Manchester Democrat. [volume] (Manchester, Iowa) 1875-1930, 1907-06-26

The territory included in the States
OF Missouri, Kansas, Iowa and Ne
braska, the center of maximum fire.
quency being near the point of union
OF these four States, or about hun
dred miles east of the geographical cen
ter of the United States is the tornado
area. According to the reports of the
United States weather bureau, lorna
does occur more frequently in May,
April, June and July, in the order
named, the most violent ones thus fur
recorded having happened In April and
| the greatest number In May. Already
tornadoes have occurred this season
In this territory, accompanied by much
damage to property and loss Of life.
A tornado Is the concentration OF
storm energy. 1t Is the most destruc-
tive and the most sudden in appear
ance of all forms of atmospheric dis
turbance. and is least easily recog-
nlzed In Its early stages. even BY the
expert. A tornado and an electric
storm arise from the same general
conditions. and In the beginning can
not be distinguished one from the
other They often are Identical up to
certain point and are DETECTED into
the one or the other by local condi-
tons with which the general cyclonic
storm comes In contact in its passage
from one point to another.
Edward II. Bowie, chief of the St
Louis weather bureau, has made a
special study of the subject Of lorna
does and Is In position to speak with
authority regarding them.
Il think" said he, SIT would be well
to bring out one point in the begin
ming of this subject, and that is the
difference between tornadoes and cy-
clones. The sort of windstorm that Is
popularity called cyclone is not a cy-
clone at all. but Is tornado. The
tornado Is the storm that makes It's
appearance In the form of funnel-
shaped cloud, while the cyclone is a
general storm, or an area of low
barometric pressure. The word cy.
clone means revolving wind, 1t lis
true, and a cyclone Is a revolving wind.
oily the revolution covers a much
ereater area than that of the so-called
'tWisters, or tornadoes. A cyclone NAV
De a thousand miles In diameter, while
4 tornado may not be more than
nulareo reet.
THE CYCLONE.
The cyclone Is the parent az +ba ~,
nado. 1t is the general condition ~.
produces the tornado. There 10 ~,
ways cyclone somewhere IN the IJnIt-
ed States. Without It tbis oo,,ntn..
would dry IN, for fine cvcloro. h.,.,s
us our rains. If Won examine n ,aa ,e
err map YOU Will see cert,,ri soa.,s..
marked .low, Tbo.o - 49, ' i>'l
40" pressure, the storm centers or cy-
.ones, anu II you VIII look further
49,, w ~, nnu mat an the little arrows
~ ~ a,,oss,;e ens uiteStioni OF the wind
.low, roa,an -. ioeai1tles around this
ollv slantins to,rona ~, ailec.lon gener-
araa morl,a5 ,om,Ns,sa,,- ee.er OF tne
"a laf+ ~ on,o o". s from right
clock, Tint means thot 4bo o..,,,,
rum of the atmosnl,ere 10 ,,s.p u.,ii1-
but not violently md +bot an
Is in generally rotary d,.oa.,l ot.on
horizontal rather than rort,oo, M, pul
storm centers move across tha oo .nese
from day TO dav in n aanosa,, soun.ry
easterly direction and tba at.,s nuitnI
conditions which tbor spnefi le.
route are the Immediate o.,,s. gu
lent storms Of one kind ~ y. W.
Sometimes IL is a severe +bnnda.o.t.t-
and sometimes II ia +ornodn T ,ol u
storm centers, or cyclones a.tan,, @
large areas. yarvInp FROM ono o ,ea
miles to a thousand or nav III. ~
diameter. 's -
!" nA,,'h iohNApoEs ORIGINATE u
lornaooes always originate in the
southeast quadrant of these areas of