Weather warnings
May
08
Meteorological Warning Update
(Update) Showers and thunderstorms during the afternoon and early morningmeras horas de la noche
May 8, 2025
6:00 pm
Forecast: Rainy conditions have been observed this afternoon on the Pacific coast, much of the Central Valley, and mountainous areas of the Caribbean and the Northern Zone, due to the activity of...
May
08
Weather Warning
Showers and thunderstorms during the afternoon and early evening
May 08, 2025
10.30 a.m.
Discussion: The Intertropical Convergence Zone remains located over Costa Rica, generating significant moisture and instability. This, along with morning warming and the arrival of sea breezes,...
May
07
Aviso Meteorológico Actualización
(Actualización) Lluvias y aguaceros fuertes en el Valle Central y la vertiente del Pacífico
7 de mayo de 2025
6:20 pm
Diagnóstico: La Zona de Convergencia Intertropical sobre el país, en conjunto con factores locales como el calentamiento diurno y el ingreso de humedad desde el Océano Pacífico, favorecerá...
May
07
Weather Warning
Heavy rain and downpours in the Central Valley and the Pacific slope
May 7, 2025
09:35 a.m.
Diagnosis: The Intertropical Convergence Zone (ITCZ), combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, will favor variable rainfall throughout...
May
06
Weather Warning (Update)
Heavy showers this afternoon and early evening in the country
May 6, 2025
6:20 p.m.
Diagnosis: The proximity of the Intertropical Convergence Zone, combined with local factors such as daytime warming and the entry of moisture from the Pacific Ocean, has favored heavy downpours...
Weather warnings history
In this section you will find the weather warnings history.
Aviso Meteorológico-IMN-030225-10.30 a.m.
Feb
03
Aviso Meteorológico
Condiciones ventosas persisten este inicio de semana
3 de febrero de 2025
10.30 a.m.
Diagnosis: High levels of atmospheric pressure north of the Caribbean Sea basin favor windy conditions in the national territory. This Monday, maximum gusts between 60 km/h and 87 km/h were recorded in northern Guanacaste. In the Central Valley and the plains of the North Pacific, between 40 km/h and 73 km/h. Mostly stable conditions are present in the national territory, with no significant rain in the last 12 hours.
Forecast: Atmospheric pressure will remain high this Monday and Tuesday, which favors the occurrence of strong to very strong gusts towards the mountains, in the center and in the north of the national territory. In low areas of the Central Valley and North Pacific, gusts between 30 km/h and 60 km/h are expected, while in northern Guanacaste and the mountains, gusts between 60 km/h and 100 km/h are expected (without ruling out occasional slightly higher gusts in these areas).
On the other hand, this Monday the conditions are mostly stable in the country. However, it is possible that the incursion of cloudiness towards the south of the South Pacific in the afternoon will generate scattered showers with thunderstorms, with accumulations close to 50 mm in periods of 3 to 6 hours.
Warning: Special attention in mountains and in surrounding low areas, due to the presence of strong to very strong gusts.
Due to the above, the IMN recommends:
• Prevention due to gusts of wind and their possible affectation of 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 fires of all kinds, since they can get out of control. • Caution due to sewer saturation in places prone to this type of flooding, as well as increased flow in rivers and streams.
• Stay informed through social networks: Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the website www.imn.ac.cr
Gabriela Chinchilla R. Meteorologist DMSA/IMN
