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...

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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,...

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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...

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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...

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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...

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Weather warnings history

In this section you will find the weather warnings history.

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Informe Meteorológico #12-IMN-220120-Afectación por empuje frío #17 continuará este miércoles

Jan

22

Meteorological Report #12

Meteorological report # 12-IMN-220120-Cold thrust affectation # 17 will continue this Wednesday

january 22, 2020
9:30 am

Diagnosis: The cold push # 17 is located on the country, as a result, strong gusts have occurred in the areas of Guanacaste (maximum between 40-65 km / h), the Central Valley (40-55 km / h) and the mountain ranges (60-75 km / h). On the other hand, the influence of this atmospheric phenomenon has favored the formation of layers of medium and high cloudiness over a large part of the national territory, generating cool temperatures in addition to drizzles in mountainous areas and the Caribbean slope with amounts recorded between 5-10 mm.

Forecast: Throughout this day you will have a moderate wind pattern with occasional gusts in the areas of Guanacaste, the Central Valley and the mountain ranges. The maximum speeds are estimated between 40-60 km / h for the low parts and between 60-85 km / h in the mountains.

In addition, isolated rains and drizzles will continue to be recorded during this Wednesday in the Caribbean, North Zone and mountain ranges of the country with maximum amounts estimated between 10-50 mm in periods of 12 hours. Possible higher accumulations are not ruled out locally. For isolated areas of the Central Valley and coastal parts of the Pacific, isolated showers are expected during the afternoon with maximum amounts estimated between 5-15 mm.

Due to the persistence of the rain in the Caribbean and the North Zone during the last days the soils are saturated; therefore, special attention is recommended to areas with vulnerability to floods and to be aware of the official communiqués of the National Emergency Commission, as well as of the official entities.

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.
  • • Caution in areas vulnerable to flooding due to sewer saturation, increased flow in rivers and streams, and in areas prone to landslides.
  • • Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute and the Website: www.imn.ac.cr

Next report today at 7:00 pm.

Roberto Vindas
Meteorologist
DMSA-IMN