Weather warnings

May

09

Weather Warning

Heavy rain on the Pacific slope

May 09, 2024
9:30 a.m.

Diagnosis: The atmospheric instability in our region is associated with the position of the Intertropical Convergence Zone, especially over Costa Rica. This favors the occurrence of heavy...

See More


May

08

Weather Warning

Rains of varying intensity for this Wednesday in the national territory

May 08, 2024
09:10 a.m.

Diagnosis: The strong atmospheric instability in the south of Central America is caused by the location of the Intertropical Convergence Zone, specifically over Costa Rica and Panama. During the...

See More


May

04

Weather Warning

Variable precipitations in the Central and South Pacific regions

May 04, 2024
10:20 a.m.

Diagnosis: The presence of weak trade winds, high temperatures and high humidity contents towards the south of Central America will be accompanied by instability due to the proximity of the...

See More


May

03

Aviso Meteorológico

Lluvias de variable intensidad en el Pacífico

03 de mayo del 2024
10:30 p.m.

Diagnóstico: Condiciones atmosféricas húmedas e inestables y la cercanía de la Zona de Convergencia Intertropical en el país, han favorecido durante esta noche la formación de núcleos convectivos...

See More


Apr

29

Weather Warning

Scattered showers with a thunderstorm for this Monday

April 29, 2024
10:30 am

Diagnosis: The proximity of the Intertropical Convergence Zone maintains instability and humid conditions favorable for precipitation in sectors of the Pacific slope and parts of the Central...

See More


Weather warnings history

In this section you will find the weather warnings history.

« Back

Aviso Meteorológico-IMN-070120-0245pm

Jan

07

Aviso Meteorológico

Windy conditions are intensified by the arrival of cold suge

January 07, 2020
02.45 p.m.

Discussion: Very high atmospheric pressure levels dominate the region, which has led to an increase in the pattern of winds during this day, with gusts reaching 80 km/h in the North Pacific and 60 km/h in the Central Valley In addition to this, the cold surge # 15 transits over the Gulf of Mexico, its incursion into northern Central America is expected in the next few hours, further accentuating the windy conditions on the country.

Forecast: It is estimated that during the night and during the early hours of this Wednesday the cold push is affecting the national territory. The main feature will be the projection of intense gusts of wind; Maximum speeds between 80-110 km/h are expected in Central Valley and North Pacific. Windy conditions will also be perceived in the mountains of the Central and South Pacific.

With respect to rainfall, rainfall of variable intensity is expected during the night of this day and early morning and Wednesday morning in the Caribbean and the North Zone, accumulated between 30-60 mm and possible higher amounts in a localized way. In addition, light rains and drizzles are possible in the north and east of the Central Valley and the north of Guanacaste, accumulated less than 5 mm.

The cold surge is projected to move rapidly to the Atlantic Ocean; therefore, the greatest impact will be during this Wednesday and part of Thursday; however, the weather conditions will continue extremely windy over the country at least until next Sunday due to the strengthening of a high-pressure system in the Atlantic.

Due to the above, the IMN recommends:

  • Extreme precautions due to strong winds and their possible impact on roofs, electrical wiring, signs, trees; as well as in the mountainous parts of the country (national parks, volcanoes).
  • Caution in areas vulnerable to flooding due to sewer saturation, increased flow in rivers and streams, and in areas prone to landslides.
  • Caution for boats by choppy sea and very strong waves in the North Pacific, Gulf of Nicoya, Central Pacific and the Caribbean Sea, as well as air navigation due to turbulence over the mountainous sectors.
  • Avoid burning of all kinds as they can get out of control.
  • Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute and the Website: www.imn.ac.cr


Rebeca Morera R
Meteorologist
DMSA-IMN