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49 Cards in this Set

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The minimum vertical wind shear value critical for probable moderate or greater turbulence is
6 knots per 1,000 feet
Which statement pertaining to the following Terminal Aerodrome Forecast (TAF) is true?
TAF
KMEM 091135Z 0915 15005KT 5SM HZ BKN060
FM1600 VRB04KT P6SM SKC
SKC in the valid period indicates no significant weather and sky clear.
The most current en route and destination weather information for an instrument flight should be obtained from the
AFSS
What type of Inflight 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?
AITMETs and Center Weather Advisories (CWA)
What weather phenomenon is implied within an area enclosed by small scalloped lines on a U.S. High-Level Significant Weather Prognostic Chart?
Cumulonibus clouds, icing, and moderate or greater turbulence,
Turbulence that is encountered above 15,000 feet AGL not associated with cumuliform cloudiness, including thunderstorms, should be reported as
clear air turbulence.
What is the upper limit of the Low Level Significant Weather Prognostic Chart?
24,000 feet
To best determine observed weather conditions between weather reporting stations, the pilot should refer to
pilot reports
The difference found by subtracting the temperature of a parcel of air theoretically lifted from the surface to 500 millibars and the existing temperature at 500 millibars is called the
lifted index
During preflight preparation, weather report forecasts which are not routinely available at the local service outlet (AFSS) can best be obtained by means of contacting the
weather forecast office (WFD)
Hatching on a Constant Pressure Analysis Chart indicates
windspeed 70 knots to 110 knots
In-Flight Aviation Weather Advisories include what type of information?
forecasts for potentially hazardous conditions for enroute aircraft
En route Flight Advisory Service (EFAS) is a service that provides en route aircraft with timely and meaningful weather advisories pertinent to the type of flight intended, route, and altitude. This information is received by
contacting flight watch, using the name of the ARTCC facility identification in your area, your aircraft identification, the name of nearest VOR, on 122.0 MHz below 17,500 feet MSL
A pilot reporting turbulence that momentarily causes slight, erratic changes in altitude and/or attitude should report it as
light turbulence
What does the contraction VRB in the Terminal Aerodrome Forecast (TAF) mean?
wind direction is variable
What is the meaning of the terms PROB40 2102 +TSRA as used in a Terminal Aerodrome Forecasts (TAF)?
between 2100Z and 0200Z there is a forty percent (40%) probability of thunderstorms with hearvy rain.
The U.S. High-Level Significant Weather Prognostic Chart forecasts significant weather for what airspace?
24,000 feet to 63,000 feet
Which weather chart depicts conditions forecast to exist at a specific time in the future?
12-hour Significant Weather Prognostic Chart
Which chart provides a ready means of locating observed frontal positions and pressure centers?
Surface Analysis Chart
What information is provided by the Radar Summary Chart that is not shown on other weather charts?
lines and cells of hazardous thunderstorms.
Which provides a graphic display of both VFR and IFR weather?
Weather Depiction Chart
From which of the following can the observed temperature, wind, and temperature/ dewpoint spread be determined at a specified altitude?
Constant Pressure Analysis
What significant cloud coverage is reported by this pilot report?
KMOB UA/OV 15NW MOB 1340Z/SK OVC 025/045 OVC 090
the top of the lower overcast is 2,500 feet; base and top of second overcast layer is 4,500 and 9,000 feet, respectively
What is meant by the Special METAR weather observation for KBOI?
SPECI KBOI 091854Z 32005KT 1 1/2SM RA BR OVC007 17/16 A2990 RMK RAB12
rain and mist obstructing visibility; rain began at 1812Z
The Telephone Information Briefing Service (TIBS) provided by AFSS's includes
continuous recording of meteorological and/or aeronautical information available by telephone.
On a Surface Analysis Chart, close spacing of the isobars indicates
strong presure gradient
What flight planning information can a pilot derive from Constant Pressure Analysis Charts?
winds and temperatures aloft
Weather Advisory Broadcasts, including Severe Weather Forecast Alerts (AWW), Convective SIGMETs, and SIGMETs, are provided by
ARTCCs on all frequencies. except emergency, when any part of the area described is within 150 miles of the airspace under their jurisdiction
When turning onto a taxiway from another taxiway, what is the purpose of the taxiway directional sign?
indications designation and direction of taxiway leading out of an intersection
The station originating the following METAR observation has a field elevation of 3,500 feet MSL. If the sky cover is one continuous layer, what is the thickness of the cloud layer? (Top of overcast reported at 7,500 feet MSL).
METAR KHOB 151250Z 17006KT 4SM OVC005 13/11 A2998
3,500 feet
Which is true concerning the radar weather report (SD) for KOKC?
KOKC 1934 LN 8TRW++/+ 86/40 164/60 199/115 15W L2425 MT 570 AT 159/65 2
INCH HAIL RPRTD THIS CELL
the maximum tops of the cells is 57,000 feet 65 NM southeast of the station
Which information section is contained in the Aviation Area Forecast (FA)?
VFR Clouds nd Weather (VFR CLDS/WX)
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.
What wind conditions would you anticipate when squalls are reported at your destination?
Sudden increases in windspeed of at least 16 knots to a sustained speed of 22 knots or more for at least 1 minute
When turbulence causes changes in altitude and/or attitude, but aircraft control remains positive, that should be reported as
moderate
The visibility entry in a Terminal Aerodrome Forecast (TAF) of P6SM implies that the prevailing visibility is expected to be greater than
6 statute miles
On a Surface Analysis Chart, the solid lines that depict sea level pressure patterns are called
isobars
SIGMETs are issued as a warning of weather conditions which are hazardous
to all aircraft
The section of the Aviation Area Forecast (FA) entitled VFR Clouds and Weather contains a summary of
sky condition,cloud heights, visibility, obstructions to vision, precipitation, and sustained surface winds of 20 knots or greater
Terminal Aerodrome Forecasts (TAF) are issued how many times a day and cover what period of time?
four times daily and are usually valid for a 24 hour period
The remarks section of the Aviation Routine Weather Report (METAR) contains the following coded information. What does it mean?
RMK FZDZB42 WSHFT 30 FROPA
wind shift at three zero due to frontal passage
A freezing level panel of the composite moisture stability chart is an analysis of
observed freezing level data from upper air observations
What single reference contains information regarding a volcanic eruption, that is occurring or expected to occur?
In-Flight Weather Advisories
When total sky cover is few or scattered, the height shown on the Weather Depiction Chart is the
base of the lowest layer
What values are used for Winds Aloft Forecasts?
True direction and knots
Which correctly describes the purpose of convective SIGMETs (WST)?
They consist of either an observation and a forecast or just a forecast for tornadoes, significant thunderstorm activity, or hail greater than or equal to 3/4 inch in diameter.
The Hazardous Inflight Weather Advisory Service (HIWAS) is a broadcast service over selected VORs that provides
continuous broadcast of inflight waether advisories.
The Aviation Weather Center (AWC) prepares FAs for the contiguous U.S.
three times each day
Dashed lines on a Surface Analysis Chart, if depicted, indicate that the pressure gradient is
weak