强对流天气蓝色预警：山西河北等地部分地区将有10级以上雷暴大风

Core Points - The Central Meteorological Observatory issued a blue alert for severe convective weather, predicting strong thunderstorms and hail in various regions from September 15 to September 16 [1][3] - Areas expected to experience wind speeds of 8 or above include southern Northeast China, northern North China, and eastern and southern Huanghuai, with some regions in northern Shanxi and northern Hebei potentially seeing winds exceeding level 10 [1] - Heavy rainfall is anticipated, with hourly precipitation exceeding 20 mm in several regions, and some areas like central Liaoning, southern Shandong, northern Anhui, northern Jiangsu, and central Sichuan may see hourly rainfall exceeding 50 mm, with maximums potentially reaching over 70 mm [1] Defense Guidelines - Government and relevant departments should prepare for short-term heavy rain, thunderstorms, and strong winds, with meteorological departments readying for artificial hail prevention [5] - Outdoor activities should be minimized, and individuals should stay away from temporary structures and billboards [5] - Livestock should be moved to covered areas, and doors and windows should be secured [5] - Water operations and passing vessels should take measures to return to port or navigate around affected areas, while construction sites should cover materials and secure outdoor items [5] - Drainage systems in cities, farmland, and fish ponds should be checked, and preparations for flood and landslide defenses should be made [5]