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YOUR ONE-STOP TRAVEL INFO SHOP
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OVERVIEW

• Screen Shots of FORETELL

• MM5 Model Update

• Decision Support Update

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What is FORETELL?

• Mid-western state cooperative project

• More detailed resolution and greater time
  accuracy than most other sources

• Detailed forecast conditions up to 24 hours

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Types of Weather Information Available from
FORETELL

• Precipitation (type and intensity)
• Temperature (air and dew point)
• Cloud cover
• Wind (speed and direction)
• Forecasted radar
• Barometric Pressure
• 24 hour Precipitation Accumulation
• Combined precipitation and temperature

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• PRECIPITATION

User Defined Zoom
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• PRECIPITATION

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• TEMPERATURE

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• DEWPOINT TEMP

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• CLOUDS

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• FORECASTED RADAR

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• PRECIP ACCUMULATION

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• FROZEN ACCUMULATION

Model Run Frozen Accumulation
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• WINDS

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• GRAPHING DATA

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• ANIMATING DATA

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How does FORETELL work?

• National Weather Service (NWS) data
• Using LAPS Analysis
• LDM
• MM5 Weather Model (10KM Grid)
• Developed by John Snook
• CORRA running MM5 models across country
• Incorporates surface station observations

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MM5 Model

• Update to New MM5 Version Completed
• Updating to Version 3
• Benefits
• 20 Faster
• Can now forecast 30 hours ahead
• expecting improved surface temperatures
• expecting improved precipitation measures

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USERS ALSO NEEDROAD SURFACE CONDITION INFO
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ROAD CONDITIONS

• Ice Prediction Model currently used by FORETELL

• Drifting Snow Model added this winter

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Components Used ...
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• ROAD CONDITIONS

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• ROAD PAVEMENT TEMP

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• DEWPOINT at ROAD

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FORETELL Decision Support

Support Operators with a - Route by Route
display of most critical parameter for them to
monitor - Interpret data using CRREL models
and experience
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FORETELL Decision Support

Flags Which Roads are Impacted by - Frost -
Snow Drifting - Ice (reduced traction) - Snow
Accumulation
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Details of Most Critical Conditions

Frost - Likelihood of Frost Occurring Reduced
Traction - How Driveable is the Road Snow
(drift and accumulation) - Amount expected -
Time expected
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FORETELL OFFICIALRIBBON CUTTINGDECEMBER 9,
2000 AASHTO Mtg In Indianapolis