Meteorology Flashcards (2022)

Term

A common type of ground or surface based temperature inversion is that which is produced by

Definition

Ground radiation on clear, cool nights when the wind is light.

AW

Term

The primary cause of all changes in the Earth's weather is

Definition

Variation of solar energy received by the Earth's regions.

AW

Term

A characteristic of the stratosphere is

Definition

Relatively small changes in temperature with an increase in altitude.

AW

Term

Steady precipitation, in contrast to shower, preceding a front is an indication of

Definition

Stratiform clouds with little or no turbulence.

AW

Term

The presence of ice pellets at the surface is evidence that

Definition

there is freezing rain at a higher altitude.

AW

Term

Which conditions result in the formation of frost?

Definition

Temperature of the collecting surface is below the dewpoint of surrounding air and the dewpoint is colder than freezing.

AW

Term

To which meteorological condition does the term "dewpoint" refer?

Definition

The temperature to whcih air must be cooled to become saturated.

AW

Term

What temperature condition is indicated if wet snow is encountered at your flight altitude?

Definition

The temperature is above freezing at your altitude.

AW

Term

The amount of water vapor which air can hold largely depends on

Definition

air temperature

AW

Term

Clouds, fog, or dew will always form when

Definition

water vapor condenses.

AW

Term

What causes surface winds to flow across the isobars at an angle rather than parallel to the isobars?

Definition

surface friction

AW

Term

Winds at 5,000 ft AGL on a particular fligth are southwesterly while most of the surface winds are southerly. This difference in direction is primarily due to

Definition

Friction between the wind and the surface.

AW

Term

What relationship exists between the winds at 2,000 ft above the surface and the surface winds?

Definition

The winds at 2,000 ft tend to parallel the isobars while the surface winds across the isobars at an angle toward lower pressure and are weaker.

AW

Term

Which force, in the Northern Hemisphere, acts at a right angle to the wind and deflects it to the right until parallel to the isobars?

Definition

Coriolis.

AW

Term

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

Definition

Radiation on a clear, relatively still night.

AW

Term

What feature is associated with a temperature inversion?

Definition

A stable layer of air.

AW

Term

What type of clouds will be formed if very stable moist air is forced upslope?

Definition

Stratified clouds with little vertical development.

AW

Term

The general characteristics of unstable air are

Definition

good visibility, showery precipitation, and cumuliform type clouds.

AW

Term

Which is a characteristic of stable air?

Definition

Stratiform clouds

AW

Term

Why type clouds can be expected when an unstable air mass is forced to ascend a mountain slope?

Definition

Clouds with extensive vertical development.

AW

Term

What are the characteristics of stable air?

Definition

Poor visibility, steady precipitation, and stratus type clouds.

AW

Term

What are some characteristics of unstable air?

Definition

Turbulence and good surface visibility.

AW

Term

Stability can be determined from which measurement of the atmosphere?

Definition

Ambient lapse rate.

AW

Term

What determines the structure or type of clouds which form as a result of air being forced to ascend?

Definition

The stability of the air before lifting occurs.

AW

Term

Which of the following combinations of weather producing variables would likely result in cumuliform type clouds, good visibility, rain showers, and possible clear type icing in clouds?

Definition

Unstable, moist air, and orographic lifting.

AW

Term

Unsaturated air flowing upslope will cool at the rate of approximately (dry adiabatic lapse rate)

Definition

3C per 1,000 ft

AW

Term

A temperature inversion will normally form only

Definition

in stable air.

AW

Term

Frontal waves normally form on

Definition

slow moving cold fronts or stationary fronts.

AW

Term

Which are characteristics of an unstable cold air mass moving over a warm surface?

Definition

Cumuliform clouds, turbulence, and good visibility.

AW

Term

The suffix "nimbus", used in naming clouds, means a

Definition

raincloud.

AW

Term

What are the four families of clouds?

Definition

high, middle, low, and those with extensive vertical development.

AW

Term

Which weather phenomenon is always associated with the passage of a frontal system?

Definition

A wind change.

AW

Term

What is indicated by the term "embedded thunderstorms"?

