I like this old-fashioned surface map to see what's coming up:
http://www.hpc.ncep.noaa.gov/noaa/noaa.gif

I like this radar site. If you have a big monitor, it's awesome. Scroll, don't click.
http://www.srh.noaa.gov/ridge/Conus/full_loop.php

I like this one to keep track of drought conditions:
http://www.weather.com/maps/Desktop/dtgarden/ussoilmoisture_large.html

Finally, this one is a great hurricane site. When a hurricane threatens, this page stays locked on my browser. The computer models have been 100% the last few years. http://www.weatherunderground.com/tropical/

Shrimp