Everyone in public safety from the Rockies to the Atlantic should own and
read this book; "Tornado Watch--Meteorology

of Severe Storms for Spotters, Chasers and Enthusiasts", By David Salmon.

David was a 20+ year spotter for his community, 6 years the community's EMD,
(is) a meteorologist for 30 years.

"The book provides an excellent reference guide to Emergency Managers, and
others, who need a handy, easily understandable guide to operational
meteorology."

Dr, Joe Shaefer, Director,
NOAA's Storm Prediction Center.

Recommendations don't come any higher.

http://www.wxderive.net/tornadowatch.html