RoadWX a service provided by GWC RoadWX services provided by GWC

RoadWX

Road Surface Conditions and
Forecast Data Services

Global Weather Corporation’s RoadWX® service provides estimated road surface conditions and forecasts for any road location in the world – whether that location is associated with Road Weather Information Sensor (RWIS) data or not. RoadWX delivers accurate estimates of road conditions to enable applications such as road weather warnings, navigation guidance, and route optimization. Typical users include commercial fleets, consumer vehicles, and transportation departments. When available, connected vehicle data is used to modify and improve the forecast.

RoadWX combines two critical modeling steps, as shown in this diagram. The first is GWC’s best-in-the-world atmospheric forecast.1 The second is our road physics model, which utilizes radiation transfer algorithms to compute road surface (concrete or pavement) temperature using current weather and road state history as inputs. Accurately predicting road temperature is critical to forecasting road state correctly, making it possible to distinguish between snowfall melting on warm roads or accumulating on cold roads.

GWC road temperature accuracy has been verified by comparison to RWIS observations, shown to the right. As shown in the map below, RoadWX forecasts can distinguish between key road states (dry, wet, snow, and ice) even within a localized area.

GWC | Modeling for Pavement Temperature and Road Conditions
GWC | RoadWX Real Time Road Conditions Map

Specifications

RoadWX data is generated at hourly and sub-hourly intervals, with forecast lead times available to 48 hours. It includes both atmospheric weather variables and road surface variables (road temperature and condition), as summarized below.

Two versions of RoadWX are available:

  • For user-defined intervals (such as every 1/2-km) along roads anywhere in the world
  • At RWIS sensor locations

Data for RoadWX Services

VARIABLES AVAILABLE


Atmospheric Variables

  • Temperature
  • Wind Speed
  • Wind Direction
  • Precipitation Amount
  • Precipitation Type: Rain, Snow, Mix, Sleet, Freezing Rain

Road Conditions

  • Road Temperature
  • Water Depth
  • Snow Depth
  • Road State: Dry, Wet, Wet/Drying, Slush, Snow/Ice
  • Impact Codes (Worst-case, Hazards)

DELIVERY METHODS


  • Bulk, CSV format through standard secure HTTPS web services
  • On Demand, requested via API and delivered in XML format through restful web services using the URI/http method
GWC | RoadWX POST-PROCESSING TECHNOLOGY

Weekend Road Conditions PreviewTM

Weekend Road Conditions Preview™

The Weekend Road Conditions Preview™, as shown above and to the right, is a free subscription program from GWC, the world's most accurate weather forecast company. As a valued friend, we are happy to provide this preview to you on a weekly basis during the winter driving season. It is available for either North America or Europe. To receive these previews subscribe by clicking here.

The Preview illustrates the more comprehensive RoadWX® professional forecast service available to GWC customers. RoadWX forecasts road surface conditions (dry, wet, slush, snow/ice) at road increments of 1 km or less, and also provides the corresponding road-specific atmospheric weather forecasts. This service delivers national, regional, or by-route forecasts, updated as often as every five minutes. RoadWX is used for overviews, alerting, and route optimization. Information on how to get started using our forecasting services is available here.

Weekend Road Conditions Preview™

Archives of our Weekend Road Conditions PreviewTM

  1. March 17th, 2017
    Weekend Road Conditions Preview 03/17/2017


    "In North America, wet roads across the Midwest and Pacific Northwest with some slushy spots in Wisconsin."

    "In Europe, wet roads for most of the weekend in Central Europe with snowy road conditions across Norway."


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    Weekend Road Conditions Preview 03/17/2017
  2. March 24th, 2017
    Weekend Road Conditions Preview 03/24/2017


    "In North America, widespread wet roads across the Southern Great Plains and Midwest from strong thunderstorms, with wet conditions along the West coast."

    "In Europe, wet roads in Southwestern Europe, with slushy and snowy road conditions in the Pyrenees."


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    Weekend Road Conditions Preview 03/24/2017
  3. March 31st, 2017
    Weekend Road Conditions Preview 03/31/2017


    "In North America, wet roads across the Great Plains, and wet in the Northeast including some slushy areas."

    "In Europe, wet road conditions across much of Western Europe, with slushy areas in Scandinavia."


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    Weekend Road Conditions Preview 03/31/2017
  4. April 7th, 2017
    Weekend Road Conditions Preview 04/07/2017


    "In North America, wet road conditions across most of the Western United States with a few slushy areas in the Sierras."

    "In Europe, a few wet areas in Central Europe with wet and slushy road conditions in Norway."


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    Weekend Road Conditions Preview 04/07/2017
  5. April 14th, 2017
    Weekend Road Conditions Preview 04/14/2017


    "In North America, wet road conditions across the Midwest and Northeast."

    "In Europe, widespread wet road conditions with only Spain and Portugal remaining dry."


