National Weather Service Ice Accumulation Forecast

This map displays the predicted ice accumulation for the next 72 hours across the contiguous United States. Data are updated hourly from the National Digital Forecast Database (NDFD) produced by the National Weather Service. The dataset includes incremental and cumulative precipitation 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) layer or the "Accumulation by Time" (cumulative) layer 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 forecast data 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.iceaccum.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未来72小时的预估积冰量。数据由美国国家气象局（National Weather Service）制作的国家数字预报数据库（National Digital Forecast Database, NDFD）每小时更新一次。该数据集包含每6小时间隔的增量与累积降水数据。在ArcGIS Online地图查看器中，您可启用时间动画功能，并选择「按时间统计的降水量（增量型）」图层或「按时间统计的累积降水量（累积型）」图层，以查看为期72小时的预报降水动画。所有时间均按照您的本地时区显示。数据来源为何？国家数字预报数据库（NDFD）旨在通过中央节点提供数字化形式的天气预报访问服务。NDFD可生成各类可感知气象要素的预报数据，其包含由美国国家气象局（National Weather Service, NWS）野外办公室与美国国家环境预报中心（National Centers for Environmental Prediction, NCEP）协同制作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.iceaccum.bin。如何获取其他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，可通过ArcGIS Server发布为地图服务，或用于更新ArcGIS Online或ArcGIS Enterprise中的托管要素服务。该图层服务可用于数据探索与可视化。点击地图即可识别要素并显示预配置的弹窗信息。通过启用时间动画功能，借助时间滑块查看支持时间维度的数据。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！