CFI Aviation Weather

Question 1 of 136

1. Question

Which is the primary driving force of weather on the Earth?

The Sun.
Coriolis.
Rotation of the Earth.

Question 2 of 136

2. Question

What causes wind?

Coriolis force.
Pressure differences.
The rotation of the Earth

Question 3 of 136

3. Question

Winds at 5,000 feet AGL on a particular flight are southwesterly while most of the surface winds are southerly. This difference in directions primarily due to

local terrain effects on pressure.
stronger Coriolis force at the surface.
friction between the wind and the surface

Question 4 of 136

4. Question

In what part of the atmosphere does most weather occur?

Tropopause.
Troposphere.
Stratosphere

Question 5 of 136

5. Question

The general circulation of air associated with a high-pressure area in the Northern Hemisphere is

inward, upward, and clockwise.
outward, downward, and clockwise.
outward, upward, and counterclockwise

Question 6 of 136

6. Question

When flying from a high- to a low-pressure area in the Northern Hemisphere, the wind direction and velocity will be from the

left and increasing.
left and decreasing.
right and increasing.

Question 7 of 136

7. Question

The windflow around a low pressure is

cyclonic.
adiabatic.
anticyclonic

Question 8 of 136

8. Question

In the Northern Hemisphere, a pilot making a long distance flight from east to west would most likely find favorable winds associated with high- and low pressure systems by flying to the

north of a high and a low.
north of a high and to the south of a low.
south of a high and to the north of a low

Question 9 of 136

9. Question

Which is true regarding the development of convective circulation?

Cool air must sink to force the warm air upward.
Warm air is less dense and rises on its own accord.
Cool air surrounding convective circulation sinks at a greater rate than the warmer air rises (within the thermal), thus forcing the warmer air upward.

Question 10 of 136

10. Question

Convective circulation patterns associated with sea breezes are caused by

land absorbing and radiating heat faster than the water.
warm and less dense air moving inland from over the water, causing it to rise.
cool and less dense air moving inland from over the water, causing it to rise.

Question 11 of 136

11. Question

Select the true statement concerning thermals

Strong thermals have proportionately increased sink in the air between them.
Thermals will not develop unless the Sun's rays strike the Earth at a vertical angle.
A thermal invariably remains directly above the surface area from which it developed.

Question 12 of 136

12. Question

Which statement is true regarding high- or low pressure systems?

A high-pressure area or ridge is an area of rising air.
A low-pressure area or trough is an area of rising air.
A high-pressure area is a trough of descending air.

Question 13 of 136

13. Question

The ratio of the existing water vapor in the air, as compared to the maximum amount that could exist at a given temperature, is called

the dewpoint.
saturation point.
relative humidity.

Question 14 of 136

14. Question

Which is an operational consideration regarding actual air temperature and dewpoint temperature spread?

The temperature spread decreases as the relative humidity decreases.
The temperature spread decreases as the relative humidity increases.
The temperature spread increases as the relative humidity increases.

Question 15 of 136

15. Question

One condition necessary for the formation of fog is

calm air.
visible moisture.
high relative humidity.

Question 16 of 136

16. Question

Fog associated with a warm front is a result of saturation due to

nocturnal cooling.
evaporation of precipitation.
evaporation of surface moisture

Question 17 of 136

17. Question

You may anticipate fog when the temperature dew point spread is

15°F or less and decreasing.
15°F or more and increasing.
5°F or less and decreasing.

Question 18 of 136

18. Question

What is the process by which ice can form on a surface directly from water vapor on a cold, clear night?

Sublimation.
Condensation.
Supersaturation.

Question 19 of 136

19. Question

Radiation fog is most likely to occur under what conditions?

Warm, moist air being forced upslope by light winds resulting in the air being cooled and condensed.
High humidity during the early evening, cool cloudless night with light winds, and favorable topography.
Low temperature/dewpoint spread, calm wind conditions, the presence of hydroscopic nuclei, low overcast, and favorable topography.

