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.
Aviso Meteorológico-IMN-271224-11.00 a.m.
Dec
27
Weather Warning
Precipitation this afternoon and early evening
December 27, 2024
11.00 am
Diagnosis: The increase in humidity over southern Central America, favored by very weak trade winds, instability in the upper atmosphere and the abnormal proximity of the Intertropical Convergence Zone, generated rain during the early morning and early morning hours in the South Pacific, with cloudiness extending to the Central Pacific, Central Valley and the Caribbean.
Forecast: This situation will continue in the country over the weekend and Monday. Therefore, the incursion of cloudiness and showers from the Pacific Ocean into the national territory will prevail, especially in the Central and South Pacific. During the afternoon of this Friday, isolated rains and showers with strong thunderstorms are expected in the Central Pacific and South Pacific, which may reach coastal areas during the night period. This rain pattern may occur in isolation around the Gulf/peninsula of Nicoya, Central Valley and Northern Zone. Accumulations are estimated between 15 mm and 40 mm, with maximums between 50 mm and 80 mm at specific times.
Warning: Special attention should be paid to mountainous areas of the Northern Zone and South Pacific because the basins have saturation levels between 85% and 95%. Therefore, these are areas vulnerable to the occurrence of floods and landslides.
Due to the above, the IMN recommends: • Caution due to sewer saturation in places prone to this type of flooding. • Prevention during thunderstorms and seek shelter in a safe place in the event of strong gusts of wind occurring or 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 media: Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEBSITE: www.imn.ac.cr
Gabriela Chinchilla
Meteorologist
DMSA-IMN