THE HEAVY SNOWFALL IN THE LVIV REGION

The relevance of determining the type of circulation and thermodynamic conditions of heavy snowfall in the Lviv region is due to the significant complication of meteorological conditions for aircraft flight due to heavy snowfall. Revealed the significant annual snowfall in the Lviv region from 2011 to 2021 at each station of the region with an increase in the number of cases towards the Carpathian Mountains. Established that heavy snowfall was observed at the stations of the Lviv region once every 3-5 years, with an increase in the number of cases after 2016, and the maximum of the annual flow occurred in February and December. Determined that heavy snowfalls were mainly formed under the influence of the occluded front during the movement or formation of the cyclone center over the northwest of Ukraine within the cold high-altitude baric basin at the level of 500 hPa during the north-west transport of air masses at altitudes from 750 to 3000 m.