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
Radar Facts | A28- 1146- 102- 00 |
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