Garmin G1000 Pilot's Manual page 317

SFC – pressing the SFC softkey for Surface
Analysis shows current or forecast conditions.
The city forecasts information is combined with
the surface conditions. The SFC softkey label
changes to reflect the forecast time selected.
Forecasts are available for intervals of 12, 24,
36, and 48 hours. The update rate is every 12
minutes.
190-00629-00 Rev. B Garmin G1000 Pilot's Guide for the Beechcraft 58/G58
OPTIONAL EQUIPMENT
FRZ LVL – press the FRZ LVL softkey to display
contour lines for freezing levels. The update
rate is every 12 minutes.
NOTE: When no data is shown at a given altitude
for any of the weather features, the data for that
altitude has not been received or the data is out
of date and has been removed from the display.
Wait for the next update. The update rate is every
12 minutes.
WIND – press the WIND softkey to show wind
speed and direction at a selected altitude from
the ground up to 42,000 feet in 3,000 foot
increments. The WIND softkey label changes
to reflect the winds aloft altitude selected. The
update rate is every 12 minutes.
COUNTY – pressing the COUNTY softkey provides
specific public awareness and protection weather
warnings for Tornado, Severe Thunderstorm,
and Flood conditions provided by the National
Weather Service (NWS). Refer to the Legend for
a description of the county warning icon. The
update rate is every 5 minutes.
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