Module 11 - ATC System Questions and Answers

Module 11 - ATC System Questions and Answers Sky coverage is determined by diving the sky into eight equal parts called okta What does 22015G25KT indicate in a METAR report? Wind from the southwest at 15 knots, gusting to 25 knots What is the standard atmospheric lapse rate (celsius)? 2 degrees per thousand feet When was a METAR with a Date/Time Group of 011955Z issued? On the 1st day of the month at 1955Z The necessary ingredients for the formation of precipitation are -water vapor (moist air) -a lifting action -a growth process What are the three basic cloud types? Cirriform, Cumuliform and Stratiform What is the correct ICAO designator for an airport within the conterminous US? K What is the program under which Air Traffic Controllers operate as limited or cooperative weather observers? LAWRS The turbulence intensity classifications are -moderate -extreme -severe -light The temperature-dew point spread is important to pilots and air traffic controllers because it can indicate the likelihood of precipitation and reduced visibility due to mist or fog Cumulus clouds are: indicative of vertical air movement The icing intensity classifications are -trace -moderate -severe -light What does the reported ceiling represent to a weather observer? The limit to visible sky observations and cloud layers as seen from the gorund Within which layer of the atmosphere does all significant weather and the vast majority of atmospheric mass reside? Troposhpere If weather observations are made from direct observation or from uncertified instruments, what word must you prefix the measurement values with? Estimated Which of these is not a hazardous effect of thunderstorms? magnetic deviations Which of the following is not a possible temperature / dewpoint spread? 18/19