Original scientific paper

Hailstorm on 04 July 2003 - a case study

Nataša Strelec Mahović orcid.org/0000-0002-0850-8250 ; Meteorological and Hydrological Service, Grič 3, 10 000 Zagreb, Croatia
Dunja Drvar ; Meteorological and Hydrological Service, Grič 3, 10 000 Zagreb, Croatia

Abstract

A case of severe convective storm is shown. The region of interest was under strong upper-level southwesterly flow on the leading side of the through, making the large-scale circumstances favourable for convective development. The sequence of satellite images shows the beginning of the strongest development over an island, near the coastline i. e. the orographic lifting was responsible 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.

Keywords

severe storm; orographic triggering; meso-scale forecast; nowcast

Hrčak ID:

64617

URI

https://hrcak.srce.hr/64617

Publication date:

15.12.2005.

Visits: 890 *