Resumen

ARMAS-FORTEZA, Osniel; VARELA-DE LA ROSA, Alis  y  JUSTIZ-AGUILA, Ailyn. Locally Heavy rain. Study cases. Rev. Cubana Met. [online]. 2020, vol.26, n.2  Epub 01-Jun-2020. ISSN 2664-0880.

Heavy rain is a severe phenomenon that causes major damage to different sectors of the economy and compromising the safety of the population. However, there is poor understanding of the mechanisms and factors which favor its meso-scale occurrence. In this research a case study presenting conditions anticyclonic influence throughout the tropospheric column, in order to determine the mesoscale behavior of temperature, relative humidity and wind, as well as the internal structure of storms which favor the occurrence of locally heavy rain in six hours in the less rainy period for the half eastern part of Cuba. It featured the output of the numerical model WRF (Weather Research and Forecasting) for the analysis of field temperature, wind and humidity. Radar observations and satellite images complement the data available for the study of evolution and internal structure of storms. According to the WRF model output, heavy rain studied cases were generated in an environment of weak vertical wind shear from surface up to 6 km. High relative humidity at the surface-850 hPa layer, a dry layer at middle levels and temperatures below -6 ° C at 500 hPa were predominant. Convective cells are characterized by intense and rapidly evolving. While variables vorticity, divergence and vertical velocity does not reflect a homogeneous behavior for locally heavy rain processes.

Palabras clave : Heavy rain; meso-scale and WRF model.

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