the heaviest rains will be concentrated in the regions of the Central and South Pacific, Nicoya Peninsula, they will be accompanied by an electrical storm; Amounts between 30-60 mm are foreseen, possibly higher accumulated locally. In the North Zone, the Central Valley and mountains of the Caribbean, isolated rains and showers are expected, amounts estimated between 10-40 mm. The rains will continue until early at night in the Pacific and to a lesser extent in the Central Valley and North Zone.
Warning: The North Zone maintains high levels of saturation due to yesterday's rains, so attention to this region is recommended.
Due to the above, the IMN recommends:
- Caution in areas vulnerable to flooding due to sewer saturation.
- 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
Rebeca Morera R
Meteorologist
DMSA-IMN
