weather

Here is the link I use for fast viewing of weather. It is centered over South Dakota but you can quickly zoom out or click it with your mouse to drag the map to any area... and then zoom in very very close. You can also use the layers (drop down box) to find out where the alerts are...and which direction the cells are moving.

Radar

Another link I use to plan for the best weather at different departure times... is Weather Underground. Weather Underground