Definition

Thunderstorms are obscured by massive cloud layers and cannot be seen.

AW

Term

Fair weather cumulus clouds often indicate

Definition

turbulence at and below the cloud level.

AW

Term

The average height of the troposphere in the middle latitudes is

Definition

37,500 ft.

AW

(Video) Kids vocabulary - Weather - How's the weather? - Learn English for kids - English educational video

Term

A high cloud is composed mostly of

Definition

ice crystals.

AW

Term

An air mass is a body of air that

Definition

Covers an extensive area and has fairly uniform properties of temperature and moisture.

AW

Term

What enhances the growth rate of precipitation?

Definition

Upward currents.

AW

Term

Which precipitation type normally indicates freezing rain at higher altitudes?

Definition

Ice pellets.

AW

Term

The strength and location of the jetstream is normally

Definition

weaker and farther north in the summer.

AW

Term

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

Definition

Smooth air and poor visibility due to fog, haze, or low clouds.

AW

Term

Which feature is associated with the tropopause?

Definition

Abrupt change in temperature lapse rate.

AW

Term

Which is true regarding the use of airborne weather-avoidance radar for the recognition of certain weather conditions?

Definition

The radarscope provides no assurance of avoiding instrument weather conditions.

AC 00-24B

Term

If the air temperature is +8C at an elevation of 1,350 ft and a standard (average) temperature lapse rate exists, what will be the approximate freezing level?

Definition

5,350 ft MSL.

AW

Term

Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?

Definition

The start of rain at the surface.

AW

Term

Which clouds have the greatest turbulence?

Definition

Cumulonimbus.

AW

Term

Standing lenticular clouds, in mountainous areas, indicate

Definition

turbulence.

AW

Term

The presence of standing lenticular altocumulus clouds is a good indication of

Definition

very strong turbulence.

AW

Term

Which family of clouds is least likely to contribute to structural icing on an aircraft?

Definition

high clouds

AW

Term

Where can wind shear associated with a thunderstorm be found? Choose the most complete answer.

Definition

On all sides of the thunderstorm cell and directly under the cell.

AW

Term

Where do squall lines most often develop?

Definition

Ahead of a cold front.

AW

Term

Where does wind shear occur?

Definition

With either a wind shift or a windspeed gradient at any level in the atmosphere.

AW

Term

What is an important characteristic of wind shear?

Definition

It may be associated with either a wind shift or a windspeed gradient at any level in the atmosphere.

AIM, AW

Term

Which is a characteristic of low level wind shear as it relates to frontal activity?

Definition

With a warm front, the most critical period is before the front passes the airport.

AW

Term

During the life cycle of a thunderstorm, which stage is characterized predominantly by downdrafts?

Definition

Dissipating.

AW

Term

Which weather phenomenon is always associated with a thunderstorm?

Definition

Lightning.

AW

Term

Which thunderstorms generally produce the most sever conditions, such as heavy hail and destructive winds?

Definition

Squall line.

AW

Term

What is an indication that downdrafts have developed and the thunderstorm cell has entered the mature stage?

Definition

Precipitation begins to fall from the cloud base.

AW

Term

What are the requirements for the formation of a thunderstorm?

Definition

Sufficient moisture, an unstable lapse rate, and a lifting action.

AW

Term

What is an important characteristic of wind shear?

Definition

It is an atmospheric condition that may be associated with a low level temperature inversion, a jet stream, or a frontal zone.

AW

Term

Why is frost considered hazardous to flight operation?

Definition

Frost causes early airflow separation resulting in a loss of lift.

AW

Term

In which meteorological environment is aircraft structural icing most likely to have the highest rate of accumulation?

Definition

Freezing rain.

AW

Term

What is an operational consideration if you fly into rain which freezes on impact?

Definition

Temperatures are above freezing at some higher altitude.

AW

Term

Under which condition does advection fog usually form?

Definition

Moist air moving over colder ground or water.

AW

Term

If you fly into severe turbulence, which flight condition should you attempt to maintain?

Definition

Level flight attitude.

AW

Term

Which weather condition can be expected when moist air flows from a relatively warm surface to a colder surface?

