GPS 400 Pilot’s Guide and Reference
190-00140-60 Rev. E
10-28
SECTION 10
ADDITIONAL FEATURES
The symbol in Figure 10-37 indicates the ceiling at
KMWM is marginal VFR, with heavy snow and low IFR
visibility. The data age is 31-60 minutes old.
Ceiling and Visibility - Flight Rules
VFR
(green bars)
Marginal VFR
(green bars)
IFR
(yellow bars)
Low IFR
(yellow bars)
Table 10-13 Ceiling and Visibility Graphics
Ceiling
Precipitation
Visibility
Station Identifier
Data Age
Figure 10-37 METAR Symbol
Winds
Wind Vector - The wind vector indicates the
direction of the surface wind to the nearest 30˚
increment (e.g. 30˚, 60˚, 90˚, 120˚, etc.).
Wind Speed - In general, the sum of the wind barbs
(see Table 10-14) is the sustained surface wind
speed.
Wind Speed
(Blank)
Unknown
Short Barb
5 kts
Long Barb
10 kts
≥
37 kts
Table 10-14 Wind Speed Graphics
Gust Offset
(Blank)
Gusts are unknown or < 5 kts above
sustained wind speed.
G10
(Green)
Wind is gusting 5 - 10 kts more than
sustained speed.
G11+
(Yellow)
Wind is gusting 11 kts or more above its
sustained speed.
Table 10-15 Gust Offset Graphics
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