Aviation Weather

Front 1

The center responsible for issuing Area Forecasts, AIRMETs, and SIGMETs is the

Back 1

Aviation Weather Center

Front 2

When a cold front overtakes a warm front an _________ is formed.

Back 2

Occluded Front

Front 3

The wind circulation around an area of low pressure in the Northern Hemisphere is

Back 3

Counterclockwise and toward the center

Front 4

The jet stream is a narrow, high speed river of wind found near the

Back 4

tropopause

Front 5

A cloud type belonging to the low cloud family and occurring only between the surface and 6500 feet AGL is

Back 5

stratus

Front 6

Which agency/office collects and analyzes meteorological and hydrological data, and subsequently prepares weather forecasts?

Back 6

National Weather Service

Front 7

Which of the following is not a form of precipitation?

Back 7

Fog

Front 8

What cloud type frequently produces an anvil shape and is most hazardous to aviation?

Back 8

Cumulonimbus

Front 9

The force that deflects air to the right in the Northern Hemisphere is called the ________ force.

Back 9

Coriolis

Front 10

Providing forecast, weather consultation, and advice to ARTCC managers is the role of the

Back 10

Center Weather Service Unit

Front 11

An air mass is primarily modified by

Back 11

heating or cooling from the surface below.

Front 12

The atmospheric layer containing most of the earth's weather is the

Back 12

troposphere

Front 13

Center Weather Service Units are a joint agency aviation weather support team composed of personnel form the NWS and

Back 13

FAA Traffic Management Unit

Front 14

The standard lapse rate within the troposphere is a 2-degree celsius in temperature with each increase of __________ feet in altitude.

Back 14

1,000

Front 15

Which characteristic is typical of a stable air mass?

Back 15

smooth air

Front 16

Center Weather Service Units are located

Back 16

Within all ARTCCs

Front 17

What type of cloud has the prefix of nimbo or the suffix or nimbus?

Back 17

Precipitation cloud

Front 18

An extensive body of air within which temperature and moisture in a horizontal plane are essentially the same is described as a/an

Back 18

Air Mass

Front 19

The temperature to which air must be cooled to become saturated is called

Back 19

Dew Point

Front 20

An elongated area of high pressure is called a/an

Back 20

ridge

Front 21

M1/4SM is read as

Back 21

Visibility less than one quarter

Front 22

Routine METAR hourly observations that meet special criteria will be reported as

Back 22

METAR

Front 23

CIG 005V008 is read as

Back 23

Ceiling variable between 500 and 800

Front 24

T or F: SKC is reported at manual stations when the sky is clear and CLR is reported at automated stations when no clouds below 12,000 feet are reported

Back 24

True

Front 25

Station identifiers for all weather reporting stations in the conterminous United States will begin with a/an

Back 25

K

Front 26

In a METAR report, the temperature/dew point group follows the _______ element

Back 26

Sky Condition

Front 27

R17/M0600FT is read as

Back 27

Runway one seven R-V-R less than 600

Front 28

Cloud heights are reported in _______ AGL.

Back 28

hundreds of feet

Front 29

If the temperature is missing, the element in the METAR report is ______.

Back 29

Omitted

Front 30

Where the RVR value reported in a METAR or SPECI report?

Back 30

after the visibility element

Front 31

In a METAR report the altimeter element follows the _____.

Back 31

Temperature/Dew Point Group

Front 32

Tornado E30 is read as

Back 32

Tornado ended at three zero past the hour

Front 33

T or F: Variable visibility is indicated by entering "V" between the visibility value and "SM" and the minimum and maximum visibility entered in remarks separated by a "V".

Back 33

False

Front 34

In a METAR report, the visibility element follows the _______ element.

Back 34

Wind

Front 35

+TSRAGR is read as

Back 35

Thunderstorm, heavy rain, hail

Front 36

Reportable cloud layer types are:

Back 36

VV, FEW, SCT, BKN, OVC

Front 37

10SM is read as

Back 37

Visibility one zero

Front 38

Station identifiers for all weather reporting stations in Alaska will begin with a

Back 38

PA

Front 39

T or F: VC indicates the location of an obscuration between 5 and 15 miles of the usual observation point.

Back 39

False

Front 40

00000KT is read as:

Back 40

Wind Calm

Front 41

What phenomenon rarely reduces visibility to less than 1 mile?

Back 41

Rain

Front 42

What phenomenon is most likely to reduce visibility to near zero?

Back 42

Blowing Snow

Front 43

Which characteristic is typical of clear ice?

Back 43

Smooth

Front 44

Convective turbulence is caused by very warm surface temperature and uneven heating of the earth's surface.

Back 44

True

Front 45

In order for structural icing to form on an aircraft in flight, which of the following must occur?

Back 45

The aircraft must be flying through visible moisture

Front 46

A large downburst producing an outflow of wind in excess of 2.5 miles horizontally is called:

Back 46

A Macroburst

Front 47

The weather phenomenon containing just about every hazard to an aircraft in flight is a

Back 47

Thunderstorm

Front 48

A change in wind speed and/or direction in a short distance is:

Back 48

Wind Shear

Front 49

A wind shear produces the greatest hazards to aircraft in high altitudes

Back 49

False

Front 50

A violent rotating column of wind in contact with the ground is called:

Back 50

Tornado

Front 51

A tropical cyclone producing sustained winds of 65 knots or more in the atlantic and easter Pacific oceans is called a

Back 51

Typhoon

Front 52

Turbulence which causes changes in altitude and/or altitude, but the aircraft remains in positive control at all times should be identified as:

Back 52

Moderate

Front 53

Turbulence intensities are classified as:

Back 53

Light, moderate, severe, and extreme

Front 54

The weather related hazard to aircraft that can accelerate forward and downward speeds, causing aircraft to crash on departure or landing is called a/an:

Back 54

Tail wind

Front 55

OKC UA/OV OKC180010/TM 1516/FL 120/TP C500/SK BKN035-TOP075/OVC095/WX FV01SM SN/TA M04/TB MOD 050-070/RM TCU W DURC

What is the intensity of the turbulence?