Question 20 of 136

20. Question

Advection fog is formed as a result of

moist air moving over a colder surface.
the addition of moisture to a mass of cold air as it moves over a body of water.
the ground cooling adjacent air to the dewpoint temperature on clear, calm nights

Question 21 of 136

21. Question

With respect to advection fog, which statement is true?

It forms almost exclusively at night or near daybreak.
It forms when unstable air is cooled adiabatically.
It can appear suddenly during day or night, and it is more persistent than radiation fog.

Question 22 of 136

22. Question

Which in-flight hazard is most commonly associated with warm fronts

Ground fog.
Advection fog.
Precipitation-induced fog.

Question 23 of 136

23. Question

When warm air moves over a cold lake, what weather phenomenon is likely to occur on the leeward side of the lake?

Fog.
Showers.
Cloudiness

Question 24 of 136

24. Question

What are the standard temperature and pressure values for mean sea level?

15°F and 29.92" Hg. B.
59°C and 29.92 mb.
59°F and 1013.2 mb.

Question 25 of 136

25. Question

If the air temperature is +6°C at an elevation of 700 feet and a standard (average) temperature lapse rate exists, what will be the approximate freezing level?

6,700 feet MSL.
3,700 feet MSL.
2,700 feet MSL.

Question 26 of 136

26. Question

freezing level?

7,250 feet MSL.
5,250 feet MSL.
4,250 feet MSL.

Question 27 of 136

27. Question

The most frequent type of ground- or surface based temperature inversion is that produced by

A. terrestrial radiation on a clear, relatively still night.
warm air being lifted rapidly aloft in the vicinity of mountainous terrain.
the movement of colder air under warm air or the movement of warm air over cold air.

Question 28 of 136

28. Question

Which weather conditions should be expected beneath a low-level temperature inversion layer when the relative humidity is high?

Light wind shear and poor visibility due to light rain.
Smooth air and poor visibility due to fog, haze, or low clouds.
Turbulent air and poor visibility due to fog, low stratus type clouds, and showery precipitation.

Question 29 of 136

29. Question

At approximately what altitude above the surface would you expect the base of cumuliform clouds if the surface air temperature is 77°F and the dewpoint is 53°F?

9,600 feet AGL.
8,000 feet AGL.
5,500 feet AGL.

Question 30 of 136

30. Question

At approximately what altitude above the surface would you expect the base of cumuliform clouds if the surface air temperature is 33°C and the dewpoint is 15°C dewpoint is 15°C?

4,100 feet AGL.
6,000 feet AGL.
7,200 feet AGL

Question 31 of 136

31. Question

The average lapse rate in the troposphere is

2.0°c per 1,000 feet.
3.0°c per 1,000 feet.
5.4°C per 1,000 feet.

Question 32 of 136

32. Question

From which measurement of the atmosphere can stability be determined?

Ambient lapse rate.
Atmospheric pressure.
Difference between standard temperature and surface temperature.

Question 33 of 136

33. Question

What is a characteristic of stable air?

Excellent visibility.
Restricted visibility.
Showery-type precipitation.

Question 34 of 136

34. Question

What is a typical characteristic of a stable air mass?

Cumuliform clouds.
Showery precipitation.
Continuous precipitation.

Question 35 of 136

35. Question

A moist, warm air mass that is being cooled from below is characterized, in part, by

smooth air.
cumuliform clouds.
showers and thunderstorms.

Question 36 of 136

36. Question

A moist, cold air mass that is being warmed from below is characterized, in part, by

fog and drizzle.
showers and thunderstorms.
continuous heavy precipitation.

Question 37 of 136

37. Question

Cool air moving over a warm surface is generally characterized by

instability and showers.
stability, fog, and drizzle.
instability and continuous precipitation.

Question 38 of 136

38. Question

Consider the following air mass characteristics:

Cumuliform clouds.
Stable lapse rate.
Unstable lapse rate.
Stratiform clouds and fog.
Smooth air (above the friction level) and poor visibility.
Turbulence up to about 10,000 feet and good visibility except in areas of precipitation.

A moist air mass, which is colder than the surface over which it passes, frequently has which of the above characteristics?

1, 3, and 6.
3, 4, and 5.
2, 4, and 5.

