New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1898-05-22

Tn. winds within The inilucnc" ~ IN" low pro"
-pirallF inward in direction contrary I" mus
under th. influence of the hlEn. Inc i"N'I Wv
barometer and the sleeper the gihii"iN ..''
NOR. rapid is the Nhrl Th'sc are some 81 tt'
characteristics Of lows. Thos" ~ Tx" class AK
r~ary fh~ stn" course. ana pr"iu'' hp,"' Tx
same results. hut th'y 10 not always NOV" WY"
the, same r1uiiit, so exact rule IN r"Ehii 10
them cln Dee lad lown. Empirical REASONING
and intimate association with tn" charts ias
after day and year after year IN IN" nam "lu'p
th. successful forccast"r FOR his important
functions.
Just as IN. old,s In river ~ whirling down
stream. SO are cod-wav" "i'!i"s hlEhs' an"
rainstoim cidics do~s) carried eastward py 'hr
general movement e thu upper atmosphere III
the ATTITUDES u the United states II - nm
portant that the fundamental principles ~ theS'
cldics De understood. sine" IN" weather changes
experienced from day 10 lay depend almost
wholly upon the Development ana drn Of these
high pressure and low pressure" ciiirS Dr. As
they ar, better known. highs and lows IN" wv"
rdIi..s AZ. easily listinSu!shAhlc the one from
the other. for. while travelling eastward IN the
same general direction. they rotate IN opposite
directions The high pressure eddy always tol-
lows in the track of the low-prcsSurc eddy. In
the high pressure ciiy-in which tn" air Is cola
and clear. and ia which the degree Of cold ~
nearly proportional To- the rise OF the barometer
the air Is drawn downward near the centre ~
the eddy and forced outward In all directions
from the centre along the surface ~ the earth.
This eddy At times Is two thousand miles III
diameter In the low pressure eddy which
the air Is warm. humid and often rainy or
snowy-thc surface air is drawn inward from all
directions toward the centre. THU the alter
nate passage of highs and lows controls our
weather conditions.
ROCKY MOUNTAIN STORMS
About six seventies Of our low pressure cddics
move from the Rocky Mountains eastward. They
vary from gentle whirls To storms OF consider
able intensity Their average diameter is about
one thousand miles The West Indian hurri-
cane. which comes up from the tropics and
skirts along Atlantic shore line has di-
ametrr OF rotation less than onc-haf that Of
the usual low pressure eddy. but its velocity Of
rotation Is much greater. Many of these hurri-
canes have "A diameter Of only three or four
hundred miles. but their velocity Of rotation is
often one hundred miles per hour. although their
rate Of translation. "a they move northeast
along coast. is seldom greater than thirty
miles per hour.
Twenty five years ago mariners on our great
lakes and seaboard depended on their own
weather lore To warn them ~ coming storms
Then. although the number OF craft plying on
our waters was much less than now. every
severe storm that swept the lakes or Atlantic
coast left destruction and death in its wake.
and for days afterward the dead were east ny
by the rcccding waves. and the shores were
lined with wrcckage. Happily this need not now
be the case. for the Weather Bureau Of the De
partment Of Agriculture Is ever watching the
changes Of atmospheric conditions. and giving
to the mariner warning OF coming storms. Each
observer tclegraphs instantly to the central
Office whenever the Instruments at his station
show unusual agitation. by this means the In