Weather warnings
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...
Jun
28
Weather Warning
Tropical Wave #10 over Costa Rica
June 28th, 2025
10:30 a.m.
Diagnosis: Tropical wave #10 is over the country this Saturday, causing instability in maritime areas of the Caribbean and northern parts of the Northern Zone. There has been increasing...
Jun
27
Weather Warning -Update-
Rainy Afternoon in Costa Rica
June 27th, 2025
05.40 p.m.
Forecast: After the passage of Tropical Wave 9 yesterday, Thursday, the atmosphere remains unstable over the country. Along with warm morning temperatures and high humidity from recent rains,...
Jun
27
Weather Warning
Tarde lluviosa en Costa Rica
June 27th, 2025
10:00 am
Diagnosis: After the passage of tropical wave #9 on Thursday, the atmosphere continues to be unstable over the country, which, together with the warm temperatures of this morning and the high...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-280920-Actividad lluviosa y eléctrica en esta tarde en el Pacífico Central y Sur
Sep
28
Weather Warning
Rainy and electric activity this afternoon in the Central and South Pacific
September 28, 2020
10:40 a.m.
Diagnosis: The gradual increase in temperatures during the morning period, together with the entry of humidity and little cloudiness, will favor the development of cloudiness and the occurrence of downpours and electrical storm over the country towards the afternoon hours.
Forecast: For this afternoon, downpours with a thunderstorm are forecast in all Pacific regions, especially in the Central and South Pacific, the highest amounts are estimated, which are between 15-55mm with possible higher amounts in a timely manner, in addition, very electrical activity is expected. punctual with downpours located to the west and center of the Central Valley with rains of variable intensity for the sectors to the east, in total amounts between 5-40mm are estimated for this region with possible higher amounts on a specific basis also for the North Zone and Caribbean sectors they estimate amounts between 5-25mm in the form of isolated rains during the afternoon.
During the first hours of the night, the rains will continue, especially in coastal areas of the Pacific and Central Valley, amounts between 5-35 mm with possible higher amounts of a specific nature.
Warning: Special attention due to high percentage of soil saturation and risk of landslides in the Central and South Pacific.
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
Daniel Chacon Fernandez
Meteorologist
DMSA-IMN