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Meteorology Practice Test — Medium Level

A free 10-question Meteorology practice test for Science Olympiad, written at regional and state level. Every question and answer choice is listed below — correct answers and scoring are revealed when you take the timed test.

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1. A morning weather balloon sounding over a Midwestern city shows a very moist boundary layer, a strong temperature inversion just above the surface, and extremely steep lapse rates (very cold air aloft) above the inversion, with strong winds increasing and veering (turning clockwise) with height. By mid-afternoon, surface temperatures are forecast to break the cap (erode the inversion). Which severe weather outcome is most consistent with this profile?

  • A.A) Widespread non-severe showers with little lightning due to weak instability and strong shear
  • B.B) Pulse-type single-cell thunderstorms that form briefly and collapse with minimal organization
  • C.C) Supercell thunderstorms capable of large hail and tornadoes due to strong instability and vertical wind shear
  • D.D) Primarily freezing rain and sleet due to the presence of an elevated warm layer above the surface

2. You are watching real-time radar of a summer thunderstorm. At 3:00 PM the storm first appears as a small area of weak reflectivity with only updrafts observed on dual-polarization and velocity products. By 3:20 PM the reflectivity core rapidly intensifies, a strong rear-flank downdraft develops, and the storm top overshoots well into the upper troposphere. By 4:00 PM, the reflectivity weakens and the storm’s anvil spreads downwind with mainly light rain. Which sequence correctly matches the thunderstorm life-cycle stages to these times?

  • A.A) 3:00 PM cumulus stage, 3:20 PM mature stage, 4:00 PM dissipating stage
  • B.B) 3:00 PM mature stage, 3:20 PM dissipating stage, 4:00 PM cumulus stage
  • C.C) 3:00 PM dissipating stage, 3:20 PM cumulus stage, 4:00 PM mature stage
  • D.D) 3:00 PM cumulus stage, 3:20 PM dissipating stage, 4:00 PM mature stage

3. A Doppler weather radar image of a severe storm shows a classic hook echo on reflectivity and, on the velocity product, adjacent inbound and outbound velocity pixels (a tight couplet) at low levels. The storm is embedded in a line but stands out as more isolated and intense than the others. Which interpretation is most accurate?

  • A.A) The storm is producing large hail, but the velocity couplet rules out a tornado threat
  • B.B) The hook echo and velocity couplet suggest a possible tornadic supercell, and a tornado warning may be justified
  • C.C) The pattern is typical of ordinary multicell thunderstorms and usually indicates only heavy rain
  • D.D) The velocity couplet indicates only strong straight-line winds and is unrelated to tornado potential

4. A developing tropical disturbance is observed over the Atlantic Ocean. Sea-surface temperatures are 28 °C, mid-level humidity is high, and the disturbance is located at 15°N. Forecast models show wind speeds increasing rapidly with height and changing direction sharply between 850 mb and 200 mb. Which factor is most likely to prevent this system from intensifying into a strong hurricane?

  • A.A) Sea-surface temperatures are below the minimum threshold needed for tropical cyclone development
  • B.B) The disturbance is too close to the equator for the Coriolis effect to organize rotation
  • C.C) High vertical wind shear will disrupt the storm’s vertical structure and weaken its convection
  • D.D) Mid-level humidity is too low to support deep convection around the center

5. It is a spring afternoon in the central United States. The Storm Prediction Center has issued a Tornado Watch for your area until 9 PM. At 5:30 PM, local radar shows a strong supercell with a hook echo approaching your town, and the National Weather Service issues a Tornado Warning for your county. Sirens sound. What is the most appropriate interpretation and response?

  • A.A) The watch means a tornado is occurring; the warning only advises to monitor weather, so outdoor activities can continue
  • B.B) The warning means a tornado is imminent or occurring; you should immediately move to an interior room on the lowest floor
  • C.C) The watch and warning both indicate that a tornado has been confirmed by spotters, so evacuation by car is recommended
  • D.D) The watch overrides the warning, so you only need to be generally aware and ready to act if conditions worsen later

6. You are outside when you see a lightning flash. You count 15 seconds until you hear the thunder. Using the commonly used rule of thumb for severe weather safety, approximately how far away was the lightning strike?

  • A.A) About 1 mile (≈1.6 km) away
  • B.B) About 3 miles (≈5 km) away
  • C.C) About 5 miles (≈8 km) away
  • D.D) About 10 miles (≈16 km) away

7. A surface weather map at 00Z shows the following over the central U.S.: (1) A strong bow-shaped line of radar reflectivity oriented north–south, moving rapidly east. (2) A large area of very warm, humid air ahead of the line. (3) Isobars packed tightly together just behind the bow, associated with a strong pressure gradient. Which severe weather hazard is most likely along and just behind the bowing segment?

  • A.A) Widespread straight-line wind damage associated with a derecho
  • B.B) Mainly heavy, wet snow with low wind speeds
  • C.C) Large-area freezing rain accumulation due to a shallow cold layer at the surface
  • D.D) Isolated weak pulse thunderstorms with brief, small hail

8. A National Weather Service forecast for a northern U.S. state describes an approaching winter storm: sustained winds of 40 mph with higher gusts, heavy snow reducing visibility to 1/8 mile, and these conditions expected to last at least 4 hours. Temperatures are below freezing and will remain so. Which hazard headline best matches this situation?

  • A.A) Winter Weather Advisory, because winds are strong but visibility is not affected
  • B.B) Blizzard Warning, because strong winds and very low visibility will persist for several hours
  • C.C) Ice Storm Warning, because any winter storm with strong winds is classified as an ice storm
  • D.D) Wind Chill Advisory, because strong winds are the primary concern regardless of visibility

9. Cold, dry Arctic air flows over a relatively warm, unfrozen Great Lake in late November. A city is located on the eastern shore of the lake. Which wind direction at the surface would most strongly favor heavy lake-effect snow in that city?

  • A.A) Westerly winds (blowing from west to east) across the full length of the lake toward the city
  • B.B) Easterly winds (blowing from east to west) carrying air from the land out over the lake
  • C.C) Northerly winds (blowing from north to south) parallel to the shoreline, minimizing lake crossing
  • D.D) Calm winds, so that the cold air sits over the lake without moving toward the city

10. A station model on a surface map shows: temperature 22 °C, dew point 21 °C, nearly overcast cloud cover, a south wind at 15 knots, and a sea-level pressure of 1006 mb near a surface low. The location is ahead of an approaching cold front in midsummer. Which type of weather is most likely in the next few hours?

  • A.A) Clearing skies and falling humidity as high pressure builds in from the north
  • B.B) Development of fog due to radiational cooling under calm, clear conditions
  • C.C) Scattered afternoon thunderstorms, some possibly severe, due to warm, moist, unstable air near a low-pressure system
  • D.D) Steady light snow developing as warm air overruns a shallow surface cold layer

Questions are AI-generated for Meteorology practice and can contain mistakes — check answers against reliable sources. Take the timed version to see correct answers, scoring, and explanations: start the Meteorology test.