NOAA Storm Reports

This map contains continuously updated U.S. tornado reports, wind storm reports and hail storm reports. Click each feature to receive information about the specific location and read a short description about the issue. Now contains ALL available Incident Report types, for a total of 15, not just Hail; Wind; and Tornados. See new layer for details or Feature Layer Item with exclusive Past 24-Hour ALL Storm Reports Layer. Each layer is updated 4 times hourly from data provided by NOAA’s National Weather Service Storm Prediction Center. A full archive of storm events can be accessed from the NOAA National Centers for Environmental Information. Source NOAA Storm Prediction Center https://www.spc.noaa.gov/climo/reports NOAA ALL Storm Reports layer https://www.spc.noaa.gov/exper/reports Sample Data See Sample Layer Item for sample data during inactive periods! Update Frequency The service is updated every 15 minutes using the Aggregated Live Feeds Methodology Area Covered CONUS (Contiguous United States) What can you do with this layer? This map service is suitable for data discovery and visualization. Change the symbology of each layer using single or bi-variate smart mapping. For instance, use size or color to indicate the intensity of a tornado. Click each feature to receive information about the specific location and read a short description about the issue. Query the attributes to show only specific event types or locations. Revisions Jan 26, 2028: Updated field aliases, descriptions and value types to improve clarity. Aug 10, 2021: Updated Classic Layers to use new Symbols. Corrected Layer Order Presentation. Updated Thumbnail. Aug 8, 2021: Update to layer-popups, correcting link URLs. Expanded length of 'Comment' fields to 1kb of text. New Layer added that includes ALL available Incident Types and Age in 'Hours Old'. This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency. If you would like to be alerted to potential issues or simply see when this service will update next, please visit our Live Feed Status Page.本地图包含持续更新的美国龙卷风、风暴及冰雹灾害报告。点击任意要素即可查看其具体位置信息与该灾害事件的简要说明。 当前已涵盖全部15种可用的事件报告类型，并非仅包含冰雹、大风与龙卷风三类。可通过新图层或专属的「过去24小时全风暴报告图层」要素图层项查看详细信息。 所有图层均每小时更新四次，数据来源为美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，简称NOAA）国家气象局风暴预测中心（Storm Prediction Center）。完整的风暴事件档案可通过NOAA国家环境信息中心获取。 数据来源：NOAA风暴预测中心，访问地址：https://www.spc.noaa.gov/climo/reports NOAA全风暴报告图层：https://www.spc.noaa.gov/exper/reports 示例数据：服务静默期的示例数据可通过示例图层项查看。 更新频率：本服务采用聚合实时馈送方法，每15分钟更新一次。 覆盖范围：美国本土连续48州（Contiguous United States，简称CONUS）。 本地图服务适用于数据发现与可视化展示。可通过单变量或双变量智能制图功能修改各图层的符号系统，例如使用符号尺寸或颜色表征龙卷风的强度等级。点击任意要素即可查看其具体位置与该事件的简要说明。可通过属性查询功能筛选特定事件类型或区域的数据。 更新日志： 2028年1月26日：更新字段别名、描述与值类型以提升可读性。 2021年8月10日：更新经典图层符号系统，修正图层顺序展示问题，并更新缩略图。 2021年8月8日：更新图层弹窗功能，修正链接URL，将"Comment"字段的文本长度扩展至1KB；新增包含全部事件类型与「事件时长（小时）」的新图层。 本地图仅用于信息展示，未进行7×24小时的准确性与时效性监控。若您希望接收潜在问题告警或查看本服务的下次更新时间，请访问我们的实时馈送状态页面。