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    Weekend Road Conditions Preview 04/14/2017
  6. November 17th, 2017
    Weekend Road Conditions Preview 11/17/2017


    "In North America, wet roads across the Midwest and Northeast with slushy and snowy roads in the Rockies and Ontario."

    "In Europe, a wet travel weekend with widespread slushy and snowy roads across Norway and the Alps, and wet roads throughout Germany and France."


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    Weekend Road Conditions Preview 11/17/2017
  7. November 24th, 2017
    Weekend Road Conditions Preview 11/24/2017


    "For Thanksgiving weekend travel, dry road conditions across much of the United States with some wet roads in the Northern Plains and Pacific Northwest."

    "Extensive wet roads across Europe throughout the weekend, with snowy and slushy roads in Norway, the Alps, and UK."


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    Weekend Road Conditions Preview 11/24/2017
  8. December 1st, 2017
    Weekend Road Conditions Preview 12/1/2018


    "Mostly dry roads across the United States with wet roads in the Pacific Northwest and Rocky Mountains."

    "Widespread slushy and icy roads across Norway, Sweden, mountainous regions of Central Europe, and Germany."


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    Weekend Road Conditions Preview 12/1/2017
  9. December 8th, 2017
    Weekend Road Conditions Preview 12/8/2017


    "Wet roads with slushy and icy areas in the Southeastern United States, the upper Midwest, and the Northeast."

    "Widespread slushy and icy roads across most of Europe as multiple winter storms moving through, with wet roads in lower elevation and coastal regions."


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    Weekend Road Conditions Preview 12/8/2017
  10. December 15th, 2017
    Weekend Road Conditions Preview 12/15/2017


    "Wet and snowy roads scattered across the northeast, northern states, and northwest, with wet roads in the south-central states mid-weekend."

    "Wet, slushy, and snowy roads scattered across Europe throughout the weekend."


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    Weekend Road Conditions Preview 12/15/2017
  11. December 22nd, 2017
    Weekend Road Conditions Preview 12/22/2017


    "Wet roads across much of the south and east, with snowy roads in the northeast and the central Rockies."

    "Snowy and icy roads in the Alps and Scandinavia, with wet roads in the northern United Kingdom and Poland."


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    Weekend Road Conditions Preview 12/22/2017
  12. December 29nd, 2017
    Weekend Road Conditions Preview 12/29/2017


    "Widespread snowy and icy roads across the northern Rockies, northern plains, and Midwest."

    "A very wet weekend in Europe, with wet roads across much of the UK, France, and Germany. Snowy and icy roads in higher elevation regions of central Europe and across Scandinavia."


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    Weekend Road Conditions Preview 12/29/2017
  13. January 5th, 2018
    Weekend Road Conditions Preview 1/5/2018


    "Scattered snowy and icy roads across the northeast with wet roads in the western United States."

    "Wet roads across much of Europe with snowy and icy roads in Scandinavia."


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    Weekend Road Conditions Preview 1/5/2018
  14. January 12th, 2018
    Weekend Road Conditions Preview 1/12/2018


    "Wet roads across most of the eastern United States with slushy and snowy roads in the northeast."

    "Dry roads across much of Europe with wet roads in Portugal and Ireland."


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    Weekend Road Conditions Preview 1/12/2018
  15. January 19th, 2018
    Weekend Road Conditions Preview 1/19/2018


    "Wet roads across the west coast and the Rocky Mountains."

    "A wet weekend in Europe with wet roads in France, snowy and icy roads farther east in Europe, and a mixture of wet and snowy roads across the UK."


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    Weekend Road Conditions Preview 1/19/2018
  16. January 26th, 2018
    Weekend Road Conditions Preview 1/26/2018


    "Wet roads across the most of the eastern United States and the northwest, with a few slushy spots in the western mountains."

    "Wet roads across much of central Europe and the UK, with snow and ice in southern Norway and Sweden."


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    Weekend Road Conditions Preview 1/26/2018
  17. February 2nd, 2018
    Weekend Road Conditions Preview 2/2/2018


    "Wet roads across the Southeast and Midwest, with snowy and icy roads across the Northern Plains."

    "Scattered wet roads across much of Europe, with slushy and snowy roads in mountainous areas."


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    Weekend Road Conditions Preview 2/2/2018
  18. February 9th, 2018
    Weekend Road Conditions Preview 2/9/2018


    "Wet roads across much of the eastern United States, with slushy and snowy roads in the northeast, midwest and plains."

    "Widespread wet roads throughout France and the UK, with snowy roads in Norway and mountainous portions of France and Germany."


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    Weekend Road Conditions Preview 2/9/2018

1. According to ForecastWatch, an independent provider of forecast accuracy and skill information, GWC’s forecast was the best for 2013, 2014, and 2015. All reports are available at www.GlobalWeatherCorp.com.

Contact US

Phone

303-592-2061

Office Address

3005 Sterling Circle, Suite 201
Boulder, CO 80301