Back 55

Moderate

Front 56

OKC UA/OV OKC180010/TM 1516/FL 120/TP C500/SK BKN035-075-TOP075/OVC095/WX FV01SM SN/TA M04/TB MOD 050-070/RM TCU W DURC

What was the weather element that caused the reduction in visibility?

Back 56

Snow

Front 57

The purpose of a PIREP is:

Back 57

to report meteorological conditions in flight

Front 58

OKC UA/OV OKC180010/TM 1516/FL 120/TP C500/SK BKN035-075-TOP075/OVC095/WX FV01SM SN/TA M04/TB MOD 050-070/RM TCU W DURC

What is the height of the base of the second layer?

Back 58

9500 feet

Front 59

OKC UA/OV OKC180010/TM 1516/FL 120/TP C500/SK BKN035-075-TOP075/OVC095/WX FV01SM SN/TA M04/TB MOD 050-070/RM TCU W DURC

What is included in the remarks?

Back 59

Towering cumulus clouds west of aircraft

Front 60

PIREPS are used by _______ to expedite the traffic flow in the vicinity of an airport.

Back 60

Towers

Front 61

OKC UA/OV OKC180010/TM 1516/FL 120/TP C500/SK BKN035-075-TOP075/OVC095/WX FV01SM SN/TA M04/TB MOD 050-070/RM TCU W DURC

What is the type of aircraft that made this report?

Back 61

C500

Front 62

Each PIREP must include the type of aircraft, altitude, location, and

Back 62

Time

Front 63

OKC UA/OV OKC180010/TM 1516/FL 120/TP C500/SK BKN035-075-TOP075/OVC095/WX FV01SM SN/TA M04/TB MOD 050-070/RM TCU W DURC

At what altitude(s) did the aircraft first encounter turbulence?

Back 63

5000 feet

Front 64

Controllers must solicit PIREPS when _____ is reported.

Back 64

Moderate Turbulence

Front 65

In the SIGMET below, icing is forecast at that altitude(s)?

SIGMET PAPA 1 VALID UNTIL 052110
AR LA MS
FROM STL TO 30N MEI TO BTR TO MLU TO STL
OCNL SVR ICING 90 TO 130 EXPCD.
FRZLVL 80 E TO 120 W.CONDS CONTG BYD 2100Z.

Back 65

9000 to 13000

Front 66

At 30,000 feet, what would 651224 indicate in the FB?

Back 66

Wind 150 degrees at 112 knots temperature -24 degrees Celsius

Front 67

Severe icing NOT associated with thunderstorms is the criteria for issuance of what type of aviation weather advisory?

Back 67

AIRMET ZULU

Front 68

As part of the TAF sky conditions, which cloud type(s) is/are forecast?

Back 68

CB

Front 69

SIGMET advisories are issued:

Back 69

When required

Front 70

Which weather advisory would be used to describe embedded thunderstorms over Indiana and Ohio?

Back 70

Convective SIGMET

Front 71

In a TAF, events forecast to generally last less than an hour are encoded with what contraction?

Back 71

TEMPO

Front 72

Precipitation and/or obstructions to vision are always included in TAF reports when visibility is:

Back 72

Less than 6 statute miles

Front 73

AIRMET TANGO advisories are issued for which condition?

Back 73

Turbulence

Front 74

Which scheduled forecast is used to provide forecast conditions for the en route portion of a flight when the route of flight will cross ARTCC boundaries?

Back 74

Area Forecast

Front 75

Which of the following is a correctly formatted valid time for a TAF forecast time from 0000Z on June 12 to 0000Z on June 13

Back 75

120024

Front 76

A short-term "now-cast" issued by a Center Weather Service Unit that is only valid for up to 2 hours is a/an:

Back 76

CWA (Center Weather Advisory)

Front 77

A flow control and flight operations planning forecast of conditions expected to begin beyond 2 hours, but within 12 hours, of issuance is a/an:

Back 77

MIS

Front 78

FB forecast altitudes are in true altitude up to and including _____ feet.

Back 78

12,000

Front 79

In a TAF, what does the 4-digit time appended to the FM contraction indicate?

Back 79

The hour and minute the change is expected to begin

Front 80

In a TAF, PROB30 is used when the likelihood of an event is _____ percent.

Back 80

30

Front 81

Until what time is the following Kansas City Center Weather Advisory 301 valid?

ZKC3 CWA 032140
ZKC CWA 301 VALID UNTIL 032340
ISOLD SEV TS OVR COU MOVG FROM 04010KT. TOP 610. WND GSTS TO 55KTS.
HAIL TO 1 INCH RPRTD AT COU SEV. TS CONTG BYD 2340.

Back 81

2340

Front 82

In a TAF, wind shear is given in hundreds of feel AGL up to and including ______ feet.

Back 82

2000

Front 83

When an inflight advisory has NOT yet been issued, but conditions meet the criteria to issue and advisory, a/an _______may be issued.

Back 83

CWA

Front 84

In a TAF, the FM contraction is used to indicate:

Back 84

A significant change