Definition

Fog

AW

Term

Fog is usually prevalent in industrial areas because of

Definition

an abundance of condensation nuclei from combustion products.

AW

Term

In which situation is advection fog most likely to form?

Definition

An air mass moving inland from the coast in winter.

AW

Term

In what localities is advection fog most likely to occur?

Definition

Coastal areas.

AW

Term

What types of fog depend upon a wind in order to exist?

Definition

Advection fog and upslope fog.

AW

(Video) How's The Weather Game | Guessing Game

Term

What situation is most conducive to the formation of radiation fog?

Definition

Warm, moist air over low, flatland areas on clear, calm nights.

AW

Term

Which conditions are favorable for the formation of radiation fog?

Definition

Clear sky, little or no wind, small temperature/dewpoint spread, and over a land surface.

AWS

Term

Test data indicate that ice, snow, or frost having a thickness and roughness similar to medium or coarse sandpaper on the leading edge and upper surface of an airfoil can

Definition

reduce lift by as much as 30 percent and increase drag by 40 percent.

AC 20-117

Term

A pilot reporting turbulence that momentarily causes slight, erratic changes in altitude and/or attitude should report it as

Definition

light turbulence.

AIM

Term

Hazardous wind shear is commonly encountered near the ground

Definition

during period of strong temperature inversion and near thunderstorms.

AWS

Term

What is the expected duration of an individual microburst?

Definition

Seldom longer than 15 minutes from the time the burst strikes the ground until dissipation.

AIM

Term

Maximum downdrafts in a microburst encounter may be as strong as

Definition

6,000 ft per minute

AIM

Term

An aircraft that encounters a headwind of 45 knots, within a microburst, may expect a total shear across the microburst of

Definition

90 knots.

AIM

Term

(Refer to figure 13)
If involved in a microburst encounter, in which aircraft positions will the most severe downdraft occur?

Definition

3 and 4.

AIM

Term

(Refer to figure 13)
When penetrating a microburst, which aircraft will experience an increase in performance without a change in pitch or power?

Definition

1

AIM

Term

(Refer to figure 13)
The aircraft in position 3 will experience which effet in a microburst encounter?

Definition

Strong downdraft.

AIM

Term

(Refer to figure 13)
What effect will a microburst encounter have upon the aircraft in position 4?

Definition

Strong tailwind.

AIM

Term

(Refer to figure 13)
How will the aircraft in position 4 be affected by a microburst encounter?

Definition

Performance decreasing with a tailwind and downdraft.

AIM

Term

What wind condition prolongs the hazards of wake turbulence on alanding runway for the longest period of time?

Definition

Light quartering tailwind.

AIM

Term

Wake turbulence is near maximum behind a jet transport just after takeoff because

Definition

of the high angle of attack and high gross weight.

AIM

Term

What effect would a light crosswind of approximately 7 knots have on vortex behavior?

Definition

The upwind vortex would tend to remain over the runway.

AIM

Term

When landing behind a large jet aircraft, at which point on the runway should you plan to land?

Definition

Beyond the jet's touchdown point.

AIM

Term

When passing through an abrupt wind shear which involves a shift from a tailwind to a headwind, what power management would normally be required to maintain a constant indicated airspeed and ILS glide slope?

Definition

Lower than normal power initially, followed by a further increase as the wind shear is encountered, then a decrease.

AC 00-54

Term

What effect will a change in wind direction have upon maintaining a 3 degree glide slope at a constant true airspeed?

Definition

When groundspeed increases, rate of descent must increase.

AC 00-54

Term

While flying a 3 degree glide slope, a constant tailwind shears to a calm wind. Which conditions should the pilot expect?

Definition

Airspeed and pitch attitude increase and there is a tendency to go above glide slope.

AC 00-54

Term

Under which conditions is hydroplaning most likely to occur?

Definition

During conditions of standign water, slush, high speed, and smooth runway texture.

AFH

Term

Thrust is managed to maintain IAS, and glide slope is being flown. What characteristics should be observed when a headwind shears to be a constant tailwind?

