<s>
The	O
Lemon	B-Algorithm
technique	I-Algorithm
is	O
a	O
method	O
used	O
by	O
meteorologists	O
using	O
weather	B-Application
radar	I-Application
to	O
determine	O
the	O
relative	O
strength	O
of	O
thunderstorm	O
cells	O
in	O
a	O
vertically	O
sheared	O
environment	O
.	O
</s>
<s>
The	O
Lemon	B-Algorithm
technique	I-Algorithm
is	O
largely	O
a	O
continuation	O
of	O
work	O
by	O
Keith	O
A	O
.	O
Browning	O
,	O
who	O
first	O
identified	O
and	O
named	O
the	O
supercell	O
.	O
</s>
<s>
The	O
method	O
focuses	O
on	O
updrafts	O
and	O
uses	O
weather	B-Application
radar	I-Application
to	O
measure	O
quantities	O
such	O
as	O
height	O
(	O
echo	O
tops	O
)	O
,	O
reflectivity	O
(	O
such	O
as	O
morphology	O
and	O
gradient	O
)	O
,	O
and	O
location	O
to	O
show	O
features	O
and	O
trends	O
described	O
by	O
Lemon	O
.	O
</s>
<s>
Echo	B-Algorithm
overhang	I-Algorithm
-	O
In	O
intense	O
thunderstorms	O
,	O
an	O
area	O
of	O
very	O
strong	O
reflectivity	O
atop	O
the	O
weak	B-Algorithm
echo	I-Algorithm
region	I-Algorithm
and	O
on	O
the	O
low-level	O
inflow	O
inside	O
side	O
of	O
the	O
storm	O
.	O
</s>
<s>
Weak	B-Algorithm
echo	I-Algorithm
region	I-Algorithm
(	O
WER	O
)	O
-	O
An	O
area	O
of	O
markedly	O
lower	O
reflectivity	O
,	O
resulting	O
from	O
an	O
increase	O
in	O
updraft	O
strength	O
.	O
</s>
<s>
Bounded	B-Algorithm
weak	I-Algorithm
echo	I-Algorithm
region	I-Algorithm
(	O
BWER	B-Algorithm
)	O
-	O
Another	O
area	O
of	O
markedly	O
lower	O
reflectivity	O
,	O
now	O
bounded	O
by	O
an	O
area	O
of	O
high	O
reflectivity	O
.	O
</s>
<s>
A	O
mesocyclone	O
is	O
not	O
strictly	O
necessary	O
for	O
BWER	B-Algorithm
development	O
.	O
</s>
<s>
Storm	O
rotation	O
can	O
be	O
reliably	O
detected	O
by	O
the	O
Doppler	O
velocities	O
of	O
a	O
weather	B-Application
radar	I-Application
.	O
</s>
