Informative Meteorological Warning

Increase in rain in the Caribbean and Northern Zone for this Tuesday and windy conditions in the center and north of the country

December 11, 2023

5:30 pm

Diagnosis: The transit of Cold Thrust #7 since this Monday through northern Central America is favoring a new increase in atmospheric pressure in the region. This is causing a gradual acceleration of the trade wind. The above, combined with a higher humidity content, will generate an increase in cloudiness and rain in the Caribbean and Northern Zone starting this Tuesday. On the other hand, during the morning and afternoon of this Monday, scattered rains with isolated downpours have occurred in the Caribbean and Northern Zone, the most significant amounts at this time are between 30-40 mm in Los Chiles and Upala and 60 mm in the Braulio Carrillo area.

Forecast: For the remainder of this afternoon and early evening, isolated showers will persist in mountainous areas of the Northern Caribbean and Northern Zone with estimated amounts between 10-30 mm.

In addition, current analyzes and numerical modeling show a significant probability of variable cloudiness with isolated rains for the Caribbean and the Northern Zone, this mainly for the early morning and part of the morning of Tuesday. The maximum accumulations are estimated between 20-60 mm in periods of 6 hours. The Central Valley and northern Guanacaste will have partly to mostly cloudy skies with possible drizzle in the mountains, while in the rest of the country little cloudiness is expected during the same period. It is also projected that the intensity of the wind will increase in the center and north of the country as the day progresses and atmospheric pressure continues to increase over the Caribbean Sea basin. Estimated maximum gusts will be between 40 - 60 km/h in the Central Valley and lower parts of Guanacaste and localized values of up to 90 km/h are possible in northern Guanacaste and the mountain ranges.

Warning: Special attention due to strong wind gusts in the mountainous sectors and north of the North Pacific.

Due to the above, the IMN recommends:

     Prevention of wind gusts and their possible impact on roofs, electrical wiring, signs, trees; as well as in the mountainous parts of the country and Guanacaste (national parks, volcanoes).
     Caution in air navigation due to increased turbulence, as well as in maritime navigation due to increased rough seas, especially in the North Pacific, Gulf of Nicoya and northern Central Pacific.
     Avoid burning of all types, as they can get out of control.
     Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute CR and the WEB Page: www.imn.ac.cr

Roberto Vindas

Meteorologist

DMSA-IMN

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