V--Notch Echo, Pendant Shape - Honeywell Primus 880 Pilot's Manual

PRIMUSr 880 Digital Weather Radar System
There are many patterns on radar that resemble hook echoes but are
not associated with severe weather. Severe weather hook echoes last
at least 5 minutes and are less than 25 miles in diameter. The favored
location for hook echoes is to the right rear of a large and strong cell,
however, in rare cases tornadoes occur with hooks in other parts of the
cell.
AVOID V- NOTCH BY 20 MILES
A large isolated echo will sometimes have the configuration that is
shown in figure 5- 43. This echo is called V- notch or flying eagle
although some imagination may be needed by the reader to see
the eagle. V- notch echoes are formed by the wind pattern at the
leading edge (left front) of the echo. Thunderstorm echoes with
V- notches are often severe, containing strong gusty winds, hail,
or funnel clouds, but not all V- notches indicate severe weather. Again,
severe weather is most likely at S in figure 5- 43.
N
v
s
echo movement
AD- 15561- R1@
V- Notch Echo, Pendant Shape
Figure 5- 43
A28- 1146- 102- 00
Radar Facts
5-62