Definition

Pitch attitude: decreases
Required thrust: increased, then reduced.
Vertical speed: increases
IAS: increases, then decreases to approach speed

AC 00-54

Term

While flying a 3 degree glide slope, a headwind shears to a tailwind. Which conditions should the pilot expect on the glide slope?

Definition

Airspeed and pitch attitude decrease and there is a tendency to go below glide slope.

AC 00-54

Term

What effect does haze have on the ability to see traffic or terrain features during flight?

Definition

Haze creates the illusion of being a greater distance than actual from the runway, and causes pilots to fly a lower approach.

AIM

Term

When a climb or descent through an inversion or wind shear zone is being performed, the pilot should be alert for which of the following change in airplane performance?

Definition

A sudden change in airspeed.

AW

Term

The body of a Terminal Aerodrome Forecast (TAF) covers a geographical proximity within a

Definition

5 statute mile radius from the center of an airport runway complex.

AWS

Term

What wind direction and speed is represented by the entry 9000+00 for 9,000 ft, on a Winds and Temperatures Aloft Forecast (FD)?

Definition

Light and variable; less than 5 knots.

AWS

Term

What does a Convective Outlook (AC) describe for a following 24 hours period?

Definition

General thunderstorm activity.

AWS

Term

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

Definition

Terminal Aerodrome Forecast (TAF)

AWS

Term

A "VRB" wind entry in a Terminal Aerodrome Forecast (TAF) will be indicated when the wind is

Definition

3 knots or less.

AWS

Term

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

Definition

P6SM

AWS

Term

"WND" in the categorical outlook in the Aviation Area Forecast (FA) means that the wind during that period is forecast to be

Definition

sustained surface wind speed of 20 knots or stronger.

AWS

Term

What is the forecast wind at 1800z in the following TAF?

KMEM 091740Z 091818 00000KT 1/2SM RAFG OVC005=

Definition

Calm

AIM, AWS

Term

What significant sky condition is reported in this METAR observation?

METAR KBNA 091250Z 33018KT 290V360 1/2SM R31/2700FT +SN BLSNGF VV008 00/M03 A2991 RMK RAE42SNB42

Definition

Sky is obscured with vertical visibility of 800 ft.

AIM, AWS

Term

When are sever weather watch bulletins (WW) issued?

(Video) The weather for kids | Learn vocabulary in English | New vocabulary for kids

Definition

Unscheduled and issued as required.

AWS

Term

When is the temperature at one of the forecast altitudes omitted at a specific location or station in the Winds and Temperatures Aloft Forecast (FD)?

Definition

For the 3,000 ft altitude (level) or when the level is within 2,500 feet of station elevation.

AWS

Term

When is the wind group at one of the forecast altitudes omitted at a specific location or station in the Winds and Temperatures Aloft Forecast (FD)? When the win

Definition

at the altitude is within 1,500 ft of the station elevation.

AWS

Term

Decode the excerpt from the Winds and Temperatures Aloft Forecast (FD) for OKC at 39,000 ft

FT: 39000
OKC: 830558

Definition

Wind 330 at 50 knots, temperature -58C

AWS

Term

Which values are used for winds aloft forecast?

Definition

True direction and knots.

AWS

Term

(Refer to figure 2)
What approximate wind direction, speed, and temperature (relative to ISA) should a pilot expect when planning for a flight over PSB at FL 270?

Definition

255 true at 93 knots; ISA +6C

AWS

Term

(Refer to figure 2)
What approximate wind direction, speed, and temperature (relative to ISA) should a pilot expect when planning for a flight over ALB at FL 270?

Definition

275 true at 97 knots; ISA +4C

AWS

Term

(Refer to figure 2)
What approximate wind direction, speed, and temperature (relative to ISA) should a pilot expect when planning for a flight over EMI at FL 270?

Definition

265 true; 100 knots; ISA +3C

AWS

Term

The station originating the following weather report has a field elevation of 1,300 ft MSL. From the bottom of the overcast cloud layer, what is its thickness? (tops of OVC are reported at 3800 feet)

SPECI KOKC 092228Z 28025G36KT 3/4SM BKN008 OVC020 28/23 A3000

Definition

500 ft.

AIM, AWS

Term

Which response most closely interprets the following PIREP?

