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-140224-0840am
Feb
14
Weather Warning
Strong winds for this Wednesday
February 14, 2024
8:40 a.m.
Diagnosis: Cold Surge #17 maintains high levels of atmospheric pressure in the Caribbean Sea basin. Windy conditions have been recorded during the early morning and morning of this Wednesday, the strongest gusts have been recorded in the north of Guanacaste, which have reached 87.7 km/h in La Cruz, 84.1 km/h in Volcán Orosi and 83.7 km/h h in Guayabo. Additionally, in mountains of the Central Valley between 65 km/h and 78.8 km/h, 64.4 km/h in Belén and 63.9 km/h in Pavas, among others.
Forecast: Windy conditions and strong to very strong gusts will continue this Wednesday in the center and north of the country. Strong gusts of intensity (40-60 km/h) are anticipated for the Central Valley and lower sectors of Guanacaste, as well as very strong gusts (70-90 km/h) for northern Guanacaste and the mountains. These conditions are expected to continue until early Friday. During the period from Friday to Saturday, a gradual reduction in wind is expected.
Stable conditions and little precipitation remain for this day. Only the development of occasional rain would be possible during the late afternoon and evening hours in the Northern Zone and Caribbean regions. The amounts should not exceed 15 mm in 12 hour periods.
It is necessary to clarify that no influence on temperatures is observed due to Cold Thrust #17 because the cold and dry mass associated with the frontal system is located north of Central America and over the Gulf of Mexico.
Warning: Special attention due to very strong gusts of wind in the North Pacific and the Central Valley. Special attention also in the mountainous sectors of the Caribbean and Northern Zone due to the saturation of the soils caused by the persistence of rains in recent days.
Due to the above, the IMN recommends:
• Prevention of wind gusts and their possible impact on roofs, electrical wiring, signs, trees; as well as in the mountainous parts of the country and Guanacaste (national parks, volcanoes).
• Caution in air navigation due to increased turbulence, as well as in maritime navigation due to increased rough seas, especially in the North Pacific, Gulf of Nicoya and northern Central Pacific.
• Avoid burning of all types, as they can get out of control.
• Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute CR and the WEB Page: www.imn.ac.cr
Paulo Solano
Meteorologist
DMSA-IMN
