NEXRAD Base Velocity

Where are areas of rotation?

With the Base Velocity product, you can check for areas of circulation inside a storm, which could indicate areas favorable for tornado formation. In this example, the red next to the green indicates rotation. Pick from one of the 4 elevation angles that the radar scans.

Additional Samples:
US and World Surface Observations
Forecast Model Data
AccuWeather Forecasts and Summaries
Text Products From National Weather Service
Severe Thunderstorm Products
Hurricane Products
Winter Storm Products