Garmin GNC 420W Pilots Guide - Page 224

STANDARD AVIATION FORECAST ABBREVIATIONS, METAR, Winds, and Temperature/Dewpoints Age, Graphics

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SECTION 11 ADDITIONAL FEATURES Standard Aviation Forecast Abbreviations The standard aviation forecast abbreviations are listed in Table 11-12. METAR, Winds, and Temperature/Dewpoints Age Graphics STANDARD AVIATION FORECAST ABBREVIATIONS '+' - (Heavy) '-' - (Light) '/' - (Missing or separator) Axxxx - Altimeter setting (xxxx are numbers) AFT - After BKN - Broken clouds BLO - Below BR - Light fog CIG - Ceiling CLR - Sky clear DZ - Drizzle FEW - Few clouds FG - Thick fog FM - From FZ - Freezing G - Gusts KT - Knots OBSCD - Obscured OVC - Overcast clouds Pxxxx - Hourly Precipitation (xxxx are numbers) PRESFR - Pressure falling PRESRR - Pressure rising rapidly rapidly RA - Rain RMK - Remarks SCT - Scattered clouds SLP - Sea Level Pressure SM - Statue Miles SN - Snow TEMPO - Occasionally Trrn - Terrain TS - Thunderstorm VV - Vertical Visibility Table 11-12 Forecast Abbreviations METAR Graphics The age symbols listed in Table 11-13 are common to METARs, Winds, and Temperature/Dewpoint graphics: 0 - 10 11 - 20 21 - 30 31 - 60 61+ Unknown minutes minutes minutes minutes minutes (Yellow) (Green) (Green) (Green) (Green) (Yellow) Table 11-13 Weather Age Graphics METARs Precipitation Graphics Light Moderate (Green) (Green) No Precipitation Rain Heavy (Yellow) Snow Unknown Table 11-14 Precipitation Graphics The symbol in Figure 11-48 indicates the ceiling at KMWM is marginal VFR, with heavy snow and low IFR visibility. The data age is 31-60 minutes old. 11-34 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. K

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GNC 420(A) Pilot’s Guide and Reference
11-34
SECTION 11
ADDITIONAL FEATURES
190-00140-20
Rev. K
Standard Aviation Forecast Abbreviations
The standard aviation forecast abbreviations are listed
in Table 11-12.
STANDARD AVIATION FORECAST ABBREVIATIONS
‘+’ – (Heavy)
‘-’ – (Light)
‘/’ – (Missing or separator)
Axxxx – Altimeter setting
(xxxx are numbers)
AFT – After
BKN – Broken clouds
BLO – Below
BR – Light fog
CIG – Ceiling
CLR – Sky clear
DZ – Drizzle
FEW – Few clouds
FG – Thick fog
FM – From
FZ – Freezing
G – Gusts
KT – Knots
OBSCD – Obscured
OVC – Overcast clouds
Pxxxx – Hourly Precipitation
(xxxx are numbers)
PRESFR – Pressure falling
rapidly
PRESRR – Pressure rising
rapidly
RA – Rain
RMK – Remarks
SCT – Scattered clouds
SLP – Sea Level Pressure
SM – Statue Miles
SN – Snow
TEMPO – Occasionally
Trrn – Terrain
TS – Thunderstorm
VV – Vertical Visibility
Table 11-12
Forecast Abbreviations
METAR Graphics
The age symbols listed in Table 11-13 are common to
METARs, Winds, and Temperature/Dewpoint graphics:
METAR, Winds, and Temperature/Dewpoints Age
Graphics
0 - 10
minutes
(Green)
11 - 20
minutes
(Green)
21 - 30
minutes
(Green)
31 - 60
minutes
(Green)
61+
minutes
(Yellow)
Unknown
(Yellow)
Table 11-13
Weather Age Graphics
METARs
Precipitation Graphics
Light
(Green)
Moderate
(Green)
Heavy
(Yellow)
No
Precipitation
Rain
Snow
Unknown
Table 11-14 Precipitation Graphics
The symbol in Figure 11-48 indicates the ceiling at
KMWM is marginal VFR, with heavy snow and low IFR
visibility.
The data age is 31-60 minutes old.