CustomWeather | Flood Risk Data | 5-Day Ahead Flood Outlook PDFs | Map Data| Severe Weather Data | Weather Forecasts | Storm Data

CustomWeather's flood risk data forecasts are based on past, current, and future precipitation compared to the typical precipitation expected during the period. We look at the past three days and the next three days of precipitation and then compare it to the expected during the 5-day period ahead (dynamically moving the typical precipitation amounts day by day). Files can be delivered as kmz/kml, map tile, or geotiff/ shape files. Map Data. CustomWeather's Approach: Historical and forecast precipitation is compared to typical precipitation and rainfall statistics such as IDF and Rainfall Return to determine whether recent rain and forecast rain will cause flooding. Past rainfall is based on satellite derived precipitation (10 Km / hourly resolution). Recent days are considered as well as longer term rainfall (14 day / 30 day) considered as input into flood potential model. Rain vs snow is considered – snow fall will not cause flooding. Rain on snow or snow melt is considered – rain on snow will increase flood potential and constant snow melt due to warm temperatures will influence flood potential 70 N to 70 S / 180 W to 180 E / 0.1 degree resolution Updated 1 x day (can be updated 4 x day dependent on requirements. Analysis and daily forecasts out to five days – can be adjusted based on requirements. Definitions of Flood Potential: (Tiff value and definition) 0: No Flooding: No flooding expected 1: Possible Flooding: Rainfall and/or snow melt may cause flooding 2: Probable Flooding: Rainfall and/or snow melt likely to cause flooding 3: Flooding: Flooding expected in favorable areas 4: Significant Flooding: Flooding expected in favorable areas and more widespread 5: More Significant Flooding: Flooding expected to be widespread NOTE: definitions can be adjusted as needed. Current definitions coordinated with USACE and based on typical rainfall and extreme rainfall statistics. This flood risk data represents part of CustomWeather's comprehensive data offerings, covering the entire life cycle of weather - past, present, and future. This CustomWeather map data serves the following categories: Global Weather Data, Place Data, Precipitation Data, Rainfall Data, Surface Data, Storm Data, Risk Data, Weather Forecasts, Natural Disasters Data, and Severe Weather Data.

搜集汇总

背景与挑战

背景概述

该数据集提供全球洪水风险预测，基于历史、当前和未来降水与典型降水的对比分析，覆盖70°N至70°S区域，分辨率为0.1度，每日更新1-4次。预测结果以kmz/kml、地图瓦片或geotiff/shape文件格式交付，并包含从0（无洪水）到5（广泛洪水）的洪水潜力分级定义，用于评估降雨和融雪导致的洪水风险。