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Aviso Meteorológico-IMN-110921-1045am



Weather Warning

Rainy pattern this weekend

September 11, 2021
10.45 a.m.

Discussion: The Intertropical Convergence Zone continues to be very active over Costa Rica and its surroundings this weekend, generating instability and ingress of humidity from maritime sectors to the national territory. During this morning, rainfall has been registered in the Caribbean and the North Zone with accumulated between 5-20 mm.

Forecast: In the remainder of the morning, scattered rains and possible storms will continue in the North Zone and Limón province, with accumulated between 5-25 mm.

During the afternoon, heavy rains and downpours with a thunderstorm are expected, the most intense rainfall will manifest itself in the Pacific regions and in the North Zone with amounts 30 - 70 mm and possible accumulated higher in a focused manner. In the Central Valley and mountainous sectors of the Caribbean, rainfall amounts between 15-40 mm are estimated.

In the evening hours, moderate to strong downpours will prevail, particularly in the Pacific coastal areas and surrounding areas, with amounts between 30-60 mm. In addition, weak rains and fog banks are possible in the Central Valley and in the mountainous axis, precipitation ranges between 5-20 mm.

Warning: The rains of the last days cause high levels of soil saturation in the North Pacific and South Pacific regions; as well as on the coasts of the Central Pacific and the North Zone, where the rapid increase in river flow could occur. Caution in areas with high vulnerability to landslides such as the cantons of Desamparados, Aserrí, Ruta 32 and the vicinity of the Cordillera de Guanacaste.

Due to the above, the IMN recommends:

  • Caution for sewer saturation and possible flash floods in the North Zone, as well as in the Pacific, Central Valley.
  • Prevention against thunderstorms and seek shelter in a safe place in the event of strong gusts of wind occurring or perceived near the storm clouds, due to the possible fall of tree branches, power lines, among others.
  • Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEB Page: www.imn.ac.cr

Rebeca Morera R