Weather warnings

Jul

19

Weather Warning

Tropical wave #20 moves over Costa Rica

July 19, 2024
10.20 a.m.

Discussion: The entry of tropical wave #20 has generated unstable atmospheric conditions over Costa Rica, favoring partial to total cloudiness this morning and early morning, as well as rain in...

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Jul

19

Aviso Meteorológico

Lluvias de variable intensidad en el país por el paso de la Onda Tropical #20

19 de julio de 2024
03:30 am

Diagnóstico: El paso de la onda tropical #20 junto con la Zona de Convergencia Intertropical favorecen la inestabilidad atmosférica y las precipitaciones durante la madrugada en el país. En...

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Jul

18

Meteorological Warning

Rains of variable intensity during this Thursday and Tropical Wave #20 for this Friday

July 18, 2024
5:00 pm

Diagnosis: The Intertropical Convergence Zone positioned over Costa Rica, in conjunction with local factors and a high content of precipitable water in the atmosphere, has favored showers with...

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Jul

18

Weather Warning

Rains of varying intensity during this Thursday

July 18, 2024
10:10 a.m.

Diagnosis: The Intertropical Convergence Zone is positioned over Costa Rica. This system, together with local factors and a high content of precipitable water in the atmosphere, will favor the...

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Jul

17

Aviso Meteorológico

Aguaceros con tormenta eléctrica en las costas del Pacífico esta noche

17 de junio de 2024
07:40 p.m.

Diagnóstico: El ingreso de la brisa marina desde tempranas horas y el calentamiento diurno propician la formación de nubes convectivas a lo largo de las costas del Pacífico durante esta tarde. En...

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Weather warnings history

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Aviso Meteorológico-IMN-080624-1030am

Jun

08

Weather Warning

Rains of varying intensity during the afternoon and night and tropical wave #7 for this Sunday

June 08, 2024
10.30 a.m.

Discussion: The extremely unstable atmospheric pattern continues over Costa Rica and surrounding areas, due to the combination of different elements, including: an active and nearby Intertropical Convergence Zone, systems in the upper atmosphere, the frequent passage of tropical waves and local factors. All of the above favors the presence of rainy activity of varying intensity during the afternoon and night in the country. Tropical wave #7 is located around 80°W (Panama) and is moving west.

Forecast: This afternoon and evening there will be again rainfall events of variable intensity and heavy downpours with thunderstorms; starting in the early hours of the evening over the mountainous axis and gradually extending towards the lower areas.

In the Central Valley, rains of variable intensity and possible thunderstorms are expected, the strongest in sectors of the North and East. Accumulations estimated between 20-50 mm in 6-hour periods. For the North Pacific, the North Zone and mountains of the Caribbean, rains and heavy downpours with thunderstorms are expected, amounts between 30 mm and 70 mm in 6-hour periods, higher accumulations are possible in a localized manner. In the Central and South Pacific, isolated showers are expected in the surroundings of the mountain ranges and border area with Panama, extending towards coastal areas. Estimated amounts between 10 mm and 45 mm.

Tropical wave #7 and its interaction with the Intertropical Convergence Zone will be reinforcing rainfall in the country this Sunday.

Warning: The rains projected for urban areas may once again be precursors to flooding and sewer saturation in already recurring areas. Saturated soils are recorded in the mountains of the South Pacific, Valle del General, the Northern Zone and the mountains of the Northern Caribbean, which is why these are regions vulnerable to landslides and possible flooding.

Due to the above, the IMN recommends:

  • Caution due to sewer saturation in places prone to this type of flooding.
  • Prevention against electrical storms and seek shelter in a safe place in case of strong gusts of wind near storm clouds, due to the possible fall of tree branches, power lines, among others. These gusts can reach 80 km/h in some isolated cases.
  • Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr

Rebeca Morera R
Meteorologist/DMSA-IMN