Hailstorm Paths in the U.S.

Hailstorm Paths in the U.S. This feature layer, utilizing data from the National Oceanic and Atmospheric Administration (NOAA), displays hailstorm paths in the United States between 1955 and 2024. A hailstorm path shows the route of a hailstorm. Per NOAA, "Hail is a form of precipitation consisting of solid ice that forms inside thunderstorm updrafts. Hail can damage aircraft, homes and cars, and can be deadly to livestock and people. Hailstones are formed when raindrops are carried upward by thunderstorm updrafts into extremely cold areas of the atmosphere and freeze. Hailstones then grow by colliding with liquid water drops that freeze onto the hailstone’s surface. Hail falls when it becomes heavy enough to overcome the strength of the thunderstorm updraft and is pulled toward the earth by gravity." Super Hailstorm in Omaha, NE Data currency: December 30, 2024 Data source: Storm Prediction Center Data modifications: Added field Date_Calc For more information: Severe Weather 101 - Hail; NSSL Research: Hail Support documentation: SPC Tornado, Hail, and Wind Database Format Specification For feedback, please contact: [e-mail] Thumbnail source: Esri Basemaps National Oceanic and Atmospheric Administration Per NOAA, its mission is "To understand and predict changes in climate, weather, ocean, and coasts, to share that knowledge and information with others, and to conserve and manage coastal and marine ecosystems and resources."

美国冰雹路径数据集。本要素图层依托美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，NOAA）的公开数据，展示了1955年至2024年间美国境内的冰雹移动轨迹。冰雹路径用于呈现单次冰雹事件的行进路线。据NOAA定义："冰雹是一种固态降水形式，形成于雷暴上升气流内部。冰雹可损毁航空器、住宅与汽车，对牲畜及人类亦具有致命威胁。当雨滴被雷暴上升气流携带至大气极寒区域并冻结时，便形成冰雹核；随后冰雹通过与液态水滴碰撞并使其附着于自身表面不断增大。当冰雹重量足以克服雷暴上升气流的托举力时，便在重力作用下坠落至地面。"内布拉斯加州奥马哈市超级冰雹事件。数据更新至2024年12月30日。数据来源：风暴预测中心（Storm Prediction Center，SPC）。数据修改说明：新增Date_Calc字段。参考资料：《极端天气101——冰雹》（Severe Weather 101 - Hail）、美国国家强风暴实验室（National Severe Storms Laboratory, NSSL）冰雹研究成果。支持文档：SPC龙卷风、冰雹与大风数据库格式规范（SPC Tornado, Hail, and Wind Database Format Specification）。如需反馈，请联系：[e-mail]。缩略图来源：Esri底图。另据NOAA介绍，其核心使命为："理解并预测气候、天气、海洋与海岸带的变化，向公众分享相关知识与信息，并保护及管理海岸与海洋生态系统及资源。"