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PRIMUS
R
660 Digital Weather Radar System
A28–1146–111
REV 2 5-53
Radar Facts
AVOID LINE ECHO WAVE PATTERNS (LEWP) BY 20 MILES
One portion of a line can accelerate and cause the line to
assume a wave–like configuration. Figure 5–45 is an example of an
LEWP. The most severe weather is likely at S. LEWPs form solid or
nearly solid lines that are dangerous to aircraft operations and
disruptive to normal air traffic flow.
N
AD–15562–R1@
S
Line Echo Wave Pattern (LEWP)
Figure 5–45
The S indicates the location of the greatest hazards to aviation. The
next greatest probability is anywhere along the advancing (usually east
or southeast) edge of the line.