Weather warnings
Jul
15
Informative Weather Advisory
Saharan Dust and Strong Wind Gusts Affecting Several Regions
July 15, 2025
9:00 am
A dry air mass accompanied by Saharan dust is positioned over the Caribbean Sea and Central America. Additionally, a marked atmospheric pressure gradient is accelerating the trade winds...
Jul
14
Aviso Meteorológico
Onda tropical #15 transitando este lunes por el país
14 de julio de 2025
10:00 AM
Diagnóstico: La onda tropical #15 ingresó al país durante la madrugada. Aunque es una onda débil, ha generado lluvias y tormentas en zonas marítimas del Pacífico Central, el Caribe y en áreas...
Jul
13
Aviso Meteorológico Informativo
Tropical Wave #15 transiting over Costa Rica early Monday morning
July 13h, 2025
6 p.m.
Diagnosis: During the course of early Monday morning, tropical wave #15 will be passing over the national territory. Although it is a weak tropical wave, it will be interacting with the...
Jul
11
Weather Warning
Tropical wave #14 over Costa Rica this Friday
July 11th, 2025
9:50 a.m.
Diagnosis: The high humidity level across the country and the current instability are a result of Tropical Wave 14, which is positioned over the country this morning. Scattered showers have...
Jul
10
Weather Warning
Tropical Wave 14 to Pass Over Costa Rica This Friday
July 10, 2025
04.30 p.m.
Discussion: A change in the weather pattern toward more humid and unstable atmospheric conditions over Costa Rica and surrounding areas will increase the occurrence of rainfall in various parts...
Weather warnings history
In this section you will find the weather warnings history.
Afternoon showers in several areas of the country this Sundayas zonas del país este domingo
Sep
17
Meteorological Warning
Afternoon showers in several areas of the country this Sunday
September 17, 2023
11:00 am
Diagnosis: Local factors combined with the positioning of the Intertropical Convergence Zone over the country generate unstable atmospheric conditions. During the morning, scattered rains have been recorded in coastal sectors of the South Caribbean, Central and South Pacific, as well as in the south of the Nicoya Peninsula and in the border area with Nicaragua. Amounts recorded between 5-15 mm with a maximum located of 57 mm in Jiménez de Osa.
Forecast: For this afternoon and early evening, scattered showers with localized storms are expected for the Central and South Pacific, as well as the Nicoya Peninsula and mountainous areas of the North Pacific. Estimated amounts between 30-70 mm with possible localized higher amounts.
For the Central Valley, isolated showers are expected with the probability of an intense electrical storm to the west and north of the region. In addition, scattered showers are expected in sectors in the center, south and east of the region, with a possible storm in mountainous areas. Maximum amounts estimated between 15-50 mm with the possibility of localized higher values.
For the Caribbean and the North Zone, isolated downpours are expected with a strong storm located in the border area and mountainous sectors. Estimated amounts between 25-55 mm and possible specific accumulations between 60-80 mm. For coastal areas, scattered rains are expected with estimated amounts between 5-25 mm.
Warning: Special attention in the Sarapiquí sector and around Braulio Carrillo in the Northern Caribbean and Northern Zone, as well as in the border area with Panama and around the Talamanca mountain range because these areas have high levels of soil saturation which increases the risk of incidents.
Due to the above, the IMN recommends:
Caution due to sewage saturation in places prone to this type of flooding.
Prevention against electrical storms and seeking shelter in a safe place in case strong gusts of wind occur or are perceived near storm clouds, due to the possible fall of tree branches, power lines, among others. These gusts can reach between 80 to 100km/h in some isolated cases.
Stay informed through social networks, Twitter: @IMNCR, Facebook: National Meteorological Institute CR and the WEB Page: www.imn.ac.cr
Roberto Vindas
DMSA-IMN
