Weather warnings
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...
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...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-290620-10.30am
Jun
29
Weather Warning
Rainy conditions by tropical wave pass # 13
June 29, 2020
9.30 a.m.
Diagnosis: the proximity of the intertropical Convergence Zone, as well as the passage of tropical wave # 13 and the unstable atmosphere are factors that favor rainy conditions in the region.
Forecast: In the afternoon storm showers are expected along the Pacific coast, with estimated amounts between 25-70 mm, particularly in the Central and North Pacific.
In the North Zone and Central Valley, isolated rains will appear intermittently during the afternoon and at night, with estimated amounts of 15-30 mm.
In the Caribbean regions, there will be rainy conditions in the mountainous regions during the afternoon and night, in the coastal sectors the rains will be much more isolated.
Warning: Special attention sensitive places after yesterday's rains such as the North and Central Pacific, as well as in the mountainous sectors of the North Zone.
Due to the above, the IMN recommends:
Caution in areas vulnerable to flooding due to sewerage saturation.
Take refuge in a safe place in case of listening to a thunderstorm or perceiving strong gusts of wind near storm clouds, as well as caution for possible falling tree branches, power lines, among others.
Attention on the main national highways, such as route 27 and route 32.
Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEBSITE: www.imn.ac.cr
Daniel Poleo
Meteorologist
DMSA-IMN
