Weather warnings
Aviso Meteorológico-IMN-120724-Viento alisio acelerado y lluvias en el país este viernes
Jul
12
Meteorological Warning
Accelerated trade winds and rains in the country this Friday
July 12, 2024
10:20 am
Diagnosis: Unstable atmospheric conditions persist in southern Central America, due to the position of the Intertropical Convergence Zone and the drag of humidity from the Caribbean by the trade winds. This morning there has been variable cloudiness with scattered rain in the Caribbean and the Northern Zone, as well as in coastal areas of the South Pacific. The maximum amounts of precipitation recorded so far are between 5-20 mm.
Forecast: Variable weather conditions are projected for this Friday over the national territory. The trade wind will remain strong with occasional gusts in the Central Valley (35-45 km/h), Guanacaste (35-55 km/h) and in the mountain ranges of the country (60-70 km/h)
In the Caribbean and the Northern Zone, partly cloudy skies are expected in the morning with some intermittent rains of weak to moderate intensity. For the second half of the afternoon and the night period, an increase in cloud cover is expected, as well as an intensification of rains. Isolated heavy showers are expected, especially in mountainous areas and surrounding areas (places such as San Carlos, Sarapiquí, Pococí, Aguas Zarcas, Turrialba, among others) for this period. Maximum amounts between 40-70 mm with the possibility of values greater than 90 mm localized.For the Central Valley, the entry of cloudiness from the Caribbean maintains the probability of occasional rains in the north, central and east sectors, while in the west and south isolated showers are expected with the possibility of short-term storms. Maximum amounts estimated between 5-30 mm.
For the Central and South Pacific, there is a probability of scattered showers with thunderstorms mainly in the mountainous areas and surrounding areas, as well as in the vicinity of the border area with Panama (places such as Pérez Zeledón, Buenos Aires, San Marcos, San Vito, Laurel, among others). For the North Pacific, scattered rains are expected in the center and south of the Nicoya Peninsula and in the surrounding areas of the Guanacaste and Tilarán mountain ranges. Maximum amounts estimated between 25-50 mmWarning: Special attention should be paid to the Caribbean and Northern regions because the rains of the last few hours keep the soils with high levels of saturation and this increases the vulnerability of the area.
Due to the above, the IMN recommends: Caution due to sewer saturation in places prone to this type of flooding.
Prevention in the event of an electrical storm and seeking shelter in a safe place in the event of strong gusts of wind occurring or perceived near the 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
Meteorologist
DMSA-IMNWeather warnings history
In this section you will find the weather warnings history.
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...
Dec
31
Weather Warning
Rains of variable intensity during this afternoon and early evening
December 31, 2024
11.30 a.m.
Discussion: The Intertropical Convergence Zone remains close to the country, along with instability in the upper atmosphere, these are factors that increase the high probability of rain and...
Dec
30
Weather Warning (Update)
Isolated showers in some areas of the country in the late afternoon.
December 30, 2024
4 p.m.
Diagnosis: The position of the Intertropical Convergence Zone over the country together with atmospheric instability have generated variable rainfall in the country since the morning. Up to this...
Dec
30
Aviso Meteorológico
Aguaceros fuertes aislados este lunes para algunas zonas del país
30 de diciembre de 2024
9:00 am
Diagnóstico: La posición de la Zona de Convergencia Intertropical sobre el país aunado a inestabilidad en la atmósfera alta generan condiciones favorables para la presencia de lluvias variables...
Dec
29
Weather Warning
Heavy showers this afternoon and early evening
December 29, 2024
11:20 a.m.
Diagnosis: The increase in humidity over southern Central America, favored by very weak trade winds and an anomalous position of the Intertropical Convergence Zone over the country, has generated...
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...