Weather warnings

Jul

19

Weather Warning (Update)

Tropical wave #20 moves over Costa Rica

July 19, 2024
3:30 p.m.

Diagnosis: The arrival of tropical wave #20 has generated unstable atmospheric conditions over Costa Rica, favoring partial to total cloudiness this afternoon, as well as thunderstorms and...

See More


Jul

19

Weather Warning

Tropical wave #20 moves over Costa Rica

July 19, 2024
10.20 a.m.

Discussion: The entry of tropical wave #20 has generated unstable atmospheric conditions over Costa Rica, favoring partial to total cloudiness this morning and early morning, as well as rain in...

See More


Jul

19

Aviso Meteorológico

Lluvias de variable intensidad en el país por el paso de la Onda Tropical #20

19 de julio de 2024
03:30 am

Diagnóstico: El paso de la onda tropical #20 junto con la Zona de Convergencia Intertropical favorecen la inestabilidad atmosférica y las precipitaciones durante la madrugada en el país. En...

See More


Jul

18

Meteorological Warning

Rains of variable intensity during this Thursday and Tropical Wave #20 for this Friday

July 18, 2024
5:00 pm

Diagnosis: The Intertropical Convergence Zone positioned over Costa Rica, in conjunction with local factors and a high content of precipitable water in the atmosphere, has favored showers with...

See More


Jul

18

Weather Warning

Rains of varying intensity during this Thursday

July 18, 2024
10:10 a.m.

Diagnosis: The Intertropical Convergence Zone is positioned over Costa Rica. This system, together with local factors and a high content of precipitable water in the atmosphere, will favor the...

See More


Weather warnings history

In this section you will find the weather warnings history.

« Back

Aviso Meteorológico-IMN-110624-0930am

Jun

11

Weather Warning

Variable rains this Tuesday and tropical wave n°8 moving in next Wednesday

June 11, 2024
9:30 a.m.

Diagnosis: Atmospheric instability and high humidity persist in the region. The Intertropical Convergence Zone remains active and close to the national territory. During the morning, there were rains in coastal areas of the North Pacific and South Pacific; these were not significant, amounts below 20 mm.

Forecast: Current atmospheric conditions anticipate rains of varying intensity during the afternoon and part of the night.

For the North Pacific, North Zone and mountains of the Caribbean, showers with thunderstorms are expected, starting in the surroundings of the mountain ranges during the early afternoon and later towards the plains of the North Zone, surroundings of the Tempisque Valley, northern Guanacaste and the Gulf of Nicoya. During the night period, these may occur towards coastal areas. Maximum amounts between 50 mm and 100 mm are estimated; higher amounts may occur locally.

In the Central and South Pacific, showers with the possibility of thunderstorms are expected, which would start in the mountains and continue to spread towards coastal areas and nearby plains. There is a probability of strong events in a localized manner. Amounts between 30 mm and 70 mm are expected, with higher localized amounts.

There is a moderate-high probability of rain in most of the Central Valley; however, the greatest possibility of strong showers and storms is observed for the mountainous areas and their surroundings. Amounts between 30-50 mm are expected with possible higher localized amounts.

The entry and movement of easterly wave n°8 over the country is anticipated during next Wednesday.

Warning: The rains projected for urban areas may again be precursors to flooding and sewer saturation in already recurring areas. Saturated soils are monitored in the mountains of the South Pacific, Valle del General, the mountains of the North Caribbean and the North Zone, as well as the center and north of Guanacaste.

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

Paulo Solano
Meteorologist
DMSA-IMN