National Weather Service Snowfall Forecast

This map displays the expected total accumulation of new snow over the next 72 hours across the contiguous United States. Data are updated hourly from the National Digital Forecast Database produced by the National Weather Service. The dataset includes incremental and cumulative snowfall data in 6-hour intervals. In the ArcGIS Online map viewer you can enable the time animation feature and select either the amount by time (incremental) or accumulation by time (cumulative) layers to view a 72-hour animation of forecast precipitation. All times are reported according to your local time zone. Where is the data coming from? The National Digital Forecast Database (NDFD) was designed to provide access to weather forecasts in digital form from a central location. The NDFD produces gridded forecasts of sensible weather elements. NDFD contains a seamless mosaic of digital forecasts from National Weather Service (NWS) field offices working in collaboration with the National Centers for Environmental Prediction (NCEP). All of these organizations are under the administration of the National Oceanic and Atmospheric Administration (NOAA). Source: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.conus/VP.001-003/ds.snow.bin Where can I find other NDFD data? The Source data is downloaded and parsed using the Aggregated Live Feeds methodology to return information that can be served through ArcGIS Server as a map service or used to update Hosted Feature Services in Online or Enterprise. What can you do with this layer? This map service is suitable for data discovery and visualization. Identify features by clicking on the map to reveal the pre-configured pop-ups. View the time-enabled data using the time slider by Enabling Time Animation. 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!

本地图展示了美国本土地区未来72小时内新增降雪的预期总累积量。数据由美国国家气象局（National Weather Service）生成的国家数字预报数据库（National Digital Forecast Database）每小时更新一次。该数据集包含每6小时间隔的增量降雪与累积降雪数据。在ArcGIS Online地图查看器中，您可启用时间动画功能，并选择按时间统计的增量降雪量图层或累积降雪量图层，以查看72小时的预报降水动画。所有时间均按照您所在的本地时区显示。
数据源自何处？国家数字预报数据库（National Digital Forecast Database, NDFD）旨在通过中央节点提供数字化形式的气象预报访问服务。NDFD可生成各类可感知气象要素的格点预报产品，其数据是由美国国家气象局（National Weather Service, NWS）各野外办事处与美国国家环境预报中心（National Centers for Environmental Prediction, NCEP）协同生成的无缝数字化预报镶嵌图。上述所有机构均隶属于美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）。数据来源地址：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.conus/VP.001-003/ds.snow.bin
我可在哪里获取其他NDFD数据？本数据源通过聚合实时馈送（Aggregated Live Feeds）方法进行下载与解析，可生成可通过ArcGIS Server发布为地图服务的信息，或用于更新ArcGIS Online或ArcGIS Enterprise中的托管要素服务。
您可通过该图层实现哪些功能？本地图服务适用于数据探索与可视化操作。点击地图即可识别要素并调出预配置的弹窗信息。通过启用时间动画功能，使用时间滑块即可查看支持时间维度的数据集。本地图仅用于提供信息参考，未进行全天候的准确性与时效性监控。若您希望接收潜在问题告警，或仅需了解本服务的下次更新时间，请访问我们的实时馈送状态页面！