7-10
ENSTROM 480B RFM SUPPLEMENT
Report No. 28-AC-062
Jun 5/14
7-3-6. Cell Movement
The Cell Movement weather product shows the location
and movement of storm cells as identified by the ground-
based system. Cells are represented by yellow squares,
with direction of movement indicated with short, orange
arrows.
7-3-7. SIGMETS and AIRMETS
SIGMET (SIGnificant METeorological Information) and
AIRMET (AIRmen’s METeorological Information) are issued
for potentially hazardous weather. A Convective SIGMET
is issued for hazardous convective weather such as severe
or widespread thunderstorms.
7-3-8. METARS
METARs (METeorological Aerodrome Reports) typically
contain information about the temperature, dewpoint,
wind, precipitation, cloud cover, cloud heights, visibility,
and barometric pressure at an airport or observation
station. They can also contain information on precipitation
amounts, lightning, and other critical data. METARs
reflect hourly observations; non-routine updates include
the code “SPECI” in the report. METARs are shown as
colored flags at airports that provide them.
7-3-9. Surface Analysis and City Forecast
Surface Analysis and City Forecast information is
available for current and forecast weather conditions.
Forecasts are available for intervals of 12, 24, 36, and 48
hours.
7-3-10. Freezing Levels
The Freezing Level weather product shows the color-coded
contour lines for the altitude and location at which the
first isotherm is found. When no data is displayed for a
given altitude, the data for that altitude has not been
received, or is out of date and has been removed from the
display. New data appears when it becomes available.
7-3-11. Winds Aloft
The Winds Aloft weather product shows the forecasted
wind speed and direction at the surface and at selected
altitudes. Altitude can be displayed in 3,000-foot
increments from the surface up to 42,000 feet MSL.
This electronic document is not linked to a subscription for revision control or distribution. Refer to the Optional Equipment
Supplement Publications Status link under the Technical Support Page of the Enstrom Helicopter website for the current revision
level of this Rotorcraft Flight Manual Supplement.
UNCONTROLLED COPY WHEN DOWNLOADED OR PRINTED
