The Fremont weekly journal. [volume] (Fremont, Sandusky County, Ohio) 1867-1877, 1872-11-29
Facts about Storms.

A vast amount OF information is
constantly being gathered and col
lected by the United States Signal
Service respecting storms, out of
which is being gradually built up
the true science of that class of me-
neurological phenomena. Among
the general observations thus far no.
ted may be mentioned the following:
Storms are accompanied with a
depression of the barometer near the
central line of the storm, and rise
of the barometer il the front and
rear.
This central line of minimum pres
sure is general is generally of great
length from north to south, and
moves side foremost toward the sea.
This line is sometimes nearly
straight but generally curved, and
most frequently with its convex side
toward the east.
The velocity Of this line is such
that it travels from the Mississippi
to the Connecticut river in about
tWenty-four hours, and from the
Connecticut to st. John, Newfound-
land, in nearly the same time, or
about thirtv-six miles an hour.
When the barometer falls sudden
ly in the western part of New Eng
land, it rises at the same time in the
Valley of the Mississippi, and also
at St. John, Newfoundland.
In great storms the wind for sew
eral hundred miles on both sides of
the line Of minimum pressure blows
toward that line directly or OBJ
liquely.
The force of the wind is in pro-
portion to the suddenness and great
ness Of the depression of the bar
ometer.
In all great and sudden depression
of the barometer there is much rain
or snow; and in all sudden great rains
or snow there is a great depression
of the barometer near the center of
the storm, and rise beyond its bor-
ders.
Many storms are of great and un-
known length from north to south,
reaching beyond our observatories on
the Gulf of Mexico and on the North
ern Lakes, while their east and west
diameter is comparatively small.
The storms, therefore, moUe side
foremost.
Most storms commence in the star
West" beyond our most Western
observers, but some commence in
the United States.
During the passage of storms the
wind generally changes from the
Eastward to the Westward by the
South, especially in the Southern
part of the United States.
The Northern part Of the storm
generally travels more rapidly tow
ard the East than the Southern part.
During the high barometer of the
day proceeding the storm it is gen
orally clear and mild in temperature,
especially if very ouid.
The temperature generally falls
suddenly on the passage of the cen
ter of great storms; and sometimes,
when a storm is in the middle of the
United States, the lowest tempera-
ture of the month will be in the
West on the same day that the high
est temperature is in the East.
The first of the principles upon
which the Signal Corps proceeds is,
that the invariable course of air cur
rents is such as will equalize the at
pressure upon the earth's
surface, and that whenever inequai-
ties exist the winds are set in mo-
tiOn, the air thus finding its level
just as water or any other visible
fluid does.
When a storm commences in the
United States the line of minimum
pressure does not come from the "far
West" but commences with the
storm, and travels with it toward the
There is generally lull of wind
at the line Of minimum pressure, and
sometimes a calm.
When this line of minimum pres
sure passes an observer towards the
East, the wind generally soon chang