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...

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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...

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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...

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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...

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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...

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Aviso Meteorológico-IMN-270720-0240pm

Jul

27

Weather Warning

July 27, 2020
02.40 p.m.

Discussion The proximity of the Intertropical Convergence Zone, the warm morning temperatures and the entry of sea breezes have generated in the early hours of this afternoon cloudy developments and at the same time heavy downpours with gusts of wind and thunderstorms in the South Pacific, sectors mountainous of the Central Pacific, as well as in the Central Valley with accumulated between 10-25 mm in the last two hours.

Forecast: In the remainder of the afternoon there will be rains of variable intensity, heavy showers with thunderstorms in the Pacific, North Zone, Central Valley regions; accumulated 40-60 mm, higher amounts are possible in a localized way. In the Caribbean, rains are expected in the mountainous sectors with accumulated between 10-30 mm.

The precipitations will extend to the first hours of the night in the Pacific -especially coastal areas-, as well as in the North Zone with amounts between 20-50 mm. In the Central Valley and mountains of the Caribbean, scattered weak rains are possible, accumulated 5-15 mm.

The incursion of tropical wave # 23 is estimated in the early hours of this Tuesday, which can generate a reinforcement in rainy activity, mainly in the afternoon and evening periods. During the morning cloudiness and possible rains are expected in the Caribbean and the North Zone. In the afternoon, heavy rains and showers are expected in the Pacific and Central Valley regions.

Warning: Considerable soil saturation is maintained in sectors of the North and South Pacific, as well as in the North Zone; therefore, special attention is requested.

Due to the above, the IMN recommends:

  • Caution in areas vulnerable to flooding due to increased flow in rivers and streams.
  • 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.
  • Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEBSITE: www.imn.ac.cr

Rebeca Morera R
Meteorologist
DMSA-IMN


By Rebeca Morera 7/27/20 7/27/20 7/27/20