Meteorologia 2 ( 60 )

A flight is scheduled at daybreak. The current conditions are rainy, but conditions are expected to clear. The forecast temperature is degrees C, dew point degrees C, with 330 degrees at 5 knots. What weather conditions can you expect?. The conditions are favorable for radiation fog. Dende fog which will deepen during the day. Severe ground icing.

The Hazardous Inflight Weather Advisory Servise (HIWAS) is a continuous broadcast over selected VORs of. SIGMET, CONVECTIVE SIGMETs, AIRMETs, severe Wearther Forecast Alerts (AWW), and Center WeatherAdvisories (CWA). SIGMET, CONVECTIVE SIGMETs, AIRMETs, Wind Shear Advisories, and Severe Weather Forecast Alerts (AWW). Wind Shear Advisories, Radar Weather Reports, SIGMET, CONVECTIVE SIGMETs, AIRMETs, and Center Weather Advisories (CWA).

Which feature is associated with the tropopause?. Absence of wind and turbulence. Absolute upper limit of cloud formation. Abrupt change of temperature lapse rate.

When high level moisture is available, cirrus clouds form on the. polar side of the jet stream. equatorial side of the jet stream. acute angle of the jet stream.

Which airplane performance characteristics should be recognized during takeoff when encountering a tailwind shear that increases in intensity?. Loss of, or diminished, airspeed performance. Decreased takeoff distance. Increased climb performance inmediately after takeoff.

What is a likely location of clear air turbulences?. In an upper trough on the polar side of a jetstream. Near a ridge aloft on the equatorial side of high pressure flow. Downstream of the equatorial side of a jetstream.

Which event usually occurs after an aircraft passes through a front into the colder air?. Temperature/dewpoint spread decreases. Wind direction shifts to the left. Atmospheric pressure increases.

( Refer to figure 149. ) What aproximate wind direction, speed, and temperature ( relative to ISA ) are expected for a flight over MKC at FL 260?. 260 true; 43 knots: ISA +10C. 260 true; 45 knots; ISA -10C. 260 magnetic; 42 knots; ISA +9C.

Freezing Point Depressant (FPD) fluids used for deicing. provide ice protection during flight. are intented to provide ice protection on the ground only. on the ground, cause no performance degradation during takeoff.

What characterizes a ground-bases inversion?. Convection currents at the surface. Cold temperature. Poor visibility.

The Tropopause is generally found when the free air temperatures are. between -55degC and -65degC. between -40degC and -55degC. colder than -60degC.

Which conditions are necessary for the formation of upslope fog?. Moist, stable air being moved over gradually rising ground by a wind. A clear sky, little or no wind, and 100 percent relative humidity. Rain falling through stratus clouds and a 10- to 25-knot wind moving the precipitation up the slope.

Which is an effect of ice, snow or frost formation on an airplane?. Decreased stall apeed. Decreased pitchup tendencies. Decreased angle of attack for stalls.

( Refer to figure 149.) What will be the wind temperatuer trend for an STL MEM MSY flight at FL 330?. Windspeed decrease. Wind shift from west to north. Temperature increase 5C.

Which process causes adiabatic cooling?. Expansion of air as it rises. Movement of air over a colder surfaces. Release of latent heat during the vaporization process.

Which primary source contains information regarding the expected weather at the destination airport, at the ETA?. Low-Level Prog Chart. Weather Depiction Charts. Terminal Aerodrome Forecast.

Where can the maximun hazard zone caused by wind shear associated with a thunderstorm be found?. In front of the thunderstorm cell (anvil side) and on the southwest side of the cell. Ahead of the roll cloud or gust front and directly under the anvil cloud. On all sides and directly under the thunderstorm cell.

Which tipe cloud is associated with violnet turbulence and a tendency toward the production of funnel clouds. Cumulonimbus mammatus. Standing lenticular. Stratocumulus.

How will an area of area thunderstorm activity, that may grow to severe intensity, be indicated on the Severe Weather Outlook Chart?. SLGT within cross-hatched areas. APCHG within any area. SVR within any area.

A clear area in a line of thunderstorm echoes on a radar scope indicates. the absence of clouds in the area. an area of no convective turbulence. an area where precipitation drops are not detected.

