with a radar:
- We now have a national network of
radars called the Weather Surveillance Radar (WSR-88D) that can observe tornadic storms
- recall that the tornado forms from
the mesocyclone at low levels.
- the mesocyclone can be observed
with a radar and is called a "hook echo"
- Here is another example of a hook echo
- Important!!!: the radar can not see the tornado
itself since the scale of the tornadic circulation
is very small (on average 100 m wide).
- The radar can see the mesocyclone
which is 2-4 km wide.