Question 39 of 136

39. Question

The weather condition normally associated with unstable air is

stratiform clouds.
fair to poor visibility.
good visibility.

Question 40 of 136

40. Question

A moist, unstable air mass is characterized by

poor visibility and smooth air.
cumuliform clouds and showery precipitation.
stratiform clouds and continuous precipitation.

Question 41 of 136

41. Question

What type weather can one expect from moist, unstable air and very warm surface temperature?

Fog and low stratus clouds.
Continuous heavy precipitation.
Strong updrafts and cumulonimbus clouds.

Question 42 of 136

42. Question

If clouds form as a result of very stable, moist air being forced to ascend a mountain slope, the clouds will be

cirrus type with no vertical development or turbulence.
cumulonimbus with considerable vertical development and heavy rains.
stratus type with little vertical development and little or no turbulence.

Question 43 of 136

43. Question

The formation of either predominantly stratiform or predominantly cumuliform clouds is dependent upon the

source of lift.
stability of the air being lifted.
percent of moisture content of the air being lifted.

Question 44 of 136

44. Question

Convective SIGMETs are issued for which weather conditions?

Any thunderstorm with a severity level of VIP 2 or more.
Cumulonimbus clouds with tops above the tropopause and thunderstorms with 1/2-inch hail or funnel clouds.
Embedded thunderstorms, lines of thunderstorms, and thunderstorms with 3/4 inch hail or tornadoes.

Question 45 of 136

45. Question

A surface inversion can

indicate the chance of gusty winds.
produce poor visibility.
mean an unstable air mass.

Question 46 of 136

46. Question

An increase in temperature with an altitude increase

is indication of an inversion.
denotes the beginning of the stratosphere.
means a cold front passage.

Question 47 of 136

47. Question

Frontal waves normally form on

stationary or occluded fronts.
slow-moving warm fronts or occluded fronts.
slow-moving cold fronts or stationary fronts.

Question 48 of 136

48. Question

If a wave were to form on a stationary front running east and west across the United States, that portion east of the wave would normally

remain stationary with that portion west of the wave becoming a cold front.
become a warm front and that portion west of the wave would become a cold front.
become a cold front and that portion west of the wave would become a warm front.

Question 49 of 136

49. Question

What type weather is associated with an advancing warm front that has moist, unstable air?

Stratiform clouds, lightning, steady precipitation.
Cumuliform clouds, smooth air, steady precipitation.
Cumuliform clouds, turbulent air, showery-type precipitation.

Question 50 of 136

50. Question

Which statement is true regarding a cold front occlusion?

The air ahead of the warm front is warmer than the air behind the overtaking cold front.
The air ahead of the warm front has the same temperature as the air behind the overtaking cold front.
The air between the warm front and cold front is colder than either the air ahead of the warm front or the air behind the overtaking cold front.

Question 51 of 136

51. Question

Consider the following statements about mountain waves:

Mountain waves always develop in a series on the upwind (windward) side of mountain ridges.
In a mountain wave, the air dips sharply downward immediately to the lee side of a ridge, before rising and falling in a wave motion for a considerable distance downstream.
If the air is humid and the wave is of large amplitude, lenticular (lens-shaped) clouds mark the wave’s crest.
In a typical wave, the greatest amplitude is seldom more than 1,000 feet above the ridge crest elevation.
From the statements above, select those that are true.

2 and 3.
1, 2, and 3.
1, 3, and 4.

Question 52 of 136

52. Question

One of the most dangerous features of mountain waves is the turbulent areas in and

below rotor clouds.
above rotor clouds.
below lenticular clouds.

Question 53 of 136

53. Question

When flying low over hilly terrain, ridges, or mountain ranges, the greatest potential danger from turbulent air currents will usually be encountered on the

leeward side when flying with the wind.
leeward side when flying into the wind.
windward side when flying into the wind.

Question 54 of 136

54. Question

The conditions most favorable to wave formation over mountainous areas are a layer of

unstable air at mountaintop altitude and a wind of at least 15 to 25 knots blowing across the ridge.
stable air at mountaintop altitude and a wind of at least 15 to 25 knots blowing across the ridge.
moist, unstable air at mountaintop altitude and a wind of less than 5 knots blowing across the ridge.

