Radar And Visual Cloud Mass - Honeywell PRIMUS 660 Pilot's Manual

R
PRIMUS 660 Digital Weather Radar System
As masses of warm, moist air are hurled upward to meet the colder air
above, the moisture condenses and builds into raindrops heavy
enough to fall downward through the updraft. When this precipitation is
heavy enough, it can reverse the updraft. Between these downdrafts
(shafts of rain), updrafts continue at tremendous velocities. It is not
surprising, therefore, that the areas of maximum turbulence are near
these interfaces between updraft and downdraft. Keep these facts in
mind when tempted to crowd a rain shaft or to fly over an
innocent–looking cumulus cloud.
Radar Facts
5-26
VISIBLE CLOUD MASS
RED ZONE
RAIN AREA
0 20
NAUTICAL MILES

Radar and Visual Cloud Mass

Figure 5–29
RAIN AREA
(ONLY THIS IS
VISIBLE ON RADAR)
WITHIN
40 60
RED LEVEL*
80
AD–12057–R3@
A28–1146–111
REV 2