Ottumwa tri-weekly courier. [volume] (Ottumwa, Iowa) 1903-1916, 1916-01-11
~. HOW TO FoRETELL STORMS

AN"AA ~ AK AlnIIVl VI "CoSASAb WING
ing clear, cool days. so the east wind
blows before a storm.
We have seen that the anti.cyclone
Is a great cone Of cold air, moving
across the country for the west and at
the same time circulating like the
hands Of a clock, so that all over North
America it produces a west wind. The
phenomenon known as cyclone, which
brings the storms, is the exact op-
posite in every way. 1t is a mass Oh
moist, warm air which usually forms
somewhere in the west or middle west.
The dry, cold air which surrounds IT,
being heavier, rushes in around us
base. squeezing it to a point, ana CIT
culating round and round 1t. mus
the cyclone is an inverted cone OF
warm, moist air circulating in the op-
posite direction from the hands OF
a clock.
If you are going to understand the
weather you must make no mistake
about he size and action OF these
cyclones and anti-cyclones. A cyclone
is usually oblong. 1t may exteno
from far into Canada to far out IN the
Gulf OF Mexico, and from the Atlantic
coast to the Mississippi valley. There
fore. as it revolves across the country
# brings east winds. and these east
winds are laden with moisture. Also
because of the great difference VI
Temperature between the a~nti-cyciohe
and the surrounding air, these winus
are ant to develop great violence so
the cyclone is the precursor of almost
everything undesirable in weather
The northeasters on the a
coast that kick the surf up mountain
high and wreck the boats, are ainlos.
invariably cyclones that originated
como where in Hockey Mountains > al
though you will have a hard tine eon-
v,ncing the longshoreman that they 10
not come across the water. IN sulh'
mer. when a long spell OF o muesS
weather settles upon the land sapplhs
vour energy and running your d'spoSf
t,or II is due to the presence OF a
to,n,d s,ow-moving cyclone. SO tnat
s.hanaver the wind comes from the
oo.t winter or summer, you may oe
sure the weather is going TO chahse
for the worse.
IT.. weather bureau has been watch'
ing every storm that has crosseu n'
11n;+od states for a great many years
,a,d ~ has found that there Is a resu'
lar cycle of these movements. Ever
wear. about 10 storms cross inc coun
trv and about 1Os OF these are porn III
~ uast while the other seven usual'
u. oome from the eastern guilt states
r,,teen storms a year start IN the
west o,,f states, especially In Iexas.
Twe,ve originate in the COLORADO
Rockies. The western plateau sta'eS
st,rt about ten storms every yea
Tho weather bureau knows approx
m,te,v The course that each OF .tneso
Ill, follow. For example, both the
a,,, and the Colorado storms usually
shoot across the country
y ri to the st. Lawrence valley. lha'
section gets about two storms a weeA'
~ n ali About the best thing you
oan sax for the weather. In the St
lawrence valley is that 1t never lasts
long. ~
Occasionally, any OF these stor". J.
NAV deyiate slightly from It's usua'
nath. The result will be storm IN
some section where clear weather was
a,od,cted. It is these little deviations'
;n,nossib,e to foresee, which cause
averv man who left his umDreiia AZ
home to say unpleasant things ABOUT
| the weather bureau.
Occasionally, two cyclones Will
uova across the country at the same
time. and if they happen to run 10
oother combining their moisture, a
/ very heavy rain is the result.
The brisk cyclone that brings a III
o,st wind and driving rain or snow
10 the least undesirable variety IL Is
tho s,ow-moving cyclone, bringing
moist. muggy weather, that is most to
he dreaded. In the winter 1t taxes
the form of fog, which rests upon the
earth until the cold, heavy air OF an
%anti-cyclone comes and pushes 1t
avay. In the summer it is a heat
wave, which usually lasts until 1t Is
! relieved by a thunder storm.
! As we have said, the surest indlca'
t,on of an approaching cyclone is a
wind from the east: This tells you
that it is coming. Just before it ar
rives. YOU will see a number of thin,
ore.+ a, was their submission to MS