Question 55 of 136

55. Question

Low-level wind shear, which results in a sudden change of wind direction, may occur

after a warm front has passed.
when surface winds are light and variable.
when there is a low-level temperature inversion with strong winds above the inversion.

Question 56 of 136

56. Question

Which condition could be expected if a strong temperature inversion exists near the surface?

Strong, steady downdrafts and an increase in OAT.
A wind shear with the possibility of a sudden loss of airspeed.
An OAT increase or decrease with a constant wind condition.

Question 57 of 136

57. Question

In reference to clear air turbulence (CAT), areas to be avoided are those where horizontal wind shear exceeds

40 knots per 150 miles.
10 knots per 50 miles.
6 knots per 1,000 feet.

Question 58 of 136

58. Question

What are the minimum requirements for the formation of a thunderstorm?

Sufficient moisture and a lifting action.
Sufficient moisture, an unstable lapse rate, and lifting action.
Towering cumulus clouds, sufficient moisture, and a frontal zone.

Question 59 of 136

59. Question

Select the true statement pertaining to the life cycle of a thunderstorm.

The initial stage of a thunderstorm is always indicated by the development of a nimbus cloud.
The beginning of rain at the Earth's surface indicates the mature stage of the thunderstorm.
The beginning of rain at the Earth's surface indicates the dissipating stage of the thunderstorm.

Question 60 of 136

60. Question

What feature is associated with the cumulus stage of a thunderstorm?

Frequent lightning.
Continuous updrafts.
Beginning of rain at the surface.

Question 61 of 136

61. Question

A squall line is usually associated with a

stationary front.
fast-moving cold front.
fast-moving warm front.

Question 62 of 136

62. Question

Which type of cloud is associated with violent turbulence and a tendency toward the production of funnel clouds?

Cumulonimbus mamma.
Standing lenticular.
Altocumulus castellanus.

Question 63 of 136

63. Question

Tornadoes are most likely to occur with which type of thunderstorms?

Tropical thunderstorms during the mature stage.
Squall line thunderstorms that form ahead of warm fronts.
Steady-state thunderstorms associated with cold fronts or squall lines.

Question 64 of 136

64. Question

What is the expected duration of an individual microburst?

One microburst may continue for as long as an hour.
Five minutes with maximum winds lasting approximately 2 to 4 minutes.
Seldom longer than 15 minutes from the time the burst strikes the ground until dissipation.

Question 65 of 136

65. Question

Maximum downdrafts in a microburst encounter may be as strong as

6,000 feet per minute.
4,500 feet per minute.
1,500 feet per minute.

Question 66 of 136

66. Question

How long do the maximum intensity winds last in an individual microburst?

2 to 4 minutes.
5 to 10 minutes.
15 minutes.

Question 67 of 136

67. Question

Which situation would most likely result in freezing rain?

Rain falling from air which has a temperature of more than 0°C into air having a temperature of 0°C or less.
Rain falling from air which has a temperature of 0°C or less into air having a temperature of more than 0°C.
Rain which has a supercooled temperature of 0°C or less falling into air having a temperature of more than 0°c .

Question 68 of 136

68. Question

Consider the following statements regarding hail as an in-flight hazard and select those which are correct.

There is a correlation between the visual appearance of thunderstorms and the amount of hail within them.
Large hail is most commonly found in thunderstorms which have strong updrafts and large liquid water content.
Hail may be found at any level within a thunderstorm but not in the clear air outside of the storm cloud.
Hail is usually produced during the mature stage of the thunderstorm’s lifespan.
Hailstones may be thrown upward and outward from a storm cloud for several miles.
The true statements are:

2, 4, and 5.
1, 2, and 3.
1, 2, 4, and 5.

Question 69 of 136

69. Question

Which statement is true concerning the in-flight hazard of hail?

Hail is usually produced by altocumulus clouds.
Rain at the surface indicates the absence of hail aloft.
Hailstones may be thrown outward from a storm cloud for several miles.

