Show CYCLONES AND TORNADOES TonNA DOES time tim places and conditions favorable to their development lieu lieutenant ten ant john P ranley of 0 the united states signal service has written a very interesting te article on tho the origin and der development 0 jop men t of 03 cyclones cloues and torra tornadoes does tho former being the typical general and the tha tatter litter tho the typical local no ph shows that while cyclones way inny develop within aws the united states slates they usually enter tills this country tron from adjacent regions tito video of 0 entry are arc the north pacific coast oregon and a aid north and the tha ault coast from each of those quarters tho cyclones approach with point po uliar far characteristics those entering the country over north dakota Du liula are most lost frequently accost palled by tornadoes lf to understand the rotation relation oho rf the tornado 10 the cyclone wo we must consider tho the disturbances its as divided into anad quadrants by to mo lines at all reghl h I 1 angi es one run nine ding north and south and the ao other cast and west the northeast quadrant Is kil distin distinguished guShed by great creat humidity high bleu winds and heavy cloud forma formations tiona ca P la in the southern portion toge thor with precipitation tito southeast quadrant 4 contains the maximum of heat beat arid and moisture it la Is the tha region of 0 of local terms storms especially or of tho the tornado nado the southwest quadrant Is worked marked by clearing weather and diminished humidity while the northwest has tho the mini ninin of moisture mol sture with brisk cold winds the sout southeast bert quadrant heln the recipient of 0 helas and moisture genen tug tho the and the most violent disturbance of 0 the equilibrium being jn in this quadrant and within a limited tired the centripetal forced beconi ei much greater and the formation format loa of tho the tornado ensues the questions which naturally hocur are ares Phat places i are bust adapted to the aba de of 0 tornadoes and what la is tho the t time line M hen conditions are most favorable to them finley points out that tornadoes tornado ei are found ja in regions where warm air adir lit gina to low flow underneath a colder and dryer upper stra stratum turn that comes another direction this condition Is followed shortly oy by an 1 I 11 In of the air to in tho the upper aid loner loiler strata the first visible blai effect 0 of t tile the corning storm being the appearance lit in the west and northwest t ot of ik beavy portentous lione niom bank of clot clouda ids followed suddenly by at violent commotion on tho the lace face of the douse black inas mii and by the rushing ot of adjacent clouds toward the center of tho the front tho the sout southeast beast east and us bs to time the stromer la is most favorable tor for the hie interior of the contla out li 14 warming aud arid tile the air of tho the ion I 1 ou or karats Is drawn from rom lower latitudes far it up tip into tho the northern northera norl hera pori port lons of t the country ou on the eastorn tide of the ih rocky the isothermal curve being toward the north lieutenant sumna tiry of the roi ro i uha suits of if Us big seems coms to cover everything that can bit be Cari kod on the sub eject briefly the most baat of them tire are as ful fallows lows generally accompany a alow loty pre pressure siuro area the pro rossice ros sive allot too of tire the tornado Is to the northeast north emst aud tile tho tornado with an exception occurs in the afternoon afier noon jutt just after the ibo hott iut part of tho the day the tornado season ino includes ludes march april may juno june july august road ind september tho the months s of groat frequency biln april may Muy juno June and july from a careful investigation there is a ei ory cry reason to bellevo hat I 1 40 that these theto I 1 storms storma were as frequent and violent ao 00 yours years ano ago as they ire bra now and ro appena a to bo be no cause for fomby any an nuptial change in their annual frequency for a like period to come As regards roi protection 1 in taso casa of 0 a tornado lieutenant finley can unfortunately say my little except unit tile ilio foniri side of it the tore lot path pali Is the aad the north earth side Is the safe ono one jf H the cloud lie its moving to tho the Dort hiat thap tho una llla ore 0 cs cupo li to tho H to abo client to tho the north to ono who stands atud ocle facing tho the cloud in tho thil direct line 1100 of its ap pro avob the safe auto tide side Is 1 always ut the right no structure that risca above too hie surface ot of the earth however built yia holly rea resist tivit the violence of laloi and therefore no building la Is safe either us as proper ty or as ai a refugo rans to protect taro worn from a bu point 0 view las As greeting affecting tho the questions anil abo tornado must bo ai a natural agency for to a C islat chod and continually proal d d bwll SW j L |