UA/OV OKC 063064/TM 1522/FL080TP C172/TA-04/WV 245040/TB LGT/RM IN CLR

Definition

64 nautical miles on the 63 degree radial from Oklahoma City VOR at 1522 UTC, flight level 8,000 ft. Type of aircraft is a Cessna 172.

AWS

Term

A station is forecasting wind and temperature aloft at FL 390 to be 300 at 200 knots; temperature -54C. How would this data be encoded in the FD?

Definition

809954

AWS

Term

Are forecasts generally include a forecast period of 18 hours and cover a geographical

Definition

area the size of several states.

AWS

Term

"WND" in the categorical outlook in the Aviation Area Forecast means that the wind during that period is forecast to be

Definition

sustained surface wind speed of 20 knots or greater.

AWS

Term

A ceiling is defined as the height of the

Definition

lowest layer of clouds or obscuring phenomena aloft that is reported as broken or overcast.

AWS

Term

The reporting station originating this Aviation Routine Weather Report has a field elevation of 620 ft. If the reported sky cover is one continuous layer, what is its thickness? (tops of OVC are reported at 6,500 ft)

METAR KMDW 121856Z AUTO 32005KT 1 1/2SM +RABR OVC007 17/16 A2980

Definition

5,180 ft

AIM, AWS

Term

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 1 SM-DZ BR VV003 BECMG 2021 5SM HZ=

Definition

500 ft AGL from 270 at 50 kt

AIM, AWS

Term

What is meant by the entry in the remarks section of METAR surface report for KBNA

METAR KBNA 211250Z 33018KT 290V260 1/2SM R31/2700FT +SN BLSNFG VV008 00/M03 A2991 RMK RAE42SNB42

Definition

Rain ended 42 past the hour, snow began 42 past the hour

AIM, AWS

Term

What information is provided by a Convective Outlook (AC)?

Definition

It provides prospects of both general and severe thunderstorm activity during the following 24 hours.

AWS

Term

Interpret this PIREP

MRB UA/OV MRB/TM1430/FL060/TPC182/SK BKN BL/WX RA/TB MDT

Definition

At 6,000 ft; between layers; moderate turbulence; moderate rain.

AWS

Term

Which weather forecast describes prospects for an area coverage of both severe and general thunderstorms during the following 24 hours?

Definition

Convective outlook.

AWS

Term

From which primary source should you obtain information regarding the weather expected to exist at your destination at your estimated time of arrival?

Definition

Terminal Aerodrome Forecast

AIM, AWS

Term

AIRMET's are issued on a scheduled basis every

Definition

six hours

AIM

Term

Which meteorological condition is issued in the form of a SIGMET (WS)?

Definition

Widespread sand or dust storms affecting at least 3,000 square miles or an area deemed to have a significant effect on the safety of aircraft oprations.

AIM

Term

What important information is provided by the Radar Summary chart that is not shown on other weather charts?

Definition

Lines and cells of hazardous thunderstorms.

AWS

Term

What flight planning information can a pilot derive from constant pressure charts?

Definition

Winds and temperatures aloft.

AWS

Term

(Refer to figure 4)
Wha tis the meaning of a bracket (]) plotted to the right of the station circle on a weather depiction chart?

Definition

The station is an automated observation location.

AWS

Term

(Refer to figure 4)
the Weather Depiction Chart indicates the heaviest precipitation is occurring

Definition

north central Minnesota.

AWS

Term

(Refer to figure 4)
The Weather Depiction Chart in the area of northwestern Wyoming, indicates

Definition

500-ft ceilings and continuous rain, less than 3 miles visibility.

AWS

Term

The Surface Analysis Chart depicts

Definition

actual frontal positions, pressure patterns, temperature, dewpoint, wind, weather, and obstructions to vision at the valid time of the chart.

AWS

Term

The Low-Level Significant Weather Prognostic Chart depicts weather conditions

Definition

that are forecast to exist at a valid time shown on the chart.

AWS

Term

Which meteorological conditions are depicted by a prognostic chart?

Definition

Conditions forecast to exist at a specific time shown on the chart.