Question 70 of 136

70. Question

Hail, an in-flight hazard, is most likely to be associated with

cumulus clouds.
stratocumulus clouds.
cumulonimbus clouds.

Question 71 of 136

71. Question

Hail will most likely be encountered

beneath the anvil cloud of a large cumulonimbus.
during the dissipating stage of the cumulonimbus.
above the cumulonimbus cloud well above the freezing level.

Question 72 of 136

72. Question

Which precipitation type usually indicates freezing rain at higher altitudes?

Snow.
Hail.
Ice pellets.

Question 73 of 136

73. Question

The most rapid accumulation of clear ice on an aircraft in flight may occur with temperatures between 0°C to – 15°C in

cumuliform clouds.
stratiform clouds.
any clouds or dry snow.

Question 74 of 136

74. Question

Which is an operational consideration regarding aircraft structural icing?

It is unnecessary for an aircraft to fly through rain or cloud droplets for structural ice to form.
Clear ice is most likely to form on an airplane when flying through stratified clouds or light drizzle.
In order for structural ice to form, the temperature at the point where moisture strikes the aircraft must be 0°C (32°F) or colder.

Question 75 of 136

75. Question

A generally recommended practice for autopilot usage during cruise flight in icing conditions is

keeping the autopilot engaged while monitoring the system.
periodically disengaging the autopilot and hand flying the airplane.
periodically disengaging and immediately reengaging the altitude hold function.

Question 76 of 136

76. Question

The height of the bases of the middle clouds in the middle latitudes ranges from

1,000 to 10,000 feet.
6,500 to 23,000 feet.
16,500 to 45,000 feet.

Question 77 of 136

77. Question

Which middle level clouds are characterized by rain, snow, or ice pellets posing a serious icing problem if temperatures are near or below freezing?

Nimbostratus.
Altostratus lenticular.
Altocumulus castellanus.

Question 78 of 136

78. Question

One of the best visual indications of a thermal is a

smooth cumulus cloud with a concave base.
broken to overcast sky with cumulus clouds.
fragmented cumulus cloud with a concave base.

Question 79 of 136

79. Question

Streamers of precipitation trailing beneath clouds but evaporating before reaching the ground are known as

virga.
sublimation.
evaporation.

Question 80 of 136

80. Question

Refer to the diagram below. Which station is reporting the lowest ceiling?

KAMA.
KFTW.
KDAL.

Question 81 of 136

81. Question

Refer to the diagram below. Which station is reporting the wind as calm?

KDAL.
KFTW.
KTYR

Question 82 of 136

82. Question

Refer to the diagram below. In the report for KBRO, what is the reported ceiling?

2,000 feet.
13,000 feet.
25,000 feet.

Question 83 of 136

83. Question

Refer to the diagram below. The temperature/dewpoint spread at KAUS is

4°C.
4°F.
7°C.

Question 84 of 136

84. Question

Refer to the diagram below. What is the reported duration of the rain at the time of the observation at KAUS?

25 minutes.
26 minutes.
36 minutes.

Question 85 of 136

85. Question

Refer to the diagram below. What is the reported duration of the rain at the time of the observation at KBRO?

25 minutes.
6 minutes.
19 minutes.

Question 86 of 136

86. Question

GIVEN: METAR KOUN 1513552 AUTO 22010KT 10SM CLR BLO 120 13/10 A2993 RMK A02 $. The ASOS report indicates that the location is

reporting a temperature of 45°F.
possibly in need of maintenance.
augmented with a weather observer.

Question 87 of 136

87. Question

Consider the following statements regarding an Aviation Routine Weather Report (METAR).

A vertical visibility entry does not constitute a ceiling.
Fog (FG) can be reported only if the visibility is less than 5/8 mile.
The ceiling layer will be designated by a “C.”
Mist (BR) can be reported only if the visibility is 5/8 mile up to six miles.
Temperatures reported below zero will be prefixed with a”-.”
There is no provision to report partial obscurations.

Select the true statements.

2, 4, and 6.
2, 3, and 5.
1, 2, 5, and 6.

