Racecast Weather partners (sites that use our forecasts or provide photos for our graphics):

Pirelli World Challenge
Road America
North American Sportscar
Prescott Motorsport
The Apex
Live Full Throttle
Single Seater
Slipstream Network
David Yowe Motorsports Images
Loftis Photography
RacingTvSchedule.com

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Series websites:

IMSA - WeatherTech SportsCar Championship and Continental Tire SportsCar Challenge
IndyCar
Mazda Road To Indy - Indy Lights, Pro Mazda, USF2000
Pirelli World Challenge
Trans Am
SCCA National Championship Runoffs
NASA Championships

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Favorite weather links:

NOAA Storm Prediction Center
SPC Forecast Tools
NOAA Weather Prediction Center
RAP Real-Time Weather Data
Penn State E-Wall
NSSL-WRF Realtime forecasts
NCAR Ensemble forecasts
Iowa State Meteogram Generator
HRRR Model Fields
MOS Forecast Products
GFS LAMP Real-Time Products
Navy FNMOC Global Maps
Weather Online Europe
NCEP Global Model Guidance
NWS Enhanced Data Display
NWS Mesonet Observations
Pivotal Weather

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