Snow on top of deicing or anti-icing fluids. need not be considered as adhering to the aircraft. must be considered as adhering to the aircraft. must be considered as adhering to the aircraft, but a safe takeoff can be made as it will blow off.

Which wind-shear condition results in an increase in airspeed?. Increasing tailwind and decreasing headwind. Increasing tailwind and headwind. Decreasing tailwind and increasing headwind.

Atmospheric pressure changes due to a thunderstorm will be at the lowest value. during the downdraft and heavy rain showers. when the thunderstorm is approaching. inmediately after the rain showers have stopped.

What wind direction and speed aloft are forecast by this WINDS AND TEMPERATURE ALOFT FORECAST (FD) for FL390 - '731960'?. 230 at 119 knots. 131 at 96 knots. 073 at 196 knots.

( Refer to figure 144.) What effect will a microburst encounter have upon the aircraft in position 3?. Decreasing headwind. Increasing tailwind. Strong downdraft.

Clear air turbulence associated with a jet stream is. most commonly found in temperature between -40 and -50 degrees C. most commonly found in the vicinity of the tropopause. similar to that associated with a tropical maritime front.

Convective clouds which penetrate a stratus layer can produce which thereat to instrument flight?. Freezing rain. Clear air turbulence. Embedded thunderstorms.

Which wind-shear results condition results in a loss of aispeed?. Decreasing headwind or tailwind. Decreasing headwind and increasing tailwind. Increasing headwind and decreasing tailwind.

(Refer to Figure 154.) What is the height of the 300-millibar levek at the low pressure center in Canada. 9,120 meters MSL. 18,000 meters MSL. 11,850 meters MSL.

Weather conditions expected to occur in the vicinity of the airport, but not at the airport, are denoted by the letters 'V(C). When V(C) appears in a Terminal Aerodrome Forecast, it covers a geographical area of. a 5 to 10 status mile radius from the airport. a 5-mile radius of the center of a runway complex. 10 miles of the station originating the forecast.

A strong wind shear can be expected. on the low pressure side of a 100-knot jetstream core. where the horizontal wind shear is 15 knots, in a distance equal to 2.5 longitude. if the 5'c isotherms are spaced 100 NM or claser together.

The Pilot in command of an airplane en route determines that icing conditions can be expected that might adversely affect safety of the flight. Which action is appropiate?. The pilot in command may continue to the original destination airport, after climbing to a higher altitude. The pilot in command shall not continue flight into the icing conditions. The flight may continue to the original destination airport, provided all anti-icing and deicing equipment is operational and is used.

Doppler wind measurements indicate that the windspeed change a pilot may expect when flying through the peak intensity a microburts is approximately. 15 knots. 25 knots. 45 knots.

Vertical wind shear can be determinated directly from the dashed lines on the tropopause data chart. The vertical wind shear that is critical for probability of turbulence is. 4 knots or greater per 1,000 feet. 6 knots or more per 1,000 feet. greater than 8 knots per 1,000 feet.

(Refer to Figure 145.) What condition is reported at Dallas (KDAL) ?. The tops of the overcast is 10,000 feet. Temperature/dewpoint spread is 8F. Altimeter setting is 30.07.

Low pressure areas are areas of. stagnant air. descending air. ascending air.

You are planning a flight to a coastal area which is currently below published weather minimuns for the ILS approach due to fog. The winds are forecast to increase to 20 knots from the west at your scheduled arrival time. What weather should you expect?. Surface ice. Advection fog thickening as the winds increase to 20 knots. A low layer of stratus or stratocumulus clous.

Freezing Point Depressant (FPD) fluids are highly soluble in water; however. ice is slow to absorb it but fast to melt when in contact with FPD. ice absorbs it very fast but is slow to melt when in contac with it. ice is slow to absorb it, and to melt when in contact with it.

In comparison to an approach in an moderate headwind, which is an indication of a possible wind shear due a decreasing headwind when descending on the glide slope?. Less power is required. Higher pitch attitude is required. Lower descent rate is required.

(Refer to figure 149.) what will be the wind and temperature trend for an SAT ELP TUS flight at 16,000 feet?. Temperature decrease slightly. Windspeed decrease. Wind direction shift from southwest to east.

