Squall Line - Honeywell PRIMUS 660 Pilot's Manual

To find a safe and comfortable route through the precipitation area,
study the radar image of the squall line while closing in on the
thunderstorm area. In the example shown in figure 5–30, radar
observation shows that the rainfall is steadily diminishing on the left
while it is very heavy in two mature cells (and increasing rapidly in a third
cell) to the right. The safest and most comfortable course lies to the left
where the storm is decaying into a light rain. The growing cell on the
right should be given a wide berth.
DECAYING
CELLS
A28–1146–111
REV 2
PRIMUS
AREAS OF MAXIMUM TURBULENCE
MATURE CELLS
OUTLINE OF RAIN AREA VISIBLE TO RADAR

Squall Line

Figure 5–30
R
660 Digital Weather Radar System
GROWING
BEST DETOUR
CELLS
AD–12058–R1@
Radar Facts
5-27