Weather warnings
Aug
31
Weather Warning (Update)
Afternoon rain and thunderstorms in several regions of the country
August 31, 2024
5:15 p.m.
Diagnosis: Unstable and humid conditions will continue on Saturday due to an active Intertropical Convergence Zone over our country. Since early afternoon, the presence of scattered showers...
Aug
31
Weather Warning
Afternoon rain and thunderstorms in several regions of the country
August 31, 2024
10:00 am
Diagnosis: On Saturday, unstable and humid conditions will continue due to an active Intertropical Convergence Zone over our country. Since early in the morning, the presence of showers in...
Aug
30
Aviso Meteorológico (Actualización)
Aguaceros en el Pacífico esta tarde (Actualización)
30 de agosto de 2024
5:30 p.m.
Diagnóstico: Condiciones atmosféricas más inestables están presentes este viernes sobre el país, esto debido a la actividad de la Zona de Convergencia Intertropical y a un mayor contenido de...
Aug
30
Aviso Meteorológico
Aguaceros en el Pacífico esta tarde
30 de agosto de 2024
2:00 pm
Diagnóstico: Condiciones atmosféricas más inestables están presentes este viernes sobre el país, esto debido a la actividad de la Zona de Convergencia Intertropical y a un mayor contenido de...
Aug
27
Aviso Meteorológico (Actualización)
Aguaceros con tormenta vespertinos hacia sectores del centro y norte del país
27 de agosto de 2024
6.15 p.m.
Diagnóstico: La presencia de vientos alisios débiles posiciona la Zona de Convergencia sobre el país. Lo anterior sumado a los factores locales y a valores altos de humedad debió al paso de la...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-180724-Lluvias de variable intensidad durante este jueves y Onda Tropical #20 para este viernes
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 thunderstorms during this afternoon on the Pacific slope and west of the Central Valley. The maximum amounts recorded up to this time are in the South Pacific with values between 50-70 mm in places such as Neily, Buenos Aires, Osa and Río Claro.
Forecast: The analysis of satellite and radar images shows convective nuclei developing in the Nicoya Peninsula, coastal sectors of the Central Pacific and in the South Pacific, so it is expected that these regions will continue with variable rainfall, including showers with thunderstorms during the rest of this afternoon and early evening (approximately 2 to 4 more hours). Estimated amounts between 20-50 mm. Part of this cloudiness continues to project towards the west of the Central Valley, which will favor moderate rainfall in that area during the same period. Estimated amounts between 5-20 mm. In the rest of the country there is a possibility of occasional light rains, mainly in mountainous areas.
In addition, tropical wave #20 is passing through Panama and is expected to enter the national territory during the early morning period of this Friday. The passage of this system through the country together with the Intertropical Convergence Zone will be favoring atmospheric instability and precipitation in the country.In the early hours of Friday and part of the morning, mostly cloudy skies with scattered rains are expected for the Caribbean and South Pacific. In the afternoon, mostly cloudy skies are expected nationwide, as well as a high probability of heavy showers with storms on the Pacific slope, Central Valley and mountainous areas of the Caribbean and Northern Zone. These precipitations are expected to last until the early hours of the night.
Warning: Special attention should be paid to the Caribbean and Northern Zone regions, because the soils maintain high levels of saturation, which increases the vulnerability of the area. In addition, in urban areas, sewer saturation could cause 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
Roberto Vindas
MeteorologistDMSA-IMN
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