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...
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...
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...
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...
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...
Weather warnings history
In this section you will find the weather warnings history.
Weather Warning -IMN-031022 11:30 am
Oct
03
Weather Warning
Isolated showers but accompanied by a strong electrical storm for this afternoon
October 3, 2022
11:30 a.m.
Diagnosis: Today, Monday, the local factors of warm temperatures and contributions of humidity from maritime sectors will be causing showers accompanied by an isolated but strong electrical storm for today's afternoon.
Forecast: Showers accompanied by scattered to isolated electrical storms are expected for the afternoon in mountainous sectors of the South and Central Pacific, the Nicoya Peninsula and towards the center-west of the Central Valley. The estimated accumulated will be isolated, but no less important. They will be 30 – 50 mm, with maximum props of 70 mm. For the North Zone there will be variable rains on the mountains with amounts less than 40 mm, while for the Caribbean regions the rains will be concentrated on the mountainous sectors of the west, with amounts between 20 - 45 mm.
Warning: High levels of saturation persist in the soils of the mountainous regions of the North Pacific and Central and South Pacific, as well as sectors of the western North Caribbean region.
Due to the above, the IMN recommends:
• Caution due to sewage saturation and possible sudden flooding.
• Prevention before an electrical storm and seek refuge in a safe place in the event of strong gusts of wind appearing or being perceived near storm clouds, due to the possible fall of tree branches, power lines, among others.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute CR and the WEB Page: www.imn.ac.cr.
Jose Pablo Valverde Mora
Meteorologist
DMSA-IMN
