Weather warnings
Jul
08
Informative Weather Notice
Sahara dust over the country
July 08th, 2025
9:50 a.m.
Diagnosis: Increases in atmospheric pressure in the Caribbean Sea accelerate the trade winds over the basin, as well as over central and northern Spain. Furthermore, a dry, stable air mass...
Jul
07
Weather Warning
Heavy downpours during the afternoon in the Pacific and northern regions
July 07th, 2025
10.40 a.m.
Discussion: Tropical Wave 13 is located in western Costa Rica, close to entering the Pacific Ocean. Although it is a weak wave, its interaction with the Intertropical Convergence Zone increases...
Jul
06
Aviso Meteorológico
Efectos de la onda tropical #13 en el país este domingo y lunes
06 de julio de 2025
11.25 am
Diagnóstico: La onda tropical #13 se localiza este domingo al oeste de Panamá, generando inestabilidad en el mar Caribe frente a la costa costarricense, lo que favorece lluvias en el Caribe Sur...
Jul
01
Weather Warning
Rainy conditions in the Caribbean and Northern Zone this Tuesday and Tropical Wave #12
Jul 01th, 2025
10 am
Diagnosis The strengthening of the trade winds over the central and northern regions of the country has produced wind gusts of up to 50 km/h in areas such as Alajuela this morning. This...
Jun
28
Weather Warning
Tropical Wave #10 over Costa Rica
June 28th, 2025
10:30 a.m.
Diagnosis: Tropical wave #10 is over the country this Saturday, causing instability in maritime areas of the Caribbean and northern parts of the Northern Zone. There has been increasing...
Weather warnings history
In this section you will find the weather warnings history.
Weather Warning-IMN-071024-5:20 p.m.
Oct
07
Weather Warning (Update)
Downpours with a thunderstorms this afternoon
October 07, 2024
5:20 p.m.
Diagnosis: The position and activation of the Intertropical Convergence Zone has been causing rain and thunderstorms in the western Caribbean regions, in the center and east of the Northern Zone and in parts of the Central Valley and the Northern Pacific. So far, accumulations of between 50 - 80 mm have been recorded around Sarapiquí, 30 mm on Route 32, Turrialba and Talamanca, in addition to 50 mm on the Orosi Volcano and between 10 - 30 mm for the Pacific regions.
Forecast: The rest of the afternoon will continue to see scattered showers with thunderstorms in the Northern Zone and mountains of the Caribbean, with accumulations between 30 - 60 mm with punctual maximums between 60 - 80 mm. Similar amounts are anticipated for the mountains and nearby surrounding areas of the Northern Pacific. For the east of the Central Valley, Central and South Pacific, scattered rains and showers are estimated with accumulations between 10 - 30 mm and maximums of around 65 mm. The probability of variable rains is estimated in the early hours of this Tuesday, for the Pacific coasts and peninsular sectors.
Warning: Soil saturation conditions continue in the North Zone and Guanacaste. Also in the entire central mountainous part of the country. Saturated soils are also recorded in both peninsulas in the Pacific. This situation indicates a risk of incidents due to sewer saturation, river flooding or landslides in areas where the occurrence of rain is estimated during this day.
Due to the above, the IMN recommends:
• Caution due to sewer saturation in places prone to this type of flooding.
• Prevention against thunderstorms and seek shelter in a safe place if 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 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
Jose Valverde Mora
Meteorologist
DMSA-IMN