Question 88 of 136

88. Question

Which statement is true concerning ASOS/AWOS weather reporting systems?

Each AWOS station is part of a nationwide network of weather reporting stations.
ASOS locations perform weather observing functions necessary to generate METAR reports.
Both ASOS and AWOS have the capability of reporting density altitude, as long as it exceeds the airport elevation by more than 1,000 feet.

Question 89 of 136

89. Question

GIVEN: METAR KPNC 131215 AUTO 33025KT 1/2SM OVC005 OO/M03 A2990 RMK A02 SLPNO

This ASOS report indicates that the

temperature is missing.
station reports every 15 minutes.
sea level pressure is not available.

Question 90 of 136

90. Question

The base and tops of the overcast layer reported by a pilot are

1,800 feet MSL and 5,500 feet MSL.
5,500 feet AGL and 7,200 feet MSL.
7,200 feet MSL and 8,900 feet MSL.

Question 91 of 136

91. Question

Refer to the diagram below. The wind and temperature at 12,000 feet MSL as reported by a pilot are

A. 090° at 21 knots and -9° . Answer (A) is incorrect. The wind is reported as 080° at 21 kt. (WV 08021), not 090° at 21 kt., and the temperature is
090° at 21 MPH and -9° F.
080° at 21 knots and -7° C.

Question 92 of 136

92. Question

Refer to the diagram below. The intensity of the turbulence reported at a specific altitude is

moderate from 5,500 feet to 7,200 feet.
moderate at 5,500 feet and at 7,200 feet.
light from 5,500 feet to 7,200 feet.

Question 93 of 136

93. Question

Refer to the diagram below. If the terrain elevation is 1,295 feet MSL, what is the height above ground level of the base of the ceiling?

505 feet AGL.
6,586 feet AGL.
1,295 feet AGL.

Question 94 of 136

94. Question

Consider the following statements regarding a Pilot Weather Report (PIREP).

A vertical visibility entry does not constitute a ceiling.
Fog (FG) can be reported only if the visibility is less than 5/8 mile.
The ceiling layer will be designated by a “C.”
Mist (BR) can be reported only if the visibility is greater than or equal to 5/8 statute mile.
Temperatures reported below zero will be prefixed with a “- .”
There is no provision to report partial obscurations.

Select the true statements.

2, 4, and 6.
2, 3, and 5.
1, 2, 5, and 6.

Question 95 of 136

95. Question

Interpret the following radar weather report:

LIT 1133 AREA 4TRW 22/100 88/170 196/180 220/115 C2425 MT 310 AT 162/110

There are four cells with tops at 10,000 feet, 17,000 feet, and 11,500 feet.
The maximum top of the cells is located 162° and 110 NM from the station (LIT).
The visibility is 4 miles in thunderstorms and the intensity of thunderstorms remains unchanged

Question 96 of 136

96. Question

Which statement is true concerning this radar weather report for OKC?

OKC 1934 LN 8TRW / 86/ 40 164/60 199/115 15W 2425MT 570 AT 159/65 2 INCH HAIL RPRTD THIS ECHO.

The visibility is 8 miles in rain showers.
There are three cells with tops at 11,500, 40,000, and 60,000 feet.
The maximum top of the cells is 57,000 feet located 65 NM south-southeast of the station.

Question 97 of 136

97. Question

The intensity trend of a front (as of chart time) is best determined by referring to a

Surface Analysis Chart.
Prognostic Chart.
Weather Depiction Chart

Question 98 of 136

98. Question

On a Surface Analysis Weather Chart, isobars are usually spaced at intervals of

4 millibars.
2 millibars.
6 millibars.

Question 99 of 136

99. Question

The strength and position of a front (as of chart time) is best determined by referring to a

Surface Analysis Chart.
Prognostic Chart.
Weather Depiction Chart.

Question 100 of 136

100. Question

Refer to the diagram below. Which symbol is used when there is a change in the front type?

1
5
8

Question 101 of 136

101. Question

Refer to the diagram below. Refer to illustration 12. What does this symbol mean on a Surface Analysis Weather Chart?

Squall line.
Occluded front.
High-pressure ridge.

