Weather warnings
Jul
11
Weather Warning
Tropical wave #14 over Costa Rica this Friday
July 11th, 2025
9:50 a.m.
Diagnosis: The high humidity level across the country and the current instability are a result of Tropical Wave 14, which is positioned over the country this morning. Scattered showers have...
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...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-160220-0935am
Feb
16
Aviso Meteorológico
Very strong windy conditions on this day
February 16, 2020
09.35 a.m.
Discussion: High levels of atmospheric pressure prevail over the Caribbean Sea, generating very strong trade winds in the country. The most intense gusts occur in the Central Valley, the North Pacific and the mountain ranges, with maximums between 60-92 km/h. Product of the wind drag enters cloudiness towards the North Zone and province of Limón causing intermittent rains with accumulated between 10-20 mm in the last 8 hours.
Forecast: On this day wind gusts between strong and intense are expected; maximum speeds are estimated between 40-75 km/h in the Central Valley and the lower parts of Guanacaste; in the mountainous sectors of these regions they can reach between 90-115 km/h. It is anticipated that the very windy pattern will continue at the beginning of the week.
Intermittent rains of variable intensity will be manifested in the Caribbean and North Zone throughout this Sunday; accumulated between 20-50 mm. In addition, drizzles are possible in the mountains of the North Pacific, east and north of the Central Valley, with amounts less than 10 mm. In the rest of the country it will remain stable and predominantly dry.
Due to the above, the IMN recommends:
- Extreme precautions due to strong winds and their possible impact on roofs, electrical wiring, signs, trees; as well as in the mountainous parts of the country (national parks, volcanoes).
- Caution for boats by choppy sea and very strong waves in the North Pacific, Gulf of Nicoya, Central Pacific and the Caribbean Sea, as well as air navigation due to turbulence over the mountainous sectors.
- Avoid burning of all kinds as they can get out of control.
- Stay informed through social networks, Twitter: @IMNCR, Facebook: CR National Meteorological Institute and the Website: www.imn.ac.cr
Rebeca Morera R
Meteorologist
DMSA-IMN
