fronts Flashcards
(24 cards)
what are the characteristics of a warm front
wimpy, slow, gentle rain before the front. warm and humid
what are the charecteristics of a cold front
violent, heavy rain, towards the front. cold and dry
where does precipitation happen for the cold front
precipitation happens AT the front, ( on the line of front) and is violent and heavy
at what rate does weather change in cold fronts
very quickly
where does precipitation happen for the warm front
precipitation happens before the front
at what rate does weather change in warm fronts
ver slowly
what happens during a cold front
cold dense air mass approaches a light, slow moving air mass ( cP to mP) , the heavy cold air forces the warm air to rise very quickly. the rising air gets RECCD into clouds
what is the last thing that happens during a cold front
the rapidly rising air produces a short period of heavy precipitation right along the cold front
is the cold front steep or gentle
steep
is the warm front steep or gentle
gentle
what happens during a warm front
the warm air (mT) always rises over colder air (cP), then the less dense, warm air rises up the back of the cold air. air rises gradually then gets RECCD into clouds
what weather does the warm front bring
a long period of precipitation before the front
what is it called when a warm front and a cold front meet up
mid- latitude- cyclone
what kind of precipitation does a mid- latitude- cyclone produce
A LOT of precipitation
what causes an occluded front
the fats cold front overtakes the slower warm front and they “zip together”
what weather does an occluded front bring
blizzards and torrential rains
what causes a stationary front?
when the warm front and cold front are on a “head on collision” the movement stops
what weather does a stationary front bring
long lasting cloudy, wet weather such as rain or snow
what is orographic lifting
when mountains force air upward
characteristics of the windward side
wet, west and expansional cooling
characteristics of the leeward side
dry, east, and expansional heating
what happens to the air on the windward side
gets RECCD
what happens to the air on the leeward side
gets SCWD, sinking, compressing, warming, dry
how do clouds form
they get RECCD