Question 102 of 136

102. Question

Refer to the diagram below. What type of front is show in illustration 4?

Cold frontolysis.
Warm frontolysis.
Occluded frontolysis.

Question 103 of 136

103. Question

Refer to the diagram below. Which illustration indicates a tropical wave?

7
8
9

Question 104 of 136

104. Question

Refer to the diagram below. Which symbol used on a Surface Analysis Weather Chart represents a dissipating warm front?

1
2
3

Question 105 of 136

105. Question

Refer to the diagram below. After determining your route of flight will take you through area L, you will most likely find which of the following weather conditions?

Marginal VFR.
VFR.
IFR.

Question 106 of 136

106. Question

Refer to the diagram below. After determining your destination is in the vicinity of area J, you should review which of the following weather products next?

Winds and Temperatures Aloft Forecast (FB).
The Weather Channel.
METAR.

Question 107 of 136

107. Question

Refer to the diagram below. After determining your route of flight will take you through area E, you will most likely find which of the following weather conditions?

IFR.
VFR.
LIFR.

Question 108 of 136

108. Question

When using a Constant Pressure Analysis Chart for planning a flight at 10,000 feet MSL, a pilot should refer to the

850-millibar analysis.
700-millibar analysis.
500-millibar analysis.

Question 109 of 136

109. Question

From which of the following can the observed temperature, wind, and temperature/dewpoint spread be determined at specified flight levels?

Stability Charts.
Winds Aloft Forecasts.
Constant Pressure Charts.

Question 110 of 136

110. Question

Refer to the diagram below. For a flight between Denver, CO, and Las Vegas, NV, you should expect the following turbulent conditions:

None.
Light.
Moderate or greater.

Question 111 of 136

111. Question

Refer to the diagram below. After analyzing your flight path through northwestern Illinois and eastern Iowa, you should continue your flight planning by examining

AIRMET.
SIGMET.
PIREP.

Question 112 of 136

112. Question

Which weather chart depicts the conditions forecast to exist at a specific time in the future?

Prognostic.
Surface Analysis.
Weather Depiction.

Question 113 of 136

113. Question

Refer to the diagram below. What do the blue colored semi-circular polygons located southeast of each cell indicate?

The distance between the hazard fields.
The location of the hazard field at the last report.
The forecast of where the hazard field will be in 1 hour.

Question 114 of 136

114. Question

Refer to the diagram below. At what speed is the most southern hazard field moving?

45 kts.
25 kts.
45 mph.

Question 115 of 136

115. Question

Refer to the diagram below. What direction are the hazard fields moving?

Northwest.
Southeast.
Cannot determine without movement arrows.

Question 116 of 136

116. Question

Refer to the diagram below. What wind is forecast for STL at 9,000 feet?

230° true at 32 knots.
230° magnetic at 25 knots.
230° true at 25 knots.

Question 117 of 136

117. Question

Refer to the diagram below. Determine the wind and temperature aloft forecast for DEN at 9,000 feet

230° true at 53 knots, temperature -47°C.
230° magnetic at 53 knots, temperature 47°C.
230° true at 21 knots, temperature -4°C

Question 118 of 136

118. Question

Refer to the diagram below. Determine the wind and temperature aloft forecast for MKC at 6,000 feet

050° true at 7 knots, temperature missing.
200° true at 6 knots, temperature +3°C.
200° magnetic at 6 knots, temperature +3°C.

Question 119 of 136

119. Question

Which primary source should be used to obtain forecast weather information at your destination for the planned ETA?

Winds Aloft Chart.
Weather Depiction Charts.
Terminal Aerodrome Forecast {TAF).

Question 120 of 136

120. Question

Refer to the diagram below. In the TAF for KMCO, what does “SHRA” stand for?

KMCO 021136Z 0212/0312 22005KT P6SM VCSH FEW026 FEW045 SCT180 TEMPO 0212/0214 3SM SHRA BKN020 OVC040 FM021400 27009KT P6SM VCTS SCT020CB BKN035 OVC050 TEMPO 0214/0217 2SM TSRA BKN015CBOVC030 FM021800 34009KT P6SM SCT025 BKN060 FM02210004010KT P6SM SCT040 BKN080 FM030000 09008KT P6SM SCT040 BKN120

Rain showers.
A shift in wind direction is expected.
A significant change in precipitation is possible.

