weather mapping.

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Geographic Information Systems

WDT’s complete GIS offering is available via ESRI Map Services served from our ArcGIS Server infrastructure hosted on Amazon Web Services. Weather mapping services can be applied via direct ArcGIS Server connection using ArcMap or through utilization of the RESTful endpoints.

Tell Your Story

WeatherOps GIS helps you tell your story through interactive mapping technology by providing the largest selection of weather layers on the market today. Make your message clear with precision weather data from WeatherOps. Check out story map showcasing our map layers!

We Scale with You

When considering a data provider, precision is key but ability to scale as your needs require is vital. WeatherOps data is served from AWS in a completely scaleable environment.

Easy to use REST endpoints

WDT's Map Services are exposed through ArcGIS Server REST endpoints enabling users to quickly add past, present, and future weather data to any ESRI maps and apps.

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Radar Mosaics

North American radar mosaics, quality controlled in real-time to remove non-weather artifacts from the data.

This process creates easier identification of precipitation and potentially hazardous weather. Contoured reflectivity polygons available in single scan updating every 5 minutes, as well as a time aware service showing the last 180 min loop in 5 min time steps.

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Future Radar

Overlay a combination of radar data and models that predict where storms will be in the next 15-120 minutes.

Our future radar product appears just like radar reflectivity mosaics. This makes for easy transition from real-time radar mosaics to the forecast mosaic so that you don’t notice a difference in look and feel.

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Surface Observations

Most comprehensive surface observation data aggregation for the Continental U.S. from a variety of public, research and private sources.

This point data updates every 5 minutes and reveals the current observations for the following weather variables: temperature, relative humidity, and wind speed and direction indicated by wind barbs.

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IR Satellite

This gridded map service updates every 30 minutes indicating cloud top temperatures.

Because cloud top temperatures correlate with cloud height, the height of the cloud can be estimated. Colder temperatures indicate higher clouds which indicate stronger convection (stronger storm).

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NWS Watch, Warning & Advisory

A polygon map service updated as products are issued by the NWS.

NWS Watches, Warnings, and Advisories include Severe Thunderstorm Watches, Tornado Watches, Severe Thunderstorm Warnings, Tornado Warnings, Blizzard Warnings and more. A complete listing of all NWS issued watches, warnings, and advisories can be found at

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Fronts & Pressure Centers

A point and line map service showing High and Low pressure

The high and low pressure are represented by points in addition to cold fronts, warm fronts, stationary fronts, occluded fronts, and troughs which are all indicated by lines which are conventionally symbolized. These products are issued by the NWS Weather Prediction Center for current conditions every 3 hours.

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Convective Outlook

A polygon map service containing the Storm Prediction Center’s daily issue of categorical severe weather forecasts.

These forecasts are issued for Day 1 (current day), Day 2, and Day 3 indicating likelihood of severe weather using marginal, slight, enhanced, moderate, and high risk polygons. Day 1 updates are issued at 12am, 7am, 10:30am, 2pm, and 7pm CST, respectively. Day 1 outlooks also include probabilistic risk for severe hail (≥ 1” diameter), severe wind (≥ 58 mph), or any tornadoes. Day 2 categorical outlooks are issued (1am CST) and (11:30am CST). Day 3 categorical outlooks are issued at (2:30am CST).

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Winter Storm Outlook

Winter Storm Outlook products provide snow and freezing rain forecasts for the North America out to 3 days

Snow Forecasts probabilistically define areas where snow of 4”+, 8”+, and 12”+ is expected for Day 1, Day 2, and Day 3. The Freezing Rain Forecast categorically depicts areas at risk for more than 0.25” of ice accumulation from freezing rain using a low, medium, and high probabilities. This outlook is updated daily.

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Real-Time Lightning

As a Value Added Reseller of the Earth Networks Total Lightning Network (ENTLN), we are able to provide real-time lightning data.

The ENTLN network utilizes the latest in Time of Arrival technology to detect upwards of 95% of all lightning in the United States with an average error of less than 250 meters. ENTLN data for both cloud-to-cloud and cloud-to-ground lightning data are continuously streamed to WDT for reliable and low latency display and alerting applications. The real time lightning map service offered by WDT updates every minute depicting cloud-to-ground lightning. This map service can be set for domains as small as 50x50 miles centered on a single asset, the full Continental US, or larger domains. Pricing varies by the size of the geographic extent for which your Real Time Lightning map service will be set up.

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LPA (Lightning Prediction Algorithm)

Our Lightning Prediction Algorithm (LPA) is an algorithm that predicts the threat of lightning in the next 60 minutes categorically using moderate and high threats.

The polygons are derived and output every 5 minutes from a process that combines radar data and detected lightning. Multiple time steps of radar mosaics are used to determine the direction and velocity of all storm cells in the gridded domain. Detected lightning is then used to identify the area currently affected by lightning and advect that area along the forecast path of the storm cell.

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Tornado Tracks

Popular with energy and retail clients, our potential Tornado Tracks product analyzes real-time radar across the Continental U.S. to plot the possible track of a tornado.

