WX 301 Final Test Questions and Verified
Answers
Globally, TS are most common Correct Answer: Over tropical land masses
to get a thunderstorm, we need each of the following three conditions Correct
Answer: Unstable air, a lifting mechanism, and low, level moisture
over tropical oceans, most TS occur Correct Answer: just before dawn
An air mass TS has mostly updrafts and surface flow toward the storm at the
__________ stage Correct Answer: cumulus
TS are most common over Iowa Correct Answer: around sunset
In the US, most thunderstorms occur in____over____ Correct Answer: Summer,
florida
An air mass TS typically lasts Correct Answer: 30-60 minuntes
Near a dissipating air mass TS with precipitation, the horizontal surface air flow
near the TS is tipically Correct Answer: away from the TS
Cumulonimbus literally means Correct Answer: heaped rain producing clouds
when flying at night, the best way to be alerted that severe TS are within 50 miles
of me is Correct Answer: frequent lightning
The outer edge of the expanding cold air below a thunderstorm is called Correct
Answer: the outflow boundry
TS over the desert southwest are most common during Correct Answer: mid-
afternoon
,At the outer edge of the expanding cold air (near a TS) we find the Correct Answer:
gust front
For a multi-cell TS with low level flow from the south, new cells typically form
Correct Answer: south of the mature cell
Severe super cell TS comprise about _____% of all TS Correct Answer: 1%
Severe supercell convection is most common Correct Answer: over the great plains
during late afternoon and evening in April-June
A shelf cloud is Correct Answer: a shelf-like cloud that forms above a gust front in
the updraft south of a multi-cell TS
Compared with air mass TS, multi and supercell TS Correct Answer: have more
vertical shear
what does the supercell have that a multicell storm lacks? Correct Answer: rotation
For a sever supercell TS to form over the great plains, one would expect the 5,000
AGL wind to be Correct Answer: 190/45
Severe convection is most likely when the atmosphere is warm and ____near the
surface and cold and _____dry aloft, with ____vertical wind shear Correct Answer:
moist, dry, strong
Supercell thunderstorms are most conmon Correct Answer: 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 Correct Answer: East
The low-level jet commonly occurs at a level of around______ AGL and is strongest
in the ______ Correct Answer: 5,000ft, evening
, A wall cloud is Correct Answer: a rotating cloud hanging below the main base of a
supercell
In the wind profile of a supercell TS Correct Answer: The DDD gets bigger and the
velocity increases
In a downdraft, cold air descends, hits the ground and spreads out horizontally. The
leading edge of the expanding cold air is called the_________ Correct Answer: out
flow boundry
The flanking line is a line of towering cumulus clouds on the ______ side of a
_______ thunderstorm Correct Answer: south, supercell
A squall line commonly forms Correct Answer: along the dry line east of the cold
front or along the cold front
West of the strongest squall-line precipitation, I would most likely find Correct
Answer: lighter precipitation in a trailing stratiform region
Severe squall-line weather is most commonly found along the____edges of a cold
frontal band Correct Answer: eastern and southern
A Doppler radar measures Correct Answer: precipitation intensity and air speed
to/from the radar
Mesoscale convective complexes form in _____ beneath______ Correct Answer:
July-September, and upper level ridge
Mesoscale convective complexes over the US are most common Correct Answer:
over the great plains in July/August
The most likely vertical wind profile associated with a Mesoscale convective
complex is Correct Answer: moderate southerly at the surface, lighter variable
winds higher up
Tornadoes are most common in (month range) Correct Answer: April to June
Answers
Globally, TS are most common Correct Answer: Over tropical land masses
to get a thunderstorm, we need each of the following three conditions Correct
Answer: Unstable air, a lifting mechanism, and low, level moisture
over tropical oceans, most TS occur Correct Answer: just before dawn
An air mass TS has mostly updrafts and surface flow toward the storm at the
__________ stage Correct Answer: cumulus
TS are most common over Iowa Correct Answer: around sunset
In the US, most thunderstorms occur in____over____ Correct Answer: Summer,
florida
An air mass TS typically lasts Correct Answer: 30-60 minuntes
Near a dissipating air mass TS with precipitation, the horizontal surface air flow
near the TS is tipically Correct Answer: away from the TS
Cumulonimbus literally means Correct Answer: heaped rain producing clouds
when flying at night, the best way to be alerted that severe TS are within 50 miles
of me is Correct Answer: frequent lightning
The outer edge of the expanding cold air below a thunderstorm is called Correct
Answer: the outflow boundry
TS over the desert southwest are most common during Correct Answer: mid-
afternoon
,At the outer edge of the expanding cold air (near a TS) we find the Correct Answer:
gust front
For a multi-cell TS with low level flow from the south, new cells typically form
Correct Answer: south of the mature cell
Severe super cell TS comprise about _____% of all TS Correct Answer: 1%
Severe supercell convection is most common Correct Answer: over the great plains
during late afternoon and evening in April-June
A shelf cloud is Correct Answer: a shelf-like cloud that forms above a gust front in
the updraft south of a multi-cell TS
Compared with air mass TS, multi and supercell TS Correct Answer: have more
vertical shear
what does the supercell have that a multicell storm lacks? Correct Answer: rotation
For a sever supercell TS to form over the great plains, one would expect the 5,000
AGL wind to be Correct Answer: 190/45
Severe convection is most likely when the atmosphere is warm and ____near the
surface and cold and _____dry aloft, with ____vertical wind shear Correct Answer:
moist, dry, strong
Supercell thunderstorms are most conmon Correct Answer: 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 Correct Answer: East
The low-level jet commonly occurs at a level of around______ AGL and is strongest
in the ______ Correct Answer: 5,000ft, evening
, A wall cloud is Correct Answer: a rotating cloud hanging below the main base of a
supercell
In the wind profile of a supercell TS Correct Answer: The DDD gets bigger and the
velocity increases
In a downdraft, cold air descends, hits the ground and spreads out horizontally. The
leading edge of the expanding cold air is called the_________ Correct Answer: out
flow boundry
The flanking line is a line of towering cumulus clouds on the ______ side of a
_______ thunderstorm Correct Answer: south, supercell
A squall line commonly forms Correct Answer: along the dry line east of the cold
front or along the cold front
West of the strongest squall-line precipitation, I would most likely find Correct
Answer: lighter precipitation in a trailing stratiform region
Severe squall-line weather is most commonly found along the____edges of a cold
frontal band Correct Answer: eastern and southern
A Doppler radar measures Correct Answer: precipitation intensity and air speed
to/from the radar
Mesoscale convective complexes form in _____ beneath______ Correct Answer:
July-September, and upper level ridge
Mesoscale convective complexes over the US are most common Correct Answer:
over the great plains in July/August
The most likely vertical wind profile associated with a Mesoscale convective
complex is Correct Answer: moderate southerly at the surface, lighter variable
winds higher up
Tornadoes are most common in (month range) Correct Answer: April to June
