Weather warnings
May
08
Meteorological Warning Update
(Update) Showers and thunderstorms during the afternoon and early morningmeras horas de la noche
May 8, 2025
6:00 pm
Forecast: Rainy conditions have been observed this afternoon on the Pacific coast, much of the Central Valley, and mountainous areas of the Caribbean and the Northern Zone, due to the activity of...
May
08
Weather Warning
Showers and thunderstorms during the afternoon and early evening
May 08, 2025
10.30 a.m.
Discussion: The Intertropical Convergence Zone remains located over Costa Rica, generating significant moisture and instability. This, along with morning warming and the arrival of sea breezes,...
May
07
Aviso Meteorológico Actualización
(Actualización) Lluvias y aguaceros fuertes en el Valle Central y la vertiente del Pacífico
7 de mayo de 2025
6:20 pm
Diagnóstico: La Zona de Convergencia Intertropical sobre el país, en conjunto con factores locales como el calentamiento diurno y el ingreso de humedad desde el Océano Pacífico, favorecerá...
May
07
Weather Warning
Heavy rain and downpours in the Central Valley and the Pacific slope
May 7, 2025
09:35 a.m.
Diagnosis: The Intertropical Convergence Zone (ITCZ), combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, will favor variable rainfall throughout...
May
06
Weather Warning (Update)
Heavy showers this afternoon and early evening in the country
May 6, 2025
6:20 p.m.
Diagnosis: The proximity of the Intertropical Convergence Zone, combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, has favored heavy downpours...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-050120-0940am
Jan
05
Weather Warning
Cold surge # 14 causes strong winds in the country
January 05, 2020
09.40 a.m.
Discussion: On this day the influence of cold surge # 14 is maintained; Its main effect on the country is the intense winds recorded in the last hours. The most significant gusts have reached speeds of up to 106 km/h in La Cruz de Guanacaste, Liberia and Santa Cruz 70 km/h, Ciudad Colón 78 km/h, Cerro Chitaría 87 km/h, Heredia 70 km/h, Alajuela 79 km/h In addition, intermittent rains manifested during the early morning in the Caribbean and North Zone with amounts between 5-15 mm.
Forecast: The windy pattern will continue intense throughout this Sunday, maximum gusts are expected between 80-100 km/h in Central Valley, North Pacific and the mountain ranges. Gusts of strong winds will also be perceived in the mountains of the Central and South Pacific.
As for the rains, in the remainder of the morning and during the afternoon isolated rains are expected in the mountainous sectors of the Caribbean and the North Zone, accumulated between 10-20 mm. At night in these regions rains can be generalized and maintained intermittently with amounts between 20-40 mm. They are possible and drizzle in the north and east of the Central Valley, as well as in the north of Guanacaste, accumulated less than 5 mm.
It is estimated that these weather conditions associated with the cold surge would be maintained at least on Monday, reducing their impact on Tuesday.
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 in areas vulnerable to flooding due to sewer saturation, increased flow in rivers and streams, and in areas prone to landslides.
- 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: National Meteorological Institute and the Website: www.imn.ac.cr
Rebeca Morera R
Meteorologist
DMSA-IMN