AWS

Term

(Refer to figure 5)
What is the meaning of the symbol depicted as used on the US Low-Level Significant Weather Prog Chart?

Definition

Shower precipitation (e.g. rain showers) embedded in an area of continuous rain covering half or more of the area.

AWS

Term

A prognostic chart depicts the conditions

Definition

forecast to exist at a specific time in the future.

AWS

(Video) How to DECODE a METAR report (part 1) / Explained by CAPTAIN JOE

Term

(Refer to figure 18)
(SFC PROG) A planned low altitude flight from northern Florida to southern Florida or 00z is likely to encounter

Definition

showery precipitation, thunderstorms/rain showers covering half or more of the area.

AWS

Term

(Refer to figure 18)
The 24 hour Low LEvel Significant Weather Prog at 12Z indicates that southwestern West Virginia will likely experience

Definition

ceilings less that 1,000 ft, visibility less than 3 miles.

AWS

Term

(Refer to figure 18)
The US Low Level Significant Weather Surface Prog Chart at 00Z indicates that northwestern Colorado and eastern Utah can expect

Definition

moderate or greater turbulence from the surface to FL 240.

AWS

Term

(Refer to figure 18)
The chart symbols shown in the Gulf of Mexico at 12Z and extending into AL, GA, SC, and northern FL indicate a

Definition

tropical storm.

AWS

Term

(Refer to figure 7)
What weather conditions are depicted within the area indicated by arrow E?

Definition

Occasional cumulonimbus, 1/8 to 4/8 coverage, bases below 24,000 ft MSL, and tops at 40,000 ft MSL.

AWS

Term

(Refer to figure 7)
What weather conditions are depicted within the area indicated by arrow D?

Definition

Forecast isolated embedded cumulonimbus clouds with tops at 43,000 ft MSL, and less than 1/8 coverage.

AWS

Term

(Refer to figure 7)
What weather conditions are predicted within the area indicated by arrow C?

Definition

Moderate turbulence at 32,000 ft MSL

AWS

Term

(Refer to figure 7)
What weather conditions are depicted within the area indicated by arrow B?

Definition

Moderate turbulence from below 24,000 ft MSL to 37,000 ft MSL

AWS

Term

(Refer to figure 7)
What information is indicated by arrow A?

Definition

The height of the tropopause in hundreds of feet above MSL.

AWS

Term

(Refer to figure 7)
What weather conditions are depicted within the area indicated by arrow F?

Definition

Occasionally embedded cumulonimbus, bases below 24,000 ft with tops to 48,000 ft.

AWS

Term

(Refer to figure 8)
What weather conditions are depicted in the area indicated by arrow A on the Radar Summary Chart?

Definition

Strong to very strong echoes; echo tops 30,000 ft MSL; thunderstorms and rain showers.

AWS

Term

(Refer to figure 8)
What weather conditions are depicted in the area indicated by arrow D on the Radar Summary Chart?

Definition

Intense to extreme echoes within the smallest contour, echo tops 29,000 ft MSL, and cell movement toward the northeast at 50 knots.

AWS

Term

(Refer to figure 7)
The area indicated by arrow H indicates

Definition

moderate turbulence at and below 34,000 ft.

AWS

Term

(Refer to figure 8)
What weather conditions are depicted in the area indicated by arrow C on the Radar Summary Chart?

Definition

Area movement toward the northeast, strong to very strong echoes, and echo tops 28,000 ft MSL

AWS

Term

(Refer to figure 8)
What weather conditions are depicted in the area indicated by arrow B on the Radar Summary Chart?

Definition

Weak to moderate echoes, rain showers increasing in intensity.

AWS

Term

(Refer to figure 8)
What weather conditions are depicted in the area indicated by arrow E on the Radar Summary Chart?

Definition

Highest echo tops 30,000 ft MSL, weak to moderate echoes, thunderstorms and rain shower, and cell movement toward northwest at 15 knots.

AWS

Term

For most efective use of the Radar Summary Chart during preflight planning, a pilot should

Definition

know the chart displays precipitation only; it does not display clouds, fog, fronts, or other boundaries.