Question 121 of 136

121. Question

Refer to the diagram below. What is the valid period for the TAF for KMEM?

1800Z to 1800Z.
120oz to 180oz.
120oz to 120oz

Question 122 of 136

122. Question

Refer to the diagram below. In between 1000Z and 120oz the visibility at KMEM is forecast to be

6 statute miles.
1/2 statute mile.
3 statute miles.

Question 123 of 136

123. Question

Refer to the diagram below. In the TAF from KOKC, the clear sky becomes

overcast at 200 feet with the probability of becoming 400 feet overcast during the forecast period between 220oz and 2400Z.
overcast at 2,000 feet during the forecast period between 220oz and 2400Z.
overcast at 200 feet with a 40% probability of becoming overcast at 600 feet during the forecast period between 2200Z and 2400Z

Question 124 of 136

124. Question

Vertical visibility is shown on Terminal Aerodrome Forecasts (TAF) reports when the sky is

overcast.
obscured.
partially obscured.

Question 125 of 136

125. Question

When the visibility is greater than 6 SM on a TAF it is expressed as

6PSM.
P6SM.
6SMP.

Question 126 of 136

126. Question

What is the wind shear forecast in the following TAF?
TAF
KCVG 231051Z 231212 12012KT 4SM – RA BR OVC008
WS005/27050KT TEMPO 1719 1/2SM – RA FG FM1930 09012KT 1SM- DZ BR W003 BECMG
2021 5SM HZ=

A. 5 feet AGL from 270° at 50 KT. 5 feet AGL from 270° at 50 KT.
50 feet AGL from 270° at 50 KT.
500 feet AGL from 270° at 50 KT.

Question 127 of 136

127. Question

Refer to the diagram below. The bottom panel on this Convective Outlook Chart indicates

areas of AIRMETs and SIGMETs.
general thunderstorm activity.
forecast severe thunderstorm areas.

Question 128 of 136

128. Question

Refer to the diagram below. What percent coverage of severe thunderstorms is forecast to occur in the area of moderate risk in the north-central United States?
|

6 to 10
10 to 50
50 to 90

Question 129 of 136

129. Question

Refer to the diagram below. Regarding Convective Outlook Charts, when well-organized severe thunderstorms are expected, but in small numbers and/or low coverage, the risk is referred to as

POSSIBLE.
MDT.
SLGT.

Question 130 of 136

130. Question

If an area on a Convective Outlook Chart is labeled APCHG, this indicates

possible tornadoes.
thunderstorm activity may approach extreme intensity.
winds greater than or equal to 35 knots but less than 50 knots.

Question 131 of 136

131. Question

To determine the freezing level and areas of probable icing aloft, you should refer to

an Area Forecast.
an AIRMET or SIGMET.
a Weather Depiction Chart

Question 132 of 136

132. Question

What information is contained in a CONVECTIVE SIGMET in the conterminous United States?

Moderate thunderstorms and surface winds greater than 40 knots.
Tornadoes, embedded thunderstorms, and hail 3/4 inch or greater in diameter.
Severe icing, severe turbulence, or widespread dust storms lowering visibility to less than 3 miles.

Question 133 of 136

133. Question

What information would be covered in an

Severe turbulence.
Extensive mountain obscurement.
Hail of 3/4 inch or greater diameter.

Question 134 of 136

134. Question

Which in-flight advisory would contain information on severe icing?

PIREP.
SIGMET.
CONVECTIVE SIGMET

Question 135 of 136

135. Question

Refer to the diagram below. For a flight between San Francisco, CA, and Seattle, WA, you should expect icing to accumulate to 1/4 inch thickness within:

1 hour.
between 15 minutes and 1 hour.
less than 15 minutes

Question 136 of 136

136. Question

Refer to the diagram below. After identifying areas of potential icing, you should review which of the following weather products?

AIRMETs.
TAF.
METAR.