Term
| (Refer to Figure 5.) What is the valid period for the TAF for KMEM? |
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Interpret the following radar weather report:
LIT 1133 AREA 4TRW 22/100 88/170 196/180 220/115 C2425 MT 310 AT 162/110 |
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Definition
| The maximum top of the cells is located 162° and 110 NM from the station (LIT). |
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Term
| What is the meaning of MVFR, as used in the categorical outlook portion of an Aviation Area Forecast? |
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Definition
| A ceiling of 1,000 to 3,000 feet and/or visibility of 3 to 5 miles. |
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Term
| A Weather Depiction Chart is useful to a pilot in determining |
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Definition
| areas where weather conditions were reported above or below VFR minimums. |
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Term
| Convective circulation patterns associated with sea breezes are caused by |
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Definition
| land absorbing and radiating heat faster than the water. |
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Term
| Advection fog is formed as a result of |
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Definition
| moist air moving over a colder surface. |
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Term
| The height of the bases of the middle clouds in the middle latitudes ranges from |
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Definition
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Term
| If the air temperature is +12°C at an elevation of 1,250 feet and a standard (average) temperature lapse rate exists, what will be the approximate freezing level? |
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Definition
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Term
| Which in-flight hazard is most commonly associated with warm fronts? |
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Definition
| Precipitation-induced fog. |
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Term
| (Refer to Figure 3.) Which station is reporting the wind as calm? |
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Definition
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Term
| (Refer to figure 12) The marginal weather in central Kentucky is due to low |
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Definition
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Term
| Which weather chart depicts the conditions forecast to exist at a specific time in the future? |
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Definition
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Term
| The position of fronts and pressure systems (as of chart time) is best determined by referring to a |
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Term
GIVEN:
KPNC 131215 AUTO 33025KT 1/2SM OVC005 00/M03 A2990 RMK A02 SLPNO |
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Definition
| sea level pressure is not available |
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Term
| In what part of the atmosphere does most weather occur? |
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Definition
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Term
| What is a typical characteristic of a stable air mass? |
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Definition
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Term
| (Refer to Figure 13, area B.) What is the top for precipitation of the radar return? |
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Definition
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Term
| (Refer to figure 16) What are the probable weather conditions in the area indicated by arrow B on the Stability Chart? |
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Definition
| Stable air; stratified cloudiness and steady precipitation. |
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Term
| (Refer to Figure 2.) Using the 1400 sounding, does an inversion exist and, if so, at what altitudes? |
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Definition
| Yes; between 10,000 and 13,000 feet. |
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Term
| The most rapid accumulation of clear ice on an aircraft in flight may occur with temperatures between 0°C to -15°C in |
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Definition
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Term
| (Refer to Figure 7.) Determine the wind and temperature aloft forecast for DEN at 9,000 feet. |
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Definition
| 230° true at 21 knots, temperature -4°C. |
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Term
| (Refer to Figure 6.) What is the outlook for the southern half of Indiana after 0700Z? |
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Definition
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Term
| Which is true regarding the development of convective circulation? |
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Definition
| Cool air must sink to force the warm air upward. |
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Term
| 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 |
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Definition
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Term
| A Radar Summary Chart can be very helpful to a pilot because it graphically displays |
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Definition
| the intensity and movement of precipitation. |
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Term
| Which situation would most likely result in freezing rain? |
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Definition
| Rain falling from air which has a temperature of more than 0C into air having a temperature of 0C or less. |
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Term
| Cool air moving over a warm surface is generally characterized by |
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Definition
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Term
| (Refer to Figure 6.) What sky condition and type obstructions to vision are forecast for upper Michigan in the western portions from 0200Z until 0500Z? |
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Definition
| Ceiling becoming 1,000 feet overcast with visibility 3 to 5 statute miles in mist. |
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Term
| (Refer to figure 8) What does this symbol mean on a Surface Analysis Weather Chart? |
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Definition
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Term
| (Refer to Figure 12.) What weather phenomenon is causing IFR conditions in central Oklahoma? |
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Definition
| Low ceilings and visibility. |
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Term
| An altimeter indicates 1,850 ft MSL when set to 30.18. What is the approximate pressure altitude? |
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Definition
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Term
| When flying from a high- to a low-pressure area in the Northern Hemisphere, the wind direction and velocity will be from the |
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Definition
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Term
| What is the expected duration of an individual microburst? |
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Definition
| Seldom longer than 15 minutes from the time the burst strikes the ground until dissipation. |
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Term
| (Refer to figure 3) What is the reported duration of the rain at the time of the observation at KAUS? |
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Definition
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Term
| 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? |
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Definition
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Term
| Density altitude may be determined by correcting |
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Definition
| pressure altitude for nonstandard temperature. |
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Term
| Winds at 5,000 feet AGL on a particular flight are southwesterly while most of the surface winds are southerly. This difference in direction is primarily due to |
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Definition
| friction between the wind and the surface. |
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Term
| A moist, unstable air mass is characterized by |
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Definition
| cumuliform clouds and showery precipitation. |
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Term
| Which statement is true regarding high- or low-pressure systems? |
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Definition
| A low-pressure area or trough is an area of rising air. |
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Term
Consider the following statements regarding an Aviation Routine Weather Report (METAR).
1. A vertical visibility entry does not constitute a ceiling.
2. Fog (FG) can be reported only if the visibility is less than 5/8 mile.
3. The ceiling layer will be designated by a 'C'.
4. Mist (BR) can be reported only if the visibility is 5/8 statute mile.
5. Temperatures reported below zero will be prefixed with a '-'.
6. There is no provision to report partial obscurations.
Select the true statements. |
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Definition
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Term
| An aircraft is flying at a constant power setting and constant indicated altitude. If the outside air temperature (OAT) decreases, true airspeed will |
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Definition
| decrease, and true altitude will decrease. |
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Term
| (Refer to figure 12) The IFR weather in northern Texas is due to |
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Definition
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Term
| (Refer to Figure 11.) On a Weather Depiction Chart, what does this information mean? |
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Definition
| Visibility 2 miles, sky obscured, fog, cloud layer at 20,000 feet. |
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Term
Consider the following air mass characteristics:
1. Cumuliform clouds.
2. Stable lapse rate.
3. Unstable lapse rate.
4. Stratiform clouds and fog.
5. Smooth air (above the friction level) and poor visibility.
6. 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? |
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Definition
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Term
| The most frequent type of ground- or surface-based temperature inversion is that produced by |
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Definition
| terrestrial radiation on a clear, relatively still night. |
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Term
| (Refer to figure 2) At the 0900 sounding and the line plotted from the surface to 10,000 ft, what temperature must exist at the surface for instability to take place between these altitudes? |
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Definition
| Any temperature more than 68F |
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Term
| You may anticipate fog when the temperature-dew point spread is |
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Definition
| 5°F or less and decreasing. |
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Term
| The formation of either predominantly stratiform or predominantly cumuliform clouds is dependent upon the |
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Definition
| stability of the air being lifted. |
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Term
| On a Surface Analysis Weather Chart, isobars are usually spaced at intervals of |
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Definition
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Term
| When soaring in the vicinity of mountain ranges, the greatest potential danger from vertical and rotor-type currents will usually be encountered on the |
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Definition
| leeward side when flying into the wind. |
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