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