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Meteorological Warning-IMN-120920-Heavy rains in the Pacific this Saturday



Weather Warning

Heavy rains in the Pacific this Saturday

September 12, 2020
10:30 a.m.

Diagnosis: Unstable atmospheric conditions are present over the country. The proximity of the Intertropical Convergence Zone, as well as the entry of humidity from maritime sectors and little cloudiness over the national territory from early hours are the main factors for the generation of rainfall and electrical storm this day.

Forecast: For this afternoon and early evening, the possibility of stormy showers remains high for the entire Pacific slope, but with a higher probability for the surroundings of the Nicoya and Osa peninsulas, as well as mountainous sectors of the Central and South Pacific. . The amounts are estimated between 20-80 mm with possible higher amounts locally.

During this same period, isolated rainy activity of variable intensity is anticipated for the Central Valley with estimated amounts between 10-50 mm with possible fog banks at the end of the evening period. For the Caribbean and Northern Zone regions, isolated moderate-intensity rains are expected near the mountainous parts. The amounts are estimated between 10-40 mm with possible higher maximums in a specific manner.

Warning: High levels of soil saturation prevail in the North Zone, northwest of the Central Valley, the Nicoya Peninsula and the South Pacific; therefore, particular attention is recommended.

Due to the above, the IMN recommends:


  •     Caution in areas vulnerable to flooding due to sewer saturation.
  •     Take shelter in a safe place in case of hearing an electrical storm or perceive strong gusts of wind near the storm clouds, as well as caution against possible falling tree branches, power lines, among others.
  •     Stay informed through social networks, Twitter: @IMNCR, Facebook: Instituto Meteorológico Nacional CR and the WEB Page:

Daniel Chacon Fernandez