Weather warnings
Apr
21
Weather Warning
Trade winds and increased moisture content to the south of the region
April 21, 2025
09:40 a.m.
Diagnosis: The increase in atmospheric pressure in the northern Caribbean Sea, maintains accelerated trade winds in the center of the basin, this coupled with high humidity values in the region,...
Apr
18
Aviso Meteorológico
Condiciones ventosas persisten este viernes
18 de abril de 2025
9:30 am
Diagnóstico: Un fuerte gradiente de presión atmosférica sobre el Mar Caribe mantiene el viento acelerado en la región centroamericana. En Costa Rica se han registrado ráfagas máximas de 96.7 km/h...
Apr
17
Weather Warning
Moderate to strong wind gusts this Thrusday
April 17, 2025
09:30 a.m.
Diagnosis: High atmospheric pressure levels north of the Caribbean Sea basin are favoring accelerated trade winds over the country. So far, the lower reaches of the Central Valley and the North...
Apr
16
Aviso Meteorológico
Ráfagas de viento de moderadas a muy fuertes este miércoles
16 de abril de 2025
10:30 am
Diagnóstico: Un nuevo incremento en la presión atmosférica sobre la cuenca del Mar Caribe está favoreciendo un fuerte aceleramiento del viento sobre el país. Los sectores bajos del Valle Central...
Apr
14
Aviso Meteorológico
Lluvias en el Caribe y Zona Norte este lunes
14 de abril de 2025
9:00 am
Diagnóstico: El empuje frío #19 comienza a alejarse de la región, sin embargo, aún se mantienen condiciones atmosféricas inestables en el Caribe y Zona Norte. Durante la madrugada y lo que va de...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-051124-1035am
Nov
05
Weather Warning
The indirect influence of tropical storm Rafael continues on Tuesday
November 05, 2024
10.35 a.m.
Discussion: This morning, tropical storm Rafael is located 105 km southwest of Montego Bay, Jamaica, maintaining sustained winds of 95 km/h and moving northwest at 20 km/h. The position of this system favors the constant incursion of humidity from the Pacific Ocean into the national territory. This has led to cloud cover and rain, especially in the Pacific regions and to a lesser extent towards the Central Valley, since early morning and part of the morning period. Accumulations in the last 6 hours ranged from 5 mm to 50 mm, the highest amounts have been recorded in the Nicoya Peninsula.
Forecast: For the rest of the morning, partial to total cloud cover will prevail in the country. Rain will continue to occur in the Pacific, especially in the Nicoya Peninsula and surrounding areas, with amounts between 5-30 mm. In the afternoon and evening, in Pacific regions, rain of varying intensity is expected, with accumulations between 40-90 mm in periods of 6-12 hours, with higher amounts possible in a localized manner.
For the Central Valley, occasional rains with intensities between weak and moderate are expected. These precipitations may begin around noon and extend during the evening and first part of the night, and fog banks are possible. The estimated amounts in periods of 6-12 hours are between 15-50 mm. On the other hand, in the North Zone and mountains of the Caribbean, rains and isolated showers with thunderstorms are expected in the afternoon and first part of the night. Accumulations estimated between 20-60 mm in periods of 6-12 hours.
According to the latest analyses, indirect effects in Costa Rica will gradually begin to decrease starting Wednesday.
Warning: Soil saturation with extremely high percentages remains in the Nicoya Peninsula, South Pacific, Northern Zone, high parts of the Central Pacific and Central Valley, so extreme measures are recommended since they are highly vulnerable to incidents.
Due to the above, the IMN recommends:
- Be careful due to sewer saturation in places prone to this type of flooding.
- Be prepared for thunderstorms and seek shelter in a safe place if strong gusts of wind occur or are perceived 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
