User Guide

Garmin G1000 Pilot’s Guide for Cessna Citation Mustang

190-00494-00 Rev. B6-18

HAZARD AVOIDANCE

METARS AND TAFS

NOTE: The atmospheric pressure on the METAR is reported in hectopascals everywhere but in the US,

where it is reported in inches of mercury. Temperatures are reported in Celsius. Standard temperature and

atmospheric pressure are 15°C (59°F) and 29.92 in Hg (1013.2 hPa).

NOTE: METAR and City Forecast information is only displayed within the installed aviation database service

area.

METAR (METeorological Aerodrome Report) is the standard format for pre-ﬂight weather brieﬁngs. METARs

are updated hourly and are considered current. A typical METAR report contains information about the

temperature, dew point, wind, precipitation, cloud cover, cloud heights, visibility, and barometric pressure. It

can also contain information on precipitation amounts, lightning, and other critical data. METARs are shown

as colored ﬂags at airports that provide them.

By contrast, the TAF (Terminal Aerodrome Report) is the standard format for 24-hour weather forecasts. The

TAF may contain some METAR data, but it generally covers a smaller area. It typically forecasts signiﬁcant

weather changes, temporary changes, probable changes, and expected changes in weather conditions. METAR

and TAF text are displayed on the Weather Data Link Page and the Weather Information Page.

Figure 6-19 METAR Flags on the Weather Data Link Page

Destination Airport

Instructions for

Viewing METAR

and TAF Text