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Weather- Exam 3

Terms in this set (18)

Characteristics of an air mass source region include...
physically uniform surface
Commonly referred to in our weather forecasts as "Arctic Blasts", the Arctic ocean is the source region for...
cA air masses
This air mass commonly influences winter weather along the Pacific NW coast
mP
Air mass associated with very warm, dry weather that contributes to drought
cT
mP air masses from the N.Pacific tend to be unstable in winter because...
they converge with colder, more dense air along the polar front
Controls the flow of mT air from the Pacific ocean over the US West coast
Subtropical High Pressure
A cold front typically forms at the boundary of...
Polar air mass advancing on a retreating warm air mass
____ front forms b/t 2 unlike air masses moving parallel
Stationary
A warm front marks the advancing edge of an ____ air mass
mT
General wind direction in the N.Hemisphere associated with airflow being an MLC's warm front...
Southerly
Fronts present during occluded stage of MLC development...
Warm, cold, occluded
US location with the most thunderstorms
Florida
Only updrafts are present during the ___ stage of an air mass thunderstorm
Cumulus
____ develop out of a cluster of afternoon air mass thunderstorms
Mesoscale Convective Complexes (MCC)
Supercells, squall lines, and tornadoes tend to form ahead of ____ fronts
Cold
A ____ is the leading edge of thunderstorms downdraft
Gust front
A ____ forms when a mesocyclone protrudes from the base of a supercell thunderstorm
Wall cloud
Tornadoes rarely develop...
ahead of warm fronts
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