Weather Warning

Heavy rains and thunderstorms during this afternoon and early evening

September 07, 2024

10.35 a.m.

Discussion: The Intertropical Convergence Zone maintains its activity close to the national territory, which has favored a very humid and unstable atmospheric pattern, generating cloudiness especially near the coasts and occasional rains this morning in sectors of the Osa Peninsula, Tortuguero, Santa Elena Peninsula, south of the Nicoya Peninsula, Upala, among others; with accumulations between 5-34 mm in the last 3 hours.

Forecast: Strong rain and thunderstorms are expected this afternoon and early evening. The regions most likely to experience these conditions are the Central Valley, the Northern Zone and the Pacific. Rain will begin in the mountainous areas and gradually spread to the lower areas. In the Caribbean, rain is not ruled out; however, it will be limited to the mountainous areas. Amounts between 30-70 mm are expected in 6-12 hour periods, with higher localized accumulations possible.

Warning: Saturation of elevated soils will continue in the North Zone, the Southern Pacific and the Nicoya Peninsula, where rain will be recurrent, so these areas are highly vulnerable. Likewise, the rains expected in urban areas may cause congestion in the sewer system and flash floods.

Due to the above, the IMN recommends:

• Be careful 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

Rebeca Morera R
Meteorologist
DMSA-IMN

 

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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

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