Worcester daily spy. [volume] (Worcester [Mass.]) 1850-1888, 1871-10-06


In the fourth meteorological report by Prof
j. P. Espy, of Washington, D. c., we find the
following instructive CONCENTRATIONS:
/. The rain and snow storms, and even the
moderate rain and SHOWS, travel from the west
towards the east in the United States, during
the months of November, December, January,
February and March, which are the only months
to which these generalizations apply.
.. The storms are accompanied with depres-
sion of the barometer near the central line of
the storm, and rise of the barometer in the
front and rear
3. This central line of minimum pressure is
generally of great length from north to south,
and moves side foremost towards the east.
4. This line is sometimes nearly straight, but
generally curved, and most frequently with its
convex side towards the east.
s. The velocity of this line is such that it
travels from the Mississippi to the Connecticut
river in twenty-fOur hours and from the Con-
necticut-to st. Johns, Newfoundland, in nearly
the same, or about thirty-siX miles an hour
6. When the barometer falls suddenly in the
western part of New England, it rises at the
same time in the valley Of the Mississippi, and
also at St. Johns, Newfoundland
I. In great storms the wind for several hun
bred miles on both sides of the line of minimum
pressure blows toward that line directly or OBJ
liquely.
g. The force of this wind is in proportion to
the suddenncss and greatness of the barometer
8. In all great and sudden depressions of the
barometer there is much rain or snow; and in
all sudden great rains or SHOWS there is a great
depression of the barometer next the center OF
the storm, and rise beyond its borders
10. Many storms are OF great and unknown
length from north 10 south, reaching beyond
our observation on the Cult of Mexico and on
the northern lakes; while their east and west
diameter is comparatively small. These storms
therefore move side foremost
IL. Most storms commence in the "far west"
beyond our western observers, but some COM
mence in the United States.
10 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 east
ward.
10. There is generally lull of wind at the
line OF minimum pressure, and sometimes a
calm.
IA. When the line of minimum pressure pass
es an observer toward the east the wind gener-
any changes tothe west, land the barometer begins
to rise.
10. There is generally but little wind near the
line of the maximum pressure, and on each side
OF that line the winds are irregular, but tend
outward from that line.
16. The fluctuations of the barometer oro
generally greater in the eastern than in the
western part of the United States.
II. Inc fluctuations of the barometer are
generally greater in the northern than in the
southern part OF the United States.
IL. In the northern part of the United States
the wind generally sets in from the north of east
and terminates from the north of west.
10, In the southern parts Of the United States
the wind generally SETS in from the south of
east and terminates from the south of west.
70. During the passage of storms the wind
generally changes from the eastward to the west.
ward by south, especially in the southern parts
Of the United states.
IL The northern part of the storm generally
travels more rapidly toward the east than The
southern part
p. During the high barometer on the day
preceding the storm it is generally clear and
mia IN temperature, especially if very cold
weather preceded.
~ Inc temperature generally falls suddenly
on the passage Of the center of great sto.ms SO
t9at sometimes, when storm is in the middle
vL tue nlted otates, the lowest temperature of
the month will be IN the west on the same dav
that the highest temperature is in the east.
some OF the storms, it is true, are contained