WX301 Aviation Weather Test 3
Questions and Answers 100% Pass
Globally, TS are most common - ✔✔over tropical land masses
To get a thunderstorm, we need each of the following three conditions - ✔✔unstable air,
a lifting mechanism and low-level moisture
Over tropical oceans, most TS occur - ✔✔just before dawn
An airmass thunderstorm has mostly updrafts and surface flow toward the storm at the
__ stage - ✔✔cumulus
Thunderstorms are most common over Iowa - ✔✔around sunset
In the US, most thunderstorms occur in __ over __ - ✔✔summer, Florida
An air mass thunderstorm typically lasts - ✔✔30-60 minutes
Near a dissipating air mass TS with precipitation, the horizontal surface air flow near
the TS is typically - ✔✔away from the TS
Cumulonimbus literally means - ✔✔heaped rain-producing clouds
When flying at night, the best way to be alerted that severe TS are within 50 miles of me
is (hint - use your common sense) - ✔✔frequent lightning
TS over the desert southwest are most common during. - ✔✔mid-afternoon
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 1
, The outer edge of the expanding cold air below a thunderstorms is called - ✔✔the
outflow boundary
At the outer edge of the expanding cold air we find the - ✔✔gust front
For a multi-cell TS with low-level flow from the south, new cells typically form. -
✔✔south of the mature cell
Severe supercell TS comprise about ___% of all TS. - ✔✔1
Severe supercell convection is most common - ✔✔over the Great Plains during late
afternoon and evening in April-June
A shelf cloud is - ✔✔a shelf-like cloud that forms above the gust front in the updraft
south of a multi-cell TS
Compared with airmass TS, multi and supercell TS - ✔✔have more vertical shear
What does the supercell have that a multicell storm lacks? - ✔✔rotation
Severe convection is most likely when the atmosphere is warm and ___ near the surface
and cold and ___ aloft, with ___ vertical wind shear - ✔✔moist, dry, strong
Supercell thunderstorms are most common - ✔✔in the warm sector, east of the cold
front
A supercell storm is embedded in an average tropospheric flow from 230 The storm will
move to the - ✔✔the east
The low-level jet commonly occurs at a level of around ___ AGL and is strongest in the
___ - ✔✔5,000 ft, evening
A wall cloud is - ✔✔a rotating cloud hanging below the main base of a supercell
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 2
Questions and Answers 100% Pass
Globally, TS are most common - ✔✔over tropical land masses
To get a thunderstorm, we need each of the following three conditions - ✔✔unstable air,
a lifting mechanism and low-level moisture
Over tropical oceans, most TS occur - ✔✔just before dawn
An airmass thunderstorm has mostly updrafts and surface flow toward the storm at the
__ stage - ✔✔cumulus
Thunderstorms are most common over Iowa - ✔✔around sunset
In the US, most thunderstorms occur in __ over __ - ✔✔summer, Florida
An air mass thunderstorm typically lasts - ✔✔30-60 minutes
Near a dissipating air mass TS with precipitation, the horizontal surface air flow near
the TS is typically - ✔✔away from the TS
Cumulonimbus literally means - ✔✔heaped rain-producing clouds
When flying at night, the best way to be alerted that severe TS are within 50 miles of me
is (hint - use your common sense) - ✔✔frequent lightning
TS over the desert southwest are most common during. - ✔✔mid-afternoon
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 1
, The outer edge of the expanding cold air below a thunderstorms is called - ✔✔the
outflow boundary
At the outer edge of the expanding cold air we find the - ✔✔gust front
For a multi-cell TS with low-level flow from the south, new cells typically form. -
✔✔south of the mature cell
Severe supercell TS comprise about ___% of all TS. - ✔✔1
Severe supercell convection is most common - ✔✔over the Great Plains during late
afternoon and evening in April-June
A shelf cloud is - ✔✔a shelf-like cloud that forms above the gust front in the updraft
south of a multi-cell TS
Compared with airmass TS, multi and supercell TS - ✔✔have more vertical shear
What does the supercell have that a multicell storm lacks? - ✔✔rotation
Severe convection is most likely when the atmosphere is warm and ___ near the surface
and cold and ___ aloft, with ___ vertical wind shear - ✔✔moist, dry, strong
Supercell thunderstorms are most common - ✔✔in the warm sector, east of the cold
front
A supercell storm is embedded in an average tropospheric flow from 230 The storm will
move to the - ✔✔the east
The low-level jet commonly occurs at a level of around ___ AGL and is strongest in the
___ - ✔✔5,000 ft, evening
A wall cloud is - ✔✔a rotating cloud hanging below the main base of a supercell
COPYRIGHT © 2025 BY BRITTIE DONALD, ALL RIGHTS RESERVED 2
