Weather warnings
Aviso Meteorológico-IMN-260724-Actividad lluviosa variable para esta tarde y noche en el país (actualización)
Jul
26
Weather Warning (Update)
Variable rain activity for this afternoon and evening in the country
July 26, 2024
3:35 p.m.
Diagnosis: Unstable atmospheric conditions caused by the proximity of the Intertropical Convergence Zone, high humidity content and local factors have generated rainfall this afternoon in several areas of the country. The most significant amounts are in the mountainous surroundings of San Ramón (70 mm), Buenos Aires (50 mm), Hojancha (40 mm) and Bribrí (35 mm).
Forecast: During the rest of the afternoon and during the night, these conditions are expected to continue, favoring the occurrence of rains of varying intensity accompanied by storms.
In the Nicoya Peninsula, Central Pacific and South Pacific, showers with thunderstorms are expected with estimated accumulations between 20 mm and 50 mm, with maximums between 50 mm and 80 mm in periods of 6-12 hours.
In the Central Valley and mountains of the Caribbean, rains of varying intensity are expected during the rest of the afternoon, with a tendency to decrease in the early hours of the night. The estimated accumulated rainfall is between 10 mm and 30 mm, with maximum accumulated rainfall between 30 mm and 50 mm in periods of 6-12 hours.
In the North Zone, heavy localized downpours may occur, mainly in mountainous areas and surrounding areas. The estimated accumulated rainfall is between 30 mm and 50 mm, with maximum accumulated rainfall between 50 mm and 70 mm in periods of 6-12 hours.
In addition, the passage of tropical wave number 21 is anticipated during next Saturday. This system may reinforce rainfall in the country during the afternoon and night.
Warning: Mountains in the North Zone and North Caribbean are prone to landslides due to high soil saturation and possible river overflows at the foot of the mountains. Likewise, on the Pacific side, attention should be paid in both peninsulas due to high levels of saturation. Special attention should also be paid in urban areas due to the possibility of flooding due to saturated sewers.
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
Paulo Solano
Meteorologist
DMSA-IMN
Weather warnings history
In this section you will find the weather warnings history.
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...
Aug
27
Weather Warning
Downpours with a thunderstorms this afternoon in the center and north side of the country
August 27, 2024
10:00 a.m.
Diagnosis: The presence of weak trade winds positions the Convergence Zone over the country. The above, added to local factors and high humidity values due to the passage of the tropical wave...
Aug
26
Weather Warning (Update)
Tropical wave #27 crossing Costa Rica this Monday
August 26, 2024
05.15 p.m.
Discussion: At this time, tropical wave #27 is in the West of Costa Rica, soon to reach the Pacific Ocean. As it passes over the country, it has generated isolated showers and thunderstorms in...
Aug
26
Weather Warning
Tropical Wave #27 crossing Costa Rica this Monday
August 26, 2024
12 m.
Diagnosis: Tropical wave #27 is crossing the national territory and will reinforce the atmospheric instability generated by local atmospheric conditions such as high temperatures and high humidity;...
Aug
25
Weather Warning
Afternoon rains and tropical wave number 27 moving forward
August 25, 2024
3:00 p.m.
Diagnosis: During this afternoon there have been scattered showers with thunderstorms, especially in the Central Pacific and South Pacific (border sectors with Panama). The maximum accumulated...
Aug
22
Weather Warning
Wet and unstable conditions with high probability of heavy and localized thundershowers
August 22, 2024
09:10 a.m.
Diagnosis: The presence of instability in the upper levels of the regional atmosphere, together with seasonal factors typical of the rainy season in the Pacific, such as the Intertropical...
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