Weather 3 Flashcards
The bringing of rain indicates _______ stage of the thunderstorm
mature
What minimum distance should exist between intense radar echoes before any attempt is made
to fly between these thunderstorms?
40 miles
Airborne weather avoidance radar is, as its name implies, for avoiding ________ - not for penetrating it.
severe weather
Which in-flight hazard is most commonly associated with warm fronts?
Precipitation-induced fog .
TRUE/FALSE The Radarscope provides no assurance of avoiding instrument weather conditions
TRUE
Advection fog has drifted over a coastal airport during the day. What may tend to dissipate or
lift this fog into low stratus clouds?
Wind 15 knots or stronger
Advection fog above a speed of 15 knots,clouds
the fog usually lifts and forms low stratus
TRUE/FALSe Advection fog can appear suddenly during day or night and it is more persistent then radiation fog
TRUE
A common location of clear air turbulence is
in an upper trough on the polar side of a jet stream
The jet stream and associated clear air turbulence can sometimes be visually identified in flight by
long streaks of cirrus clouds
During the winter months in the middle latitudes, the jet stream shifts toward the
south and speed increases.
jet streams are the strongest for both the _________________ Hemisphere winters.
Northern and Southern
When flying klw over hilly terrain, ridges, or mountain ranges, the greatest potential danger
from turbulent air currents will usually be encountered on the
downwind side when flying into the wind
Terminal Aerodrome Forecasts (TAF) are issued how many times a day and cover what period
ot time?
Four times daily and are usually valid for a 24 hour period
Which in formation section is contained in the Aviation Area Forecast (FA)?
VFR Clouds and Weather (VFR CLDS,WX).
The section of the Aviation Area Forecast (FA) entitled VFR Clouds and Weather contains a
summary of
1) sky condition,
2) cloud heights,
3) visibility,
4) obstructions to vision,
5) precipitation,
6) sustained
surface winds of 20 knots or greater
7.1.6 Area Forecast Format - Conterminous U.S. (CONUS)
Question: 431
In-Flight Aviation Weather Advisories include what type of information?
Forecasts Of potential hazardous flying conditions for enroute aircraft
What type of Inf light Weather Advisories provides an en route pilot with information regarding
the possibility of moderate icing, moderate turbulence, winds of 30 knots or more at the
surface and extensive mountain obscurement?
AIRMETs and center weather advisories (CWA)
AIRMET Sierra
IFR conditions and/or extensive mountain obscurations.
AIRMET Tango
moderate turbulence, sustained surface winds of 30 knots or greater, and/or
non convective low-level wind shear.
AIRMET Zulu
describes moderate icing and provides freezing level heights.
are issued on a scheduled basis every __________ beginning at 0245 UTC
6 hours
single reference contains information regarding expected volcanic eruption?
In-Flight Weather Advisories
The Aviation Weather< Center< (AWC) prepares FA’s for the contiguous U.S.
three times each day.
Which forecast provides specific information concerning expected sky cover, cloud tops, visibility, weather and obstructions to vision in a route format
Area Forecast
Dashed lines on a Surface Analysis Chart, if depicted, indicate that the pressure gradient is
weak
On & Surface Analysis Chart, close spacing of the isobars indicates
strong pressure gradient
The Surface Analysis Chart depicts
actual frontal positions, pressure patterns, temperature, dewpoint, wind, weather, and
obstructions to vision at the valid time of the chart.
Which provides a graphic display of both VFR and IFR weather?
Weather Depiction Chart.
