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...
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...
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...
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...
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...
Weather warnings history
In this section you will find the weather warnings history.
Weather Warning
Aug
02
Showers with thunderstorms in the North Pacific
August 2, 2024
08:00 p.m.
Diagnosis: The entry of humidity from maritime sectors, together with the positioning of the Intertropical Convergence Zone close to the country, have favored during the afternoon and what we have of the night period of this Friday showers with thunderstorms in the North Pacific and sectors west of the Central Valley. The main accumulations of the last 6 hours are the following: Dulce Nombre in Nicoya with 76.8 mm, Cañas in Guanacaste with 66.6 mm, Santa Rita in Nandayure with 63.8 mm, Montaña Sagrada (Aguas Zarcas Landslide) with 42.4 mm, Tenorio Volcano with 38.4 mm, Balsa in San Ramón with 33.4 mm, Naranjo with 100.2 mm, Las Esferas in Osa with 21 mm, Montecarlo in Pérez Zeledón with 16.4 mm and Arunachala, Rio Nuevo in Pérez Zeledón with 16.2 mm.
Forecast: During the next 1-3 hours, showers with thunderstorms will continue in the North and Central Pacific, as well as some sectors west of the North Zone, with estimated amounts of 20-50 mm. This rainy activity would tend to decrease during the second half of the night period. During the early morning period, occasional rains could occur in the Caribbean and the Northern Zone, with estimated amounts of 10-20 mm.
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 extensive disturbance may cause an ideal environment for precipitation in the national territory; during the morning in the Caribbean and the Northern Zone, in the afternoon in regions of the Pacific and Central Valley.
Warning: High soil saturation remains in the Northern Zone, the Caribbean, South Pacific and the Nicoya Peninsula, increasing vulnerability in these sectors. In addition, in urban areas, sewer saturation could cause flash floods.
Due to the above, the IMN recommends:
- Caution due to sewer saturation in places prone to this type of flooding.
- Prevention against 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.
Andrés Gamboa
Meteorologist
DMSA-IMN