( Refer to Figure 153.) what areas does jet stream overlie?. Central portion of Texas. North Washington and Idaho. South of Montana and North Dakota.

Maximum turbulence potencial charts (GTG-2) are issued. every morning at 0400. two times a day. hourly.

What information is provided bye a convective Outlook (AC)?. It describes areas of probable severe icing and severe or extreme turbulence during the next 24 hours. It provides prospects of both general and severe thunderstorm activity during the following 24 hours. It indicates areas of probable convective turbulence and the extent of instability in the upper atmosphere ( above 500 mb ).

what weather is predicted by the term VCTS in a Terminal Aerodrome Forecast?. Thunderstorms are expected in the vicinity. Thunderstorms may occur over the station and within 50 miles of the station. Thunderstorms are expected between 5 miles of the runway complex.

(Refer to figure 155.) What areas does the jet stream overlie?. South of the high pressure system located in Texas. Southern California and central Nevada. South of the low pressure system in Canada.

what is a Characteristic of the troposphere?. It contains all the moisture of the atmosphere. There is an overall decrease of temperature with an increase of altitude. The average altitude of the top of the troposphere is about 6 miles.

Frozen dew is. white and opaque. hard and opaque. hard and transparent.

Where are jetstream normally located?. in areas of strong low pressure system in the stratosphere. In a break in the tropopause where intensified temperature gradients are located. In a single continuous band, encircling the Earth, where there is a break between the equatotial and polar tropopause.

A station is forecasting wind and temperature aloft to be 280 at 205 knots; temperature -51c at FL390. How would this data be encoded in the FD?. 7800-51. 789951. 280051.

Thrust is being managed to mantain desired indicated airspeed and the glide slope is being flow. which characteristics should be observed whena tailwind shears to a constant headwind?. PICH ATTITUDE: Increases. VERTICAL SPEED: Increases. INDICATED AIRSPEED: Decreases, then increases to approach speed. PICH ATTITUDE: Increases. VERTICAL SPEED: Increases. INDICATED AIRSPEED: increases, then decreases. PICH ATTITUDE: Decreases. VERTICAL SPEED: Decreases. INDICATED AIRSPEED: Decreases, then increases to approach speed.

Where do the maximum winds associated with the jetstream usually occur?. In the vicinity of breaks in the tropopause on the polar side of the jet core. Below the jet core where a long straight of the jetstream is located. On the equatorial side of the jetstream where moisture has formed cirriform clouds.

( Refer to figure 145.) The peak wind at KAMA was reported tobe from 320 true at 39 knots. Which occurred at 1743Z. With gust to 43 knots. With .43 of an inch liquid precipitation since the last report.

A steady state thunderstorm is associated with. surface heating. weather systems. mature stage.

Which weather condition is present when the tropical storm is upgraded to a hurricane?. Highest windspeed, 100 knots or more. A clear area or hurricane eye has formed. Sustained winds of 65 knots or more.

What term describes an elongated area of low pressure?. Trough. Ridge. Hurricane or typhoon.

When will frost likely form on aircraft surface?. On clear nights with stable air light winds. On overcast nights with freezing drizzle precipitation. On clear nights with convective action and a small temperature/dewpoint spread.

Freezing Point Depressant (FPD) fluid residue engine fan or compresor blades. can increase performance and cause stalls or surges. could cause FDP vapors to enter the aircraft but would have no affect on engine thrust or power. can reduce angine performance and cause surging and/or compressor stalls.

When flying over the top of a severe thunderstorm, the cloud should be overflow by at least. 1,000 feet for each 10 knots windspeed. 2,500 feet. 500 fett above any moderate to severe turbulence layer.

What temperature condition is indicated if precipitation in the form wet snow occurs during flight?. the temperature is above freezing at flight altitude. the temperature is above freezing at higher altitudes. there is an inversion with colder air below.

(Refer to figure 145.) What weather improvement was reported at lubbock (KLBB) between 1750 and 1818 UTC?. the wind shift and frontal passage at 1812Z. the vertical visibility improved by 2,000 feet. the temperature and dewpoint spread improved.