The news & observer. [volume] (Raleigh, N.C.) 1894-current, 1902-01-28
COLD WAVE VISITOR
Look Out For Him Tonight
and Wednesday,
The Temperature viii Fall 10 About Ten De-
grees Above Zero, But viii Moderate
Very Soon Altar Wednesday.

According TO the announcement, issued
Monday morning by the Weather Bureau,
another of our usual winter visitors is
now on the way, and may be expected
TO reach us this morning.
The changes in the weather in distant
Montana and the Dakotas are not without
interest to us in the Sunny South; indeed
all our cold waves come from the North
west and are generally first evident in
that region some two or three days be-
fore they arrive over the eastern portion
OF the United States. When the forecast
official observed Monday morning that
the temperature had fallen 10 % degrees
below zero at Bismarck, and to 20 degrees
below at Miles City, accompanied by the
usual accumulation of air constituting
an area of high barometer, he felt iusti-
fed in issuing werning of the approach
ing cold wave to an interested pub
lie.
In fact, by a. M. yesterday the tenn
rerature had already reached zero as far
South as ST. Louis, and was much below
freezing in Northern Texas, the Lake re-
cion and in the Ohio Valley. Along the
AII1nIlC
Maine cloudy, threatening weather still
prevailed under the influence of the re-
cent storm, Of which some evidences still
existed over New England
The presence OF a small secondary area
of low barometer in the east portion of
the Gulf of Mexico will hardly serve to
check the advent of the cold wave. The
change in temperature will probably be
felt this morning, although the lowest
point will not be reached before tonight,
or tomorrow morning.
Mr. Won Hermann expressed the opin-
io1 that the lowest point reached would
be in the neighbOrhood of about 10 de-
81 oes above zero not lower. Moreover,
as the winds have shifted to southerly
on the Rocky Mountain slope the dura-
ton of the very cold weather will not
exceed at most two or three days. Under
the circumstances it is a wise precaution
&c turn off water from pipes for a few
nights TO prevent freezing.
The mechanism of cold waves is really
very simple, AMI as it will be a pleas
IRE TO know "why it is cold" as we but
ton up our overcoats about our necks, we
give the following scientific explanation,
which we gathered in an interview with
Mr.. Won Hermann: .F
During the long nights OF the arctic
re gions large masses of cold air accumu-
late especially over the continental areas
of British America, and when favorable
arise detached portions
flow southwark by the path offering the
least resistance. This path is for our
region, down the plains of Manitoba and
the valley of the Mississippi river. whore
the slope of the land surface facilitates
the southwark flow of the heavy, cold
air. The flow of such a mass of cold
air is started by the development of
storm lin scientific language an area of
low barometerl over the southern Uni
ted States. causing a deficiency in the
quantity of air. which is Immediately
supplied by accessions form tho cold
north. IN that way all our cold waves
originate. The present specimen of ma
lures handwork is not however, likely
TIC prove especially severe.