The new air world : $b The science of meteorology simplifiedMoore, Willis L. (Willis Luther)
Science
The new air world : $b The science of meteorology simplified
Moore, Willis L. (Willis Luther)
Meteorology
=Danger to Atlantic Coast Summer Resorts.= The writer frequently
has been asked as to the possibilities of a populous Atlantic coast
resort being submerged by the waters driven inshore by a hurricane,
or being lifted up in the center of the storm as the result of
decreased air pressure inside the cyclonic whirl. The answer is that
such a catastrophe is possible to any Atlantic coast city (more
especially those south of Norfolk) that is not protected by a heavy
breakwater of ten to twenty feet above sea level, and whose building
foundations and walls are not of brick or concrete for at least ten
feet above the water level. It would be necessary for a West Indian
hurricane of unusual intensity—one similar to that which wrecked
Galveston—to be considerably deflected westward out of its normal
track in order to hit one of our coast cities north of Chesapeake Bay
so that the center of the storm would pass over it, or near enough to
cause destruction. In Galveston there was little damage to strongly
constructed buildings of brick or stone.
=The Breaking of Droughts.= It is most important for the forecaster
to know when and how droughts may be broken. He will observe that
when the great cereal plains are famishing for moisture the Lows
all originate on the middle or north Rocky Mountain plateau, in the
region of Colorado or Montana, and that the drought continues until
the Lows begin to form in the extreme southwest—in Arizona, New
Mexico, or Texas. As previously stated such Lows always bring rain as
they move northeastward.
=Warm Waves.= There come in summer periods of almost stagnation in
the drift of the Highs and the Lows across the continent. At such
times if a High be centered in the South Atlantic Ocean, with its
center at Bermuda, and its western limits extending into the South
Atlantic coast States, there will result what is popularly known as
a warm wave, for the air will slowly and steadily move from the
southeast, where the pressure is greater, towards the northwest,
where it is less; it will receive constant accretions of heat
from the radiating surface of the earth, and finally attain to a
temperature that is extremely uncomfortable to all forms of life,
that lowers the physical stamina, and that largely increases the
death rate. This superheated condition of the lower stratum of air
in which we live continues until a Low develops in the southwest and
a High in the northwest, which relation, as we already know, soon
brings rainfall to the interior of the country.
=V-shaped Lows= are reasonably sure to cause precipitation, and
if the barometer at the center of the Low be five to seven tenths
below the outer limits of the depression, heavy precipitation and
destructive local storms may be expected.
Public-domain text, read in full here on John Shaqi.
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