The main reason for frontal weather is - ANSWER The warm air is lifted up by the cold air
The frontal inversion of any front always ascepts over the (warm / cold) air and the
precipitation associated with it usually occurs in the (warm / cold) air - ANSWER COLD
COLD
The kind of air masses that are usually involved with fronts in USA are _______ and _____
- ANSWER Polar
Tropical
All fronts have temperature inversions (T/F) - ANSWER True
What four discontinuities (differences) must be present for the meteorologist to draw a
frontal symbol on the weather chart? - ANSWER Temperature change
Dewpoint change
Pressure change
Wind shifts
Define a cold front - ANSWER Leading edge of an advancing mass of cold air
The average speed of a cold front is about ______ knots and the average slope is
_____________ - ANSWER 25-35 knots
steep with a ratio of 1:80
Cold fronts are usually associated with ____ clouds which tend to produce a ____ area of
clouds and precipitation - ANSWER Cumuliform
, narrow-band
In which direction does a cold front move? - ANSWER SE
The surface wind behind the cold is generally ____ and the surface wind ahead of the
cold front is typically ____ - ANSWER NW
SW
A strong line of thunderstorms, with destructive winds, possible hail and CB clouds, are
called ____ _____. They may form ahead of - (slow / fast) moving cold fronts - ANSWER
Squall lines
Fast
What is the flight procedure in the vicinity of a cold front? - ANSWER Land and wait
define warm front - ANSWER The trailing edge of a retreating mass of cold air, with
warm air moving in behind the frontal symbol
The average slope of the warm front has a ratio of ___________, and always slopes over
the _________ air mass. - ANSWER 1:200
cold
Warm fronts normally move TO the ______ - ANSWER NE
The surface wind behind a warm front generally blows FROM the _______ (direction) and
the surface wind ahead of the warm front is usually FROM the ______ (direction) -
ANSWER SW
SE
What kind of weather is typically associated with a stable warm front? - ANSWER A large
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