Weather warnings

May

18

Weather Warning

Scattered showers and thunderstorms this Sunday in recurring sectors

May 18, 2025
09:40 a.m.

Diagnosis: Local factors such as humid Pacific breezes and warm temperatures will favor scattered showers with thunderstorms this Sunday afternoon in areas where significant rainfall has occurred...

See More


May

17

Weather Warning

Scattered heavy downpours with thunderstorms this Saturday

May 17, 2025
10:20 a.m.

Forecast: The passage of Tropical Wave 2, along with local factors such as humid breezes from both sides and warm temperatures, will favor scattered showers and thunderstorms this Saturday...

See More


May

16

Aviso Meteorológico (Actualización)

Lluvias durante el final de la tarde del viernes

16 de mayo de 2025
4.30 p.m.

Diagnóstico: Persiste la inestabilidad atmosférica sobre el país debido a la cercanía de sistemas de baja presión asociados a la Zona de Convergencia Intertropical y factores locales típicos de...

See More


May

16

Aviso Meteorológico

Actividad lluviosa variable esta tarde de viernes

16 de mayo de 2025
11:00 am

Diagnóstico: Persiste la inestabilidad atmosférica sobre el país debido a la cercanía de sistemas de baja presión asociados a la Zona de Convergencia Intertropical. A esto se suman factores...

See More


May

15

Aviso Meteorológico (Actualización)

Aviso Meteorológico-IMN-150525-Condiciones lluviosas en esta tarde y noche (actualización)

15 de mayo de 2025
6:00 pm

Diagnóstico: La Zona de Convergencia Intertropical se encuentra próxima a Costa Rica y, junto con condiciones de inestabilidad en niveles altos de la atmósfera y factores locales, ha generado un...

See More


Weather warnings history

In this section you will find the weather warnings history.

« Back

Aviso Meteorológico-IMN-290820-10.30 am

Aug

29

Weather Warning

Tropical Wave #32

August 29, 2020
10.30 am

Diagnosis: Tropical wave # 32 is located at this time in western Panama, and it will be entering the country during the end of this Saturday afternoon. In addition, the Intertropical Convergence Zone is located on the national territory, maintaining instability in the region.

Forecast: The effect of tropical wave # 32 will be perceived only this Saturday in the country. Due to this, the afternoon rainfall in the Pacific and North Zone could be reinforced this Saturday, they are estimated to accumulate between 50-60 mm in periods of 6 hours. In addition, isolated rains and downpours with storm and fog are expected in the Central Valley in the late afternoon and early evening, amounts between 5 to 30 mm; In the case of the Caribbean, isolated rains could be generated in the afternoon and early evening, amounts between 10-25 mm.

Warning: Special attention to the Pacific slope and the North Zone, as well as the Central Valley, due to the saturated soils that these regions present due to the heavy rains this week.

Due to the above, the IMN recommends:

• Caution in areas vulnerable to flooding due to sewerage 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

Gabriela Chinchilla R
Meteorologist
DMSA-IMN