Abstract: In order to understand the characteristics of marine meteorological disasters in the Bohai sea,improving the ability of marine meteorological disaster monitoring and forecasting,MICAPS,satellite images,sounding data,national basic meteorological observation station data and buoy station data were used to analyze the weather cases of 78 shipwreck accidents caused by gale,fog,severe convection during 2001 to 2015 in the Bohai sea.The results show that the main gale in the Bohai sea is the north gale in winter and spring and the south gale is rare.The cold air is delivered from northern,northwestern and western paths.The surface air pressure field of southern wind can be grouped into two patterns,that is,the northeastern low pressure and the North China topographic trough.Heavy fog in the Bohai sea usually occurs in autumn and winter.The advection fog affecting the Bohai sea and its coastal regions comes from the eastern,southeastern and southwestern paths.Strong convective weather in the Bohai sea usually occurs during May to September,which is influenced mainly by Mongolia vortex (trough) and Northeast vortex (trough).

Key words: Gale, Heavy fog, Severe convection, Weather classification, Monitoring and forecasting