AWS

Term

(Refer to figure 8)
What weather conditions are depicted in the area indicated by arrow G on the Radar Summary Chart?

Definition

Echo bases 10,000 ft MSL; cell movement toward northeast at 15 knots; weak to moderate echoes; rain.

AWS

Term

(Refer to figure 8)
What weather conditions are depicted in the area indicated by arrow F on the Radar Summary Chart?

Definition

Line of echoes; thunderstorms; highest echo tops 45,000 ft MSL; no line movement indicated.

AWS

Term

(Refer to figure 9)
The Severe Weather Outlook Chart, which is used primarily for advance planning, provides what information?

Definition

A 24-hour severe weather outlook for possible thunderstorm activity.

AWS

Term

(Refer to figure 9)
Using the DAY 2 CONVECTIVE OUTLOOK, what type of thunderstorms, if any, may be encountered on a flight from Montana to central California?

Definition

General

AWS

Term

(Refer to figure 20)
What is the maximum wind velocity forecast in the jet stream shown on the high level Significant Weather Prognostic Chart over Canada?

Definition

130 knots.

AWS

Term

(Refer to figure 20)
What is the height of the tropopause over Kentucky?

Definition

FL340

AWS

Term

(Refer to figure 12)
What is the approximate wind direction and velocity at 34,000 ft (see arrow C)?

Definition

290 at 50 knots

AWS

Term

(Refer to figure 12)
The wind direction and velocity on the Observed Winds Aloft Chart (see arrow A) is indicated from the

Definition

southwest at 35 knots.

AWS

Term

(Refer to figure 9)
What type of thunderstorm activity is expected over Montana on April 4th at 0800z?

Definition

None.

AWS

Term

(Refer to figure 12)
What is the approximate wind direction and velocity at CVG at 34,000 ft (see arrow A)?

Definition

230 at 35 knots

AWS

Term

(Refer to figure 12)
What is the approximate wind direction and velocity at BOI (See arrow B)?

Definition

250 at 95 knots.

AWS

Term

(Refer to figure 7)
The symbol on the US HIGH LEVEL SIGNIFICANT WEATHER PROG, indicated by arrow G, represents the

Definition

height of the tropopause.

AWS

Term

SIGMET's are issued as a warning of weather conditions potentially hazardous

Definition

to all aircraft.

AIM

Term

Which meteorological condition is issued in the form of a SIGMET (WS)?

Definition

Widespread sand or duststorms affecting at least 3,000 square miles or an area deemed to have a significant effect on the safety of aircraft operations.

AIM

Term

Which forecast provides specific information concerning expected sky cover, cloud tops, visibility, weather, and obstructions to vision in a route format?

Definition

249 TWEB 252317.

AWS

Term

What is the maximum forecast period for AIRMETs?

Definition

Six hours.

AIM

Term

The Hazardous Inflight Weather Advisory Service (HIWAS) is a continuous broadcast over selected VORs of

Definition

SIGMETs, CONVECTIVE SIGMETs, AIRMETs, Severe Weather Forecasts Alerts (AWW), and Center Weather Advisories.

AIM

Term

What does the Runway Visual Range (RVR) value, depicted on certain straight-in IAP Charts, represent?

Definition

The horizontal distance a pilot should see when looking down the runway from a moving aircraft.

AIM

(Video) Weather types quiz

Term

On what frequency should you obtain En Route Flight Advisory Service below FL 180?

Definition

122.0

AIM

Videos

1. Teaching Weather
(ESL Adventures)
2. Weather Balloons and Radiosondes
(CoCoRaHS HQ)
3. Weather Song for kids | "Sun, Rain, Wind, and Snow" | The Singing Walrus
(The Singing Walrus - English Songs For Kids)
4. Types Of Precipitation | How do we get Rain, Hail, Freezing Rain, Sleet & Snow
(Impressive angle)
5. WEATHER THEMED PRESCHOOL ACTIVITIES | Play-Based Preschool Weather Curriculum | The Carnahan Fam
(The Carnahan Fam)
6. HOW TO CHECK LIVE CLIMATE STATUS | WEATHER STATUS | WEBSITE | LEARNER'S LINE
(LEARNER'S LINE)

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