Semi-weekly south Kentuckian. [volume] (Hopkinsville, Ky.) 1883-1889, 1886-04-09

Mimi; Omaha, Neb.; Chicago, ILL.,;
St Louis Mo-; Shreveport, La; Gal.
weston, Tex; Nashville, Tenn. Bnhalo,
NY; New Orleans, La, Jacksonville,
Fla; Boston, Mass, and Washington,
d. c.
About fifteen per cent. Of the cold
waves observed come from the Pacific
coast and eighty-five per cent. origi-
mated east of the Rocky mountains, or
came down the east side of these mount
aims from the British Northwest Terri
tory. All of the cold waves traced out
during these six months in each year,
appeared first at Helena, Mont, except
five, which five were felt at Bismarck,
d. T., before being felt at Helena; and
we must conclude, says Lieutenant
Woodruff, that they have their origin
in the vast regions of ice and snow
near the Arctic circle, far to the north
of the observing stations. With re-
spect to the time of day of the appear
ance of cold waves in the Northwest,
it is found that there is no absolute rule
and that they are quite independent
of the diurnal changes of temperature
due to the alienation of day and night
Forty made their liSst appearance upon
the three p. nj, Washington time)
temperature charts, which in the North
west corresponds to about the warmest
part of the day, and ten first appeared
upon the eleven p. m. charts.
In respect to their progressive mo-
ton, Lieutenant Woodruff divides cold
waves into three classes. OF the
lightweight observed twenty-five be-
longed to the first class or to those that
move directly across the country from
west to east, and which follow an al
most invariable path along the chain
of great lakes and across New England
and do not extend to the States south
of the Ohio river 10 the second class
those which move in southeasterly
direction and cover the entire country
in their progress-he assigns forty
seven out of the lightweight and he as
signs nineteen to the third class-those
which move southerly from Montana
and Dakota to Texas, thence through
the Gulf States, and then northeasterly
over the Atlantic coast States. 1t
sometimes occurs with the third class
that the cold wave is first felt at st.
Louis and Shreveport before being felt
at St. Paul and Chicago, and that then
the cold wave takes the general move
ment eastward of the second class.
In commenting upon results and in
nuences of cold waves, Lieutenant
Woodruff says: 1t often happens that
cold wave sets in from the extreme
Northwest, and upon reaching the.
Mississippi River divides, part going
northeasterly to the lower lake region,
and the other part southwark to the
Gulf States, in either case the intensity
appears to be greatly diminished. This
action seems generally to be due to the
sudden development of storm some-
where in the southern part of the Mis-
souri, Valley. Sometimes storm Of
slight energy remains in Kansas, Mis-
souri, and Indian Territory, and has the
effect of retarding, or even totally de-
stroying cold wave. Again, when
cold wave is retarded in this way it
seems often to gather force and in
tensity, and rush rapidly forward, and
spread over the entire country,
Another frequent feature is that after
q cold wave commences the temper
ature begins to fall in the Northwest,
and another wave is formed entirely
distinct from the first, from which it
becomes separated by warm wave;
the warm wave is only narrow belt,
but the cold waves are perfectly dis
| tinct.- Western RHrdl.