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Weather Warning-IMN-260524

May

26

Weather Warning

Variable rains this afternoon in frequent sectors

May 26, 2025
10:00 a.m.

Diagnosis: The Intertropical Convergence Zone is located over Costa Rica and Panama, bringing moisture from both sides. The presence of trade winds in the central Caribbean Sea and local factors are favoring unstable conditions this early week. During the early morning and early morning hours, scattered rains have occurred in parts of the northern Caribbean and the Northern Zone, with accumulated rainfall of less than 15 mm over the last 6 hours.
 
Forecast: Cloudy conditions will occur during the morning and early afternoon, with very localized rain and showers along the Caribbean coasts and in the north-central part of the Northern Zone (accumulations between 5-30 mm). In the afternoon, cloudy conditions will occur over the mountains in the west and south of the northern Caribbean, with possible isolated showers with accumulated rainfall of 15-40 mm, with maximums of up to 65 mm. On the Pacific side, scattered rain and showers with thunderstorms are forecast for the mountains of the South Pacific (Buenos Aires, Potrero Grande, Coto Brus, Corredores) and the Central Pacific (Parrita, Quepos, southwest of the Los Santos Zone, and Pérez Zeledón). Estimated accumulated rainfall is expected to be between 25 and 50 mm (1.0–2.0 in), with highs of 70 and 90 mm (2.7–3.5 in). In the North Pacific, these rains will be more localized, over the mountains of southeastern and northeastern Puntarenas and the southern Nicoya Peninsula, with rainfall similar to the rest of the Pacific. The Central Valley will experience rain in the east with scattered showers and showers with thunderstorms in the west. Amounts range from 10 to 30 mm (0.4–1.2 in), with highs of 50 mm (2 in).
 
Warning: Soils saturated between 85-97% are present in both the South Pacific (mountainous areas and around the Golfo Dulce) and the North Caribbean plain. This situation increases the risk of flash flooding in low-lying areas and small landslides in mountainous areas.
 
Due to the above, the IMN recommends:
• Be cautious about sewer saturation in areas prone to this type of flooding.
• Prevent from thunderstorms and seek shelter in a safe place if strong wind gusts occur or are felt near storm clouds, due to the possible fall of tree branches, power lines, etc. These gusts can reach 80 km/h in some isolated cases.
• Stay informed through social media: Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR, and the website: www.imn.ac.cr
 
Jose Valverde Mora
Meteorologist
DMSA-IMN

 


5/26/25 5/26/25 5/26/25 By Meteórologo de Turno

Weather warnings history

In this section you will find the weather warnings history.

May

28

Weather Warning

Tropical Wave #3 over Costa Rica this Wednesday

May 28, 2025
10:00 a.m.

Diagnosis: Tropical wave #3 will cross Costa Rica during the course of Wednesday, increasing the atmospheric instability over the country and reinforcing rainfall for this afternoon and evening. ...

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May

27

Weather Warning

Tropical Wave 3 will move over Costa Rica this Wednesday

May 27, 2025
07.00 p.m.

Discussion: Tropical Wave 3 is moving over eastern Panama. This system will continue its westward movement, entering Costa Rica on Wednesday. This, along with local factors such as morning...

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May

26

Weather Warning (Update)

Variable rainfall in recurring areas.

May 26, 2025
6:05 p.m.

Diagnosis: The Intertropical Convergence Zone is located over Costa Rica and Panama, bringing moisture from both sides. Along with the presence of trade winds in the central Caribbean Sea and...

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May

26

Weather Warning

Variable rains this afternoon in frequent sectors

May 26, 2025
10:00 a.m.

Diagnosis: The Intertropical Convergence Zone is located over Costa Rica and Panama, bringing moisture from both sides. The presence of trade winds in the central Caribbean Sea and local factors...

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May

25

Aviso Meteorológico (Actualización)

Zona de convergencia intertropical activa sobre Costa Rica -ACTUALIZACIÓN--

25 de mayo de 2025
6:00 p.m.

Diagnóstico: La Zona de Convergencia Intertropical se encuentra activa y sobre Costa Rica este domingo, generando con esto inestabilidad atmosférica sobre en el país. Desde la mañana, se han...

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May

25

Aviso Meteorológico

Zona de convergencia intertropical activa sobre Costa Rica

25 de mayo de 2025
12 m.

Diagnóstico: La Zona de Convergencia Intertropical se encuentra activa y sobre Costa Rica este domingo, generando con esto inestabilidad atmosférica sobre en el país y por esto, predomina el...

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May

24

Aviso Meteorológico

Precipitaciones este sábado en ambas costas del territorio nacional

24 de mayo de 2025
10:30 am

Diagnóstico: El ambiente húmedo en el que se encuentra el país junto a la instabilidad que genera la cercanía de la Zona de Convergencia sobre Costa Rica, facilita presenten lluvias desde la...

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May

23

Weather Warning (Update)

Rain and thunderstorms expected this Friday

May 23, 2025
5:00 p.m.

Diagnosis: An increase in ambient humidity, coupled with the proximity of the Convergence Zone and local factors, have favored the presence of heavy downpours with thunderstorms in several parts...

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May

23

Weather Warning

Rain and thunderstorms expected this Friday

May 23, 2025
10.00 a.m.

Discussion: An increase in ambient humidity, along with the proximity of the Convergence Zone and local factors such as breeze entry and morning warming, will facilitate cloudiness and...

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May

18

Weather Warning

Scattered showers and thunderstorms this Sunday in recurring sectors

May 18, 2025
09:40 a.m.

Diagnosis: Local factors such as humid Pacific breezes and warm temperatures will favor scattered showers with thunderstorms this Sunday afternoon in areas where significant rainfall has occurred...

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