Weather Mapping And Interpretation - Garmin G1000 Manual

HAZARD AVOIDANCE

WEATHER MAPPING AND INTERPRETATION

WEATHER DISPLAY INTERPRETATION
When evaluating various target returns on the weather radar display, the colors denote precipitation
intensity and rates shown in the table.
Weather Mode Color
Black
Green
Yellow
Red (GWX 68)
Red (GWX 70)
Magenta (GWX 68 only)
A precipitation intensity scale appears on the Weather Radar Page (Figure 6-102). The colors shown on the
scale correspond to the colors shown in Table 6-11.
The system does not display magenta for precipitation in GWX 70 installations, although magenta
NOTE:
appears on the scale in Weather mode.
t
hUnDeRstORms
Updrafts and downdrafts in thunderstorms carry water through the cloud. The more severe the drafts, the
greater the number and size of the precipitation droplets. With this in mind, the following interpretations
can be made from what is displayed on the weather radar. Avoid these areas by an extra wide margin.
• In areas where the displayed target intensity is red or magenta (indicating large amounts of precipitation),
the turbulence is considered severe.
• Areas that show steep color gradients (intense color changes) over thin bands or short distances suggest
irregular rainfall rate and strong turbulence.
410
Intensity
< 23 dBZ
23 dBZ to < 32 dBZ
32 dBZ to < 41 dBZ
41 dBZ to < 50 dBZ
41 dBz and greater
50 dBZ and greater
Table 6-11 Precipitation Intensity Levels (GWX 68 and GWX 70)
Figure 6-102 Precipitation Intensity Scale on the Weather Radar Page
Garmin G1000 Pilot's Guide for the Socata TBM 850/900
Approximate
Precipitation Rate (in/hr.)
< .01.
.01 - 0.1.
0.1 - 0.5
0.5 - 2
0.5 and greater
> 2
190-00709-05 Rev. D