National Weather Service Precipitation Forecast

This map displays the Quantitative Precipitation Forecast (QPF) for the next 72 hours across the contiguous United States, Alaska, Hawaii, and Puerto Rico. Data are updated hourly from the National Digital Forecast Database 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: CONUS: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.conus/VP.001-003/ds.qpf.bin ALASKA: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.alaska/VP.001-003/ds.qpf.bin HAWAII: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.hawaii/VP.001-003/ds.qpf.bin GUAM: Not Available PUERTO RICO: https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.puertori/VP.001-003/ds.qpf.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. Revisions Jul 24, 2026: Added 15 minute refresh Interval to all layers. Jan 25, 2026: Added data for Alaska, Hawaii, and Puerto Rico identified by ‘region’ field for filtering. 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、阿拉斯加、夏威夷以及波多黎各未来72小时的定量降水预报（Quantitative Precipitation Forecast, QPF）。数据每小时更新一次，源自美国国家气象局（National Weather Service, NWS）制作的国家数字预报数据库（National Digital Forecast Database, NDFD）。该数据集包含以6小时间隔划分的增量与累计降水数据。在ArcGIS Online地图查看器中，您可启用时间动画功能，并选择「逐时段增量降水量」图层或「累计降水量」图层，以查看未来72小时的预报降水动态动画。所有时间均按照您的本地时区显示。 数据来源说明：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数据。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（NWS）各野外办事处与国家环境预报中心（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）。 数据来源地址如下： 美国本土：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.conus/VP.001-003/ds.qpf.bin 阿拉斯加：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.alaska/VP.001-003/ds.qpf.bin 夏威夷：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.hawaii/VP.001-003/ds.qpf.bin 关岛：暂无可用数据 波多黎各：https://tgftp.nws.noaa.gov/SL.us008001/ST.opnl/DF.gr2/DC.ndfd/AR.puertori/VP.001-003/ds.qpf.bin 如何获取其他NDFD数据？ 本源数据通过聚合实时馈送（Aggregated Live Feeds）方法进行下载与解析，可通过ArcGIS Server以地图服务形式对外提供，或用于更新在线版或企业版托管要素服务。 本地图服务适用于数据探索与可视化。您可点击地图识别要素，查看预配置的弹窗信息；启用时间动画功能后，可通过时间滑块查看支持时间维度的数据集。 更新记录 2026年7月24日：为所有图层新增15分钟刷新间隔。 2026年1月25日：新增阿拉斯加、夏威夷及波多黎各数据，可通过「区域」字段进行筛选。 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预警或查询本服务的下次更新时间，请访问我们的实时馈送状态页面！