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

In this section you will find the weather warnings history.

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Aviso Meteorológico-IMN-090924-Aguaceros fuertes en el Pacífico este lunes

Sep

09

Meteorological Warning

Heavy rains in the Pacific this Monday

September 9, 2024
10:00 am

Diagnosis: Unstable conditions continue in the atmosphere around the country, due to the proximity of the Intertropical Convergence Zone and the high humidity content. This condition, together with local factors, will favor variable rain activity for this afternoon.

Forecast: For this afternoon and early evening, showers with strong thunderstorms are expected for the Pacific slope, particularly for the mountainous areas in the Central Pacific, around the border with Panama, around the Golfo Dulce in the South Pacific and around the Gulf of Nicoya, Tempisque Valley and mountain ranges in the North Pacific. Estimated amounts between 40-80 mm with possible higher amounts at certain times.

For the Central Valley, scattered showers with thunderstorms are expected mainly in the west and north, in the rest of the region, isolated showers are possible mainly in the highlands and their surroundings. Maximum amounts estimated between 20-60 mm.

In the Northern Zone, isolated heavy showers with thunderstorms are expected, starting in the mountainous areas in the early afternoon and then moving towards the lower areas in the late afternoon and early evening. Estimated amounts are between 30-70 mm with possible higher amounts at certain times.

In the Caribbean regions, showers with thunderstorms are expected in mountainous areas and surrounding areas (10-30 mm), while the coastal areas will continue to be predominantly cloudy with the possibility of occasional rains of lesser intensity (1-10 mm), especially towards the nighttime period.

Warning: Saturated soil conditions continue in the Central Valley, Pacific slope and mountainous areas of the Caribbean and the Northern Zone, due to heavy rains over the weekend. This situation indicates a significant risk of incidents due to sewer saturation, river flooding or landslides, so special caution is recommended.

Due to the above, the IMN recommends:

• Caution 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
Roberto Vindas
Meteorologist
DMSA-IMN