The times dispatch. [volume] (Richmond, Va.) 1903-1914, 1910-12-05
WEATHER MAP TELLS
EXACT CONDITIONS
Big Glass Frame in mes-Dispatch Building
Shows Every Detail in All Parts Of Country
How to Read 1t Easily.

Showing atmospheric conditions pre-
vailing at the same time from the At
lantc to the Pacific. and from the Gult
Of Mexico beyond the northern border
of the United states, a large glass map
has been Installed in the Main Street
office of The Times-Dispatch for the
benefit Of the public. With the proper
idea of the code, which is explained OH
its face, one can inform himself as to
the state of the weather in any part
of the United States at given time
during the day.
without looking into the code, which
is easily understood after a little study.
the weather map looks very much lilt.
Chinese puzzle. but in reality 1t S
simple--so simple that few who take
the trouble to stop for moment or
two and look at the code could fail to
be able to get the information wanted
in Il short while.
Key Easily Learned.
In addition to the key printed, D'-
rector Edward A. Evans gives to The
OF the weather map and the simplest
method of arriving at the state OF the
weather in any part Of the country:
For many years. the Weather Blu
or charts. Officially. they form the
base on which weather predictions ar.
made. In their use by the public they
supply an existing need for special
weather 10 ilsiSy sup
pers Of perishable stun. electric power
and water power companies commits
sion merchants, transportation lines,
packing houses, and. in fact all the
are directly or remotely affected by
the weather.
"Ths sustained development or
Weather, Bureau usefulness that has
been going on during the administra-
ton of the present chief Professor
willis L. Moore, is nowhere better
shown than in the forecasting and
weather map branch of It's work. Not
only are the needs OF the business in
terests of the country. so far as they
lie in the Weather Bureau. better sat-
| ished than ever before. but the educa-
tional value OF It's maps and other pub
locations has enormously iacreased. The
maps. particularly. are in daily use In
schools and colleges. and students are
given instruction in meteorology and
in the construction and use of weather
maps.
Information for Public.
"a most excellent way OF placing be
fore the public the daily conditions OF
the weather throughout the country is
| provided by the large glass weather
..For the use of the business men
and of the citizens of Richmond gem
orally, one of these glass maps has
Just been installed at the business Of
fec OF The Times Dispatch. An imne-
GlHle anu StIitiil luItIttl iAStS 'tfAh
taken in it, and go numerous have
been the Inquiries for information con-
corning 1t that the following explana-
ton of the data Is given. with the sns-
reference by those interested:
midway along tho bottom line of
the map will be found general ex-
PLANTATION to which attention is direct
ed. This explanation gives the mean
ing of all lines. figures and symbols
appearing on the map. Thus. all white
lines are barometer, or air pressure
lines. In passing over the map they
are SO drawn as to connect all points
in the United States where the air
pressure is the same at the observation
hour The purpose of these lines Is
to indicate where the air pressure Is
high. and where low the regions
covered by the high commonly having
fine weather while the high pressure
persists, and those occupied by the low
having foul or stormy weather
What ColOrs show.
again referring to our eNp a.,, TO,
half blue, wholly blue; yellow and
white arrow-symbols the same indi-
eating, respectively, clear; partly
CLOUDY, cloudy s!di; rainy and and sno Ssi,
for the observer to note the color OF
the weather symbols in and near the
high and the low for in this way
he will learn what sort of weather Is
accompanying lhe1n. linus, IL III diiu
near the Tow he finds blue or cloudy:
yellow, or rainy; white. or snowy SYM
bols prpdiminating he knows at once
! the character of weather the storm Is
causing as we'll as the exact sections
over which such weather prevails. The
observer should also be careful to note
each day the new position (geographi-
CALI occupied by the low. or storm
centre. II he does this he Will find 1t
moving along. sometimes slowl., some
times rapidly. but always moving to
the eastward (southeast, east or north
east, and always as it moves he
should look for the corresponding ad-
lions as shown by the color of the
arrow symbols.
For All the Country.
Figures in red entered opposite
cities indicate the minimum tempera-
ture of the preceding, night at the city
named; figures in yellow, so entered,