华安县冰雹天气过程分析

Analysis of HailWeather Process in Hua'an County

该冰雹过程受高空槽东移、低层切变南侧西南气流、地面倒槽共同影响,探空图上8时处在不稳定状态,午后最高温度达到28℃以上时,注意对流天气。春季比湿达到10 g/kg以上需引起关注,3月K指数达到37℃,SI为负值,0℃层在4 km左右时,或组合反射率因子强度达到65 dBZ以上,并持续4个体扫,预报服务应考虑冰雹天气影响。

The hail process is affected by the eastward movement of the upper-altitude trough,the southwestern airflow on the south side of the low-level shear,and the inverted trough on the ground.The sounding chart is in an unstable state at 08:00.When the highest temperature reaches 28℃ in the afternoon,pay attention to convective weather.The specific humidity in spring should be more than 10 g/kg.In March,the K index will reach 37℃,the SI will be negative,and the 0℃ layer will be around 4km,or the combined reflectance factor will reach 65 dBZ or above,and 4 individual sweeps will continue.The service should consider the impact of hail weather.