Weather warnings

Jan

09

Weather Warning

Rainy conditions will continue overnight in the North Zone

January 9, 2025
06.25 p.m.

Discussion: Accelerated winds prevail in the country, favoring the constant drag of humidity from the Caribbean Sea towards the national territory. The strongest gusts have been recorded in...

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Jan

09

Weather Warning

Cold surge #8 leaves the Caribbean Sea, but rains will continue in the Northern Zone

January 9, 2025
10:00 a.m.

Diagnosis: This Thursday the cold push #8 is in the Atlantic moving away from the Caribbean Sea so it no longer has influence in Costa Rica. However, a high pressure system in the United States...

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Jan

08

Weather Warning (Update)

Cold surge #8 maintains influence this Wednesday

January 8, 2025
5:10 p.m.

Diagnosis: This Wednesday, the effects of cold pressure #8 (EF#8) continue over the country, the cutting line associated with this system has reached Costa Rica. This favors occasional gusts in...

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Jan

08

Weather Warning

Cold surge #8 maintains influence this Wednesday

January 8, 2025
09.25 a.m.

Discussion: On this Wednesday, the effects of cold surge #8 (EF#8) continue over the country, the cutting line associated with this system has reached Costa Rica. This favors windy conditions in...

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Jan

07

Weather Warning

Influence of Cold Surge #8

January 7, 2025
10:00 a.m.

Diagnosis: Cold Surge #8 (EF#8, for its acronym in Spanish) entered the Caribbean Sea on Tuesday, its associated shear line is positioned close to the Nicaraguan Caribbean coast. The presence of...

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Weather warnings history

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Aviso Meteorológico-IMN-020824-1140am

Aug

02

Weather Warning

Heavy showers and thunderstorms this afternoon in the Pacific

August 2nd, 2024
11.40 a.m.

Discussion: The entry of humidity from maritime sectors, added to warm morning temperatures, will favor cloud development this afternoon, generating rainy and electrical activity between moderate and strong intensity and may extend into the early hours of the night.

Forecast: During this afternoon and early evening, heavy rain and downpours with thunderstorms are expected in the Pacific regions, with amounts estimated between 30 mm and 70 mm in periods of 6-12 hours, with possible higher accumulations in a localized manner.

Meanwhile, in the Central Valley, mountainous parts of the Caribbean and the Northern Zone, scattered rains are expected, with accumulations between 10-40 mm in periods of 6-12 hours. Occasional rains are possible in the Caribbean and Northern Zone during the course of the night period.

This Saturday, the passage of tropical wave #22 is expected, although the cloudiness and instability associated with this system moves over the Greater Antilles, the effects of this broad disturbance can lead to an ideal environment for precipitation in the national territory; during the morning in the Caribbean and the North Zone, in the afternoon in regions of the Pacific and Central Valley.

Warning: High soil saturation levels remain in the North Zone, the Caribbean, the South Pacific and the Nicoya Peninsula, increasing vulnerability in these areas. In addition, in urban areas, sewage saturation could lead to flash flooding.

Due to the above, the IMN recommends:

  • Be careful 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

Rebeca Morera R
Meteorologist
DMSA-IMN