When an area of rotation is identified, the algorithm is able to classify the strength of the rotation and plot the intensity. As the current day progresses, the algorithm is able to merge the areas of rotation into swaths representing where strong rotation has passed. While the current state-of-the-science technology doesn’t allow us to indicate without a doubt if a tornado is in progress, the rotational intensity does correlate to the likelihood of a tornado. This product updates every 5 minutes and is often used by first responders and emergency managers with many assets to manage. Utilities and rural electric cooperatives have relied on this product to help identify transmission lines that may have been affected rather than driving for miles in search of damaged infrastructure.

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Hail Swath

Insurance and roofing contractors find value in these polygon map services showing where hail has fallen and its approximate size. Separated into two services to show Current Day and Historical data.

WDT processes all National Weather Service WSR-88D radar data from across the US on a 24/7 basis. All of this data is then quality controlled and processed through our hail swath algorithm to determine areas where hail has fallen and what the approximate hail size was. Our algorithm outputs hail size in ¼” increments starting at ¾” up to 4” in diameter. The hail swath algorithm data is updated in real time every 5 minutes. Two map services are created to display the hail swath data:
Current Day – every day at 6Z (1am CDT/12am CST) the data are reset. The algorithm accumulates hail swath data every 5 minutes throughout the day. Users can watch hail swaths grow with time as the data set updates throughout the day.
Historical– WDT creates annual map services for archived hail swath data. The data are stored in monthly layers and attributed by date so users can query for single dates to better visualize specific hail events.

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HPA (Heavy Precipitation Algorithm)

WeatherOps combines radar data and short-term weather forecast models to identify areas of heavy precipitation and forecasts where it will be moving in the next 60 minutes.

The model takes radar mosaics over various time steps to determine the speed and direction of areas of heavy precipitation. WDT then uses the model to determine where that heavy precipitation will move identified by polygons indicating a moderate or high categorical risk. The algorithm updates every 5 minutes with a revised heavy rain forecast.

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QPE (Quantitative Precipitation Estimate)

1, 6 and 24hr precipitation accumulation is available as a 3 layer polygon map service.

Quantitative Precipitation Estimate (QPE) is a product that utilizes WDT’s quality controlled radar data as input. Based on radar data, WDT’s algorithm estimates the amount of rainfall that has fallen across an area over a 1hr, 6hr, or 24hr time period rather than just at a point where a rain gauge is located. WDT does, however, utilize the rain gauge data as ground truth for our algorithm. The rain gauge data are integrated into our QPE rainfall estimate to remove any bias introduced by the radar for the best possible rainfall estimate. The data are then contoured and made available through 3 different layers in a single map service which are differentiated by the amount of time rainfall is accumulated for: 1hr, 6hr and 24hr accumulation.

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LAPS (Current Conditions Analysis)

Our LAPS algorithm combines weather observation point data as well as model data to output a grid of current weather conditions.

This algorithm uses quality control routines and physics-based objective analysis schemes to create a grid of current weather conditions regardless of proximity to a weather observation station. The final product is a contoured polygon data, however, in the case of our “Wind Speed and Direction” product, the data is actually made available as a point data set where wind vectors (arrows) are used to symbolize the wind speed and direction. The point represents the center of each grid point. All of the LAPS current condition data services update every 30 minutes and include: Temperature, Dew Point, Relative Humidity, Wind Speed, Wind Speed and Direction, and Visiblity.

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Local Storm Reports

A point map service showing observations of severe weather that are relayed back to the National Weather Service (NWS) by storm spotters, local law enforcement, the general public, and other sources.

These reports contain information regarding the magnitude, location, and date/time of the event and are typically reported as the weather event is occurring or shortly after. WDT receives a stream of this data from the NWS and makes it available as a map service. Users can query the service by date or severe weather observation type. The map service contains LSR data back to 1/1/2014 and updates every 5 minutes with reports of the following severe weather types: Hail, Wind, Tornado, Heavy Rain, Flash Flooding, Water Spouts, Volcanic Ash, etc.

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Tropical Storm Data

Our tropical storm map service contains several layers showing all currently active tropical storms around the world.

This information is aggregated from the National Hurricane Center and the Joint Typhoon Warning Center and is typically updated every 6 hours. For all point layers (past, current or forecast), the pressure, sustained wind speed, wind gust speed, speed and direction of the tropical storm, and rating (Tropical Storm, Category 1, Category 2, Category 3, Category 4, Category 5) are available attributes. The map service shows all of the following data layers for each currently active tropical storm: Observed current location, forecast location, observed location, forecast track, observed track, forecast error cone, as well as forecasts for 34, 50 and 64kt winds or higher.

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Named Tropical Storms

Our Named Tropical Storm map service shows all of the past, current, and forecast data for a particular named tropical storm.

This information is aggregated from the National Hurricane Center (NHC) and is typically updated every 6 hours while the storm is active. The map service is still available after the tropical storm has deteriorated; however, it will cease to update once bulletins are no longer issued by either the NHC or Joint Typhoon Warning Center (JTWC). The map service shows all of the following data for a particular named tropical storm: Observed current location, forecast location, observed location, forecast track, observed track, forecast error cone, as well as forecasts for 34, 50 and 64kt winds or higher.

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Tropical Model Forecasts

This map service provides forecasts for tropical storms from a variety of weather forecast models for all currently active tropical storms across the globe.

The map service updates every 10 minutes; however, each model periodically updates on its own schedule. Data include the time of the model run and the location of the tropical storm at each forecast hour. All times are UTC. Please note that not all models are available for all storms. WDT will publish the forecast tracks for all available forecast models when available.

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