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SURFACE ANALYSIS LAB WX 301 EXAM
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SURFACE ANALYSIS LAB WX 301 EXAMThe following is the surface weather map for Dec. 22 at 12Z. - ANSWER
Stationary Front
What weather feature is located just north of "B" in Canada at the top of the chart
of the previous
question? - ANSWER High-Pressure Center
What weather feature in question 1 is located at "C" and extends from Ohio to
Texas? - ANSWER Cold Front
What weather feature on the following surface chart is located at D extending
through Alabama? - ANSWER Squall Line
What is the weather feature located to the immediate northwest of "E" in Ohio in
the previous
question? - ANSWER Low-Pressure Center
What weather feature, extending from Ohio to New York, is located at "F" on the
surface chart of
questions 1 & 4? - ANSWER Warm Front
The following shows feature F from the previous question in more detail: -
ANSWER Between 20 and 35 F.
What approximate range of temperatures is to the south of feature F (from the front
to around
the south end of the dark line in Pennsylvania)? - ANSWER Between 50 and 65 F.
Generally what direction are the winds to the north of feature "F" near the extreme
top of the
black line? - ANSWER In the range from 360 to 090.
, Generally what direction are the winds to the south of feature "F" near the bottom
of the black
line? - ANSWER In the range from 180 to 270
As you move from south to north following along the black line, how do the winds
change in
terms of direction? - ANSWER They shift cyclonically from
southerly/southwesterly to easterly/northeasterly.
Generally, what are the range of dew point temperatures to the north of the frontal
feature "F"? - ANSWER 32 F and below.
Generally what are the dew point temperatures south of the frontal feature "F". -
ANSWER generally above 50 degrees F.
How is the moisture content of the air changing as you move from south to north
across the
black line? Here we are interested in the actual moisture content, not how close the
stations are
to saturation (two different quantities). For actual moisture, examine the dew point
value itself.
For proximity to saturation you would examine how close the temperature is to the
dew point
temperature. - ANSWER The moisture content decreases significantly as you
follow the line from south to north.
Look at the air temperatures and dew point temperatures to the north in Canada
(region around
A), in the eastern US (region around B, i.e. the warm sector), and in the Central
Great Plains
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