engleski

Hailstorm on 04 July 2003 - a case study

A case of severe convective storm is shown. The region of interest was under strong upper-level south-westerly flow on the leading side of the trough, making the large-scale circumstances favozurable for convective development. The sequence of satellite images shows the beginning of the strongest development over an island, near the coastline i. e. the ogographic lifting was respomsible for the initiation of strong convection. In Aladin model fields and cross-sections strong vertical wind shear, as well as higher humidity content was present above the island where the convection was triggered. The dynamic adaptation of the wind also depicts strong convergence in the region of interest. The most precise are the results obtained by nowcasting system based on satellite images. Atmospheric motion vectors and development fields show almost exact velocity and extent of the system.

Severe storm; Orographsevere storm; orographic triggering; meso-scale forecast; nowcastic triggering; Meso-scale forecast; Nowcast

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