NEXRAD Base Reflectivity and StormTimer ^TM

Where are they specifically, and where are they headed?

The local NEXRAD Base Reflectivity shows the storms' positions locally by diplaying the intensity of the precipitation. Choose from one of the 4 elevation angles that the radar scans. The optional StormPath timer shows the locations of the individual storms, plotted every 15 minutes into the future. The map shows county boundaries, and has the option to plot city identifiers, rivers, major highways, or even railroads.

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