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.
Weather Warning-IMN-220824
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 Convergence Zone, will manifest during this Thursday. Since early in the morning, there have been scattered showers and downpours with short-duration thunderstorms in the Northern Zone and parts of the Caribbean, with accumulations in the last 6 hours between 5 - 35 mm.
Forecast: For the rest of the morning and towards noon, the pattern of increasing scattered cloudiness will occur in the Caribbean regions and parts of the Northern Zone. Occasional showers and downpours are expected, with accumulations between 20 - 40 mm with punctual maximums of 70 mm (especially towards the mountains of the west and in the early hours of the afternoon).
In the afternoon, punctual events of heavy precipitation are expected, which are anticipated in the South Pacific, coasts of the Central Pacific. The estimated amounts would be between 30 - 50 mm with maximums of 70 - 100 mm in a very localized manner, this in periods of 12-24 hours. The Central Valley will have scattered showers with possible thunderstorms in the mid-afternoon and rains towards the end of the afternoon and early evening, with amounts between 15 - 40 mm with maximums of up to 65 mm.
In the case of the North Pacific, it would be the Nicoya Peninsula that will present isolated showers with thunderstorms, where the estimated accumulations would be 20 - 40 mm and maximums of 60 mm in periods of 24 hours. The mountains of the Northern Zone will have these same characteristics in the rains and on the mountains, with accumulations similar to the North Pacific.
The rains can extend to the early hours of the night in certain parts of the country and especially towards the Pacific coasts.
Warning: The maritime areas surrounding the Pacific continue to experience strong storms at different periods (night, dawn and morning), with the possibility of adverse conditions. High soil saturation remains in the Northern Zone and the Osa Peninsula, increasing vulnerability in these areas.
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
Jose Valverde Mora
Meteorologist
DMSA-IMN
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