1w071n-02 CDC Volume 3

90 Questions | Total Attempts: 128

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CDC Quizzes & Trivia

Up to date CDC quiz for 1W071A-02 Vol 3 (as of 13 FEB 13)


Questions and Answers
  • 1. 
    Aside from the Air Force Operational Weather Squadrons (OWS), what agency produces discussions on model output?
    • A. 

      Joint Army Air Force Weather Information Network.

    • B. 

      Air Force Weather Agency.

    • C. 

      National Weather Service.

    • D. 

      Air Weather Service.

  • 2. 
    What areas do Storm Prediction Center advisory charts outline?
    • A. 

      Areas of expected crosswinds.

    • B. 

      Areas of expected severe weather.

    • C. 

      Areas of frequent crosswind occurrence.

    • D. 

      Areas of frequent severe weather occurrence.

  • 3. 
    What do you physically compare the 00-hour forecast with during the initialization step of the verification, initialization and verification (VIV) process?
    • A. 

      Analysis.

    • B. 

      12-hour forecast.

    • C. 

      24-hour forecast.

    • D. 

      Previous 12-hour forecast.

  • 4. 
    What action is the final step of the verification, initialization and verification process?
    • A. 

      Verify the 00-hour forecast with your current analysis.

    • B. 

      Verify the 12-hour forecast with real-time data for the same time.

    • C. 

      Verify the previous 12-hour forecast with the current 12-hour forecast.

    • D. 

      Verify the previous 12-hour forecast against the current 00-hour forecast.

  • 5. 
    What initial conditions are models used based upon?
    • A. 

      Standard atmospheric conditions.

    • B. 

      Previously forecasted conditions.

    • C. 

      Current weather observations.

    • D. 

      Model of choice conditions.

  • 6. 
    What action is the goal of severe weather analysis?
    • A. 

      Identify the preconditions that allow storms to become severe.

    • B. 

      Identify the different types of severe thunderstorms.

    • C. 

      Determine the rear-flank downdraft wind direction.

    • D. 

      Determine the mid-level wind speed and direction.

  • 7. 
    How many minutes do single-cell storms typically last?
    • A. 

      20 to 30.

    • B. 

      20 to 40.

    • C. 

      30 to 45.

    • D. 

      30 to 60.

  • 8. 
    Which characteristic is not one of the single-cell thunderstorm?
    • A. 

      Storm motion equal to the mean wind in the lowest 5km to 7km.

    • B. 

      Weak vertical and horizontal wind shear.

    • C. 

      High winds and hail.

    • D. 

      Frequent tornadoes.

  • 9. 
    Where do multi-cell storms typically regenerate?
    • A. 

      Along the gust front.

    • B. 

      The rear-flank downdraft.

    • C. 

      East of the westernmost cell.

    • D. 

      North of the 700mb wind maximum.

  • 10. 
    Which characteristic is not one of multi-cell thunderstorms?
    • A. 

      Weak directional shear in the lower levels.

    • B. 

      Straight-line or unidirectional profile.

    • C. 

      Large hail near downdraft centers.

    • D. 

      Short-duration tornadoes.

  • 11. 
    Which thunderstorm is not a type of supercell thunderstorm?
    • A. 

      Classic.

    • B. 

      High precipitation.

    • C. 

      Low precipitation.

    • D. 

      Moderate precipitation.

  • 12. 
    What size hail do classic supercell thunderstorms typically produce?
    • A. 

      Marble.

    • B. 

      Softball.

    • C. 

      Golf ball.

    • D. 

      Baseball.

  • 13. 
    Which type of supercell thunderstorm is most commonly found along the dry line of west Texas?
    • A. 

      Moderate-precipitation.

    • B. 

      High-precipitation.

    • C. 

      Low-precipitation.

    • D. 

      Classic.

  • 14. 
    Which region is not a primary source for airmasses?
    • A. 

      Arctic.

    • B. 

      Tropical.

    • C. 

      Equatorial.

    • D. 

      Temperate.

  • 15. 
    What letter or symbol is appended to the label of a modifying airmass that is cooler than the ground below?
    • A. 

      Plus symbol.

    • B. 

      Lower case c.

    • C. 

      Lower case k.

    • D. 

      Minus symbol.

  • 16. 
    Where is the geographic area known as the “Great Plains” located?
    • A. 

      West of the Rocky Mountains.

    • B. 

      East of the Appalachian Mountains.

    • C. 

      Between the Mississippi River and the Rocky Mountains.

    • D. 

      Between the Appalachian Mountains and the Missouri River.

  • 17. 
    In what tornado-producing airmass do tornadoes most frequently occur in families, with paths that are commonly long and wide?
    • A. 

      Type II, Gulf Coast type.

    • B. 

      Type I, Great Plains type.

    • C. 

      Type III, Pacific Coast type.

    • D. 

      Type IV, Inverted ā€œVā€ type.

  • 18. 
    What factor is evident above the inversion with a Type I airmass?
    • A. 

      Moisture increase.

    • B. 

      Rapid drying.

    • C. 

      Condensation.

    • D. 

      Turbulence.

  • 19. 
    Which type of airmass is tropical in origin and generally warm and moist?
    • A. 

      Type I Great Plains.

    • B. 

      Type II Gulf Coast.

    • C. 

      Type III Pacific Coast.

    • D. 

      Type IV Inverted V.

  • 20. 
    Which type of airmass has cold air at all levels?
    • A. 

      Type I Great Plains.

    • B. 

      Type II Gulf Coast.

    • C. 

      Type III Pacific Coast.

    • D. 

      Type IV Inverted V.

  • 21. 
    Which air mass is cold with surface temperatures ranging from 50°F to 68°F, the relative humidity commonly exceeding 70 percent at all levels up to at least 500mb, and average windspeeds of 15 knots at 850mb and 50 knots at 500mb?
    • A. 

      Type II Gulf Coast.

    • B. 

      Type I Great Plains.

    • C. 

      Type III Pacific Coast.

    • D. 

      Type IV Inverted V.

  • 22. 
    Which type of airmass features maritime polar air overrunning continental tropical air between 5,000 and 8,000 feet above the surface?
    • A. 

      Type II Gulf Coast.

    • B. 

      Type I Great Plains.

    • C. 

      Type IV Inverted V.

    • D. 

      Type III Pacific Coast.

  • 23. 
    What kind of dew-point temperature difference should exist across a dry line?
    • A. 

      < 10o F degrees.

    • B. 

      > 10oF degrees.

    • C. 

      < 10oC degrees.

    • D. 

      > 10oC degrees.

  • 24. 
    What severe weather synoptic pattern’s airmass is typically Type III?
    • A. 

      Type C, overrunning.

    • B. 

      Type D, cold core.

    • C. 

      Type A, dry line.

    • D. 

      Type B, frontal.

  • 25. 
    When does the maximum severe activity occur with a major cyclone?
    • A. 

      A few hours after sunrise to maximum heating.

    • B. 

      From time of maximum heating to a few hours after sunset.

    • C. 

      Just before and after maximum heating.

    • D. 

      Only during maximum heating.

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