Observation Types

Current breakdown of all active observation types on WISCONSINWX.COM. New observation types will be added as they become available.
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
High Wind
Wind not associated with convective thunderstorm activity
Large Hail
Ice stones with diameter greater than pea-sized or 0.25"
Sleet
Clear ice pellets or white graupel, mostly spherical in shape
Snow
Light or moderate accumulating snowfall
Thunderstorm Wind
Thunderstorm wind gust either estimated or measured
Flood
Any situation where water is blocking land or roads causing problems
Rain
Liquid precipitation (inches)
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