Aviation Weather Final Exam 2023

Super cell Thunder Storm - ANSWER A large thunderstorm with a single violent updraft that can maintain itself for many hours. Gust Front - ANSWER The leading edge of a thunderstorm cold downdraft. Mesoscale convective Complex - ANSWER Individual Thunderstorms that organize into large, circular, long-lasting system. Attenuation - ANSWER The process that weakens radar signals Foehn - ANSWER Another name for Chinook Wind Katabatibc - ANSWER Another name for Chinook Wind Entrainment - ANSWER Strengthens Precipitation-induced downdraft Haboob - ANSWER A windstorm composed of dust and sand that forms along the leading edge of a gust front Lifted Index - ANSWER Difference in temperature between a parcel of air lifted to 500mb and the temperature at 500mb Convective Sigmet - ANSWER Weather forecast associated with severe thunderstorms T or F In a severe thunderstorm, hail may actually fall from the base of the anvil. - ANSWER T T or F Radar is a good resource for determining cloud bases and tops across a region. - ANSWER F T or F A sea breeze is an example of macroscale winds - ANSWER F T or F All tornados rotate counter clockwise - ANSWER F T or F Anabatic winds are another name for downslope winds - ANSWER F T or F Thunder only happens when it is raining - ANSWER F T or F mountain waves require the movement of stable air across a mountain range. - ANSWER TT or F all thunder storms require rising air - ANSWER T T or F Surface winds will veer with the passage of a cold/or warm front. - ANSWER T T or F If a temp inversion is encountered immediately after takeoff, a potential hazard exists due to wind shear. - ANSWER T The flat base of a cumulus cloud begin to appear at an altitude known as the - ANSWER Convective Condensation level AN updraft in a severe thunderstorm that penetrates up into the tropopause and stratosphere is said to be an - ANSWER Overshooting top An aircraft the encounters a headwind of 45 knots during a microburst can expect a total wind shear of ________ Knots across the microburst - ANSWER 90 - simply double the number Cumulus clouds begin in the boundary layer as dry collective cells known as - ANSWER Thermals The altitude where the updraft temperature is equal to the temperature of its surrounding is known as the _______level - ANSWER Equilibrium Downslope winds warm by the process of - ANSWER Compression heating or Adiabatic heating When do thunderstorms reach their greatest intensity - ANSWER Mature Stage A pilot can expect a wind shear zone in a surface-based temp inversion whenever the wind speed at 2,000 to 4,000 feet above the surface is at least how many knots? - ANSWER 25 Shelf cloud - ANSWER often indicates the rising air over the gust front. A servere thunderstorm can generate what?