How it Works

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The PrecipAlert service provides rainfall data for the continental United States (CONUS) based upon information generated by the National Weather Service’s (NWS) 144 Nexrad radar stations. The radar estimated rainfall is collected continuously and then compiled once an hour to calculate the total hourly rainfall. The rainfall totals then incorporate “ground truthing” using a multi-sensor (radar+gauges) precipitation analyses which refines the radar derived rainfall data using rain gauge measurements from thousands of locations. The resulting rainfall data represents an accurate accounting of rainfall down to a 4 kilometer area (~2.5 x 2.5 miles).

The PrecipAlert service also provides area forecast rainfall amounts based upon model data generated in various cycles daily by the National Weather Service. PrecipAlert utilizes this data (the same data used by NWS forecasters) in order to capture forecasted rainfall amounts down to the GIS level.  By monitoring this information for each of your designated locations, PrecipAlert notifies you when the selected thresholds which you determine are reached.

Creating your locations and establishing your alerts is as easy as dropping a pin on a map and selecting your monitor settings.  Get started today!