Tornado
Distinct rotating column beneath wall cloud in connection with the ground
Waterspout
Tornado over water often quite tall and skinny
Damage
Severe weather damage
Dense Fog
Water vapor condensing into clouds at ground level
Freezing Rain
Liquid rain freezes to ground and elevated surfaces on contact.
Heavy Snow
Snow accumulating quickly with low visibility
Large Hail
Icy stones typicaly found with thunderstorm activitiy, with diameter greater than pea-size or 0.25 inches
Non T-Storm Wind
Wind not associated with convective thunderstorm activity
Sleet
Clear ice pellets or white graupel, mostly spherical in shape
Snow
Light or moderate accumulating snowfall
T-Storm Wind
Thunderstorm wind gust either estimated or measured
Flash Flood
Any situation where water is blocking land or roads causing problems
Rain
Liquid precipitation (inches)