Weather warnings

Jun

05

Weather Warning

Intertropical Convergence Zone over the country

June 5th, 2025
9:40 a.m.

Diagnosis: The Intertropical Convergence Zone is positioned over the country. This system, combined with high humidity, creates a favorable environment for rain and showers with thunderstorms...

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Jun

04

Aviso Meteorológico (Actualización)

Lluvias y aguaceros con tormenta para esta tarde (actualización)

4 de junio de 2025
5:00 pm

Diagnóstico: Las altas temperaturas registradas esta mañana, junto al aumento progresivo de la humedad en el ambiente, están generando condiciones atmosféricas favorecieron la formación de...

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Jun

04

Weather Warning

Rain and downpours with thunderstorms expected this afternoon

June 4th, 2025
9:55 a.m.

Diagnosis: The high temperatures recorded this morning, along with the progressive increase in humidity, are generating favorable atmospheric conditions for the formation of rain and showers with...

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Jun

03

Weather Warning (Update)

Favorable conditions for heavy downpours this Tuesday

03 de junio de 2025
06.10 p.m.

Discussion: Favorable atmospheric conditions for heavy rainfall are being recorded across the country this Tuesday. The high humidity from the recent rains and the high temperatures experienced...

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Jun

03

Weather Warning

Favorable conditions for heavy downpours on Tuesday

June 3th, 2025
10:00 a.m.

Forecast: Isolated showers with thunderstorms are expected along the Guanacaste and Central Volcanic mountain ranges, as well as the Central Pacific and South Pacific mountains, with estimated...

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Weather warnings history

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Aviso Meteorológico-IMN-0620-0240pm

Jul

07

Weather Warning

Heavy downpours this afternoon in the Central and South Pacific - Tropical Wave Arrival # 17 Tuesday night

July 07, 2020
02.40 p.m.

Discussion: Local factors such as the warm temperatures recorded in the morning period and the entry of the sea breeze have led to cloudy developments in the early hours of this afternoon and the presence of isolated showers with thunderstorms in the Central and South Pacific, with amounts between 10-20 mm.

Forecast: This afternoon and during the first hours of the night there will be isolated but heavy rains and showers accompanied by an electrical storm in the Central and South Pacific regions, amounts between 30-60 mm are estimated. In the rest of the country no significant rains are expected.

The incursion of tropical wave # 17 during the night of this day towards the early hours of Wednesday is estimated, which can generate a gradual increase in cloudiness and moderate rains in the North Zone, Caribbean, as well as in the South Pacific and Central, accumulated estimates between 25-50 mm.

Warning: Special attention in the Central Pacific due to high levels of saturation due to yesterday's rains

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