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<br />e
<br />
<br />ux.xX.JX,J1 U.D. be rcptdcd u the ..hr vaJPC li-. Ihc IIopc
<br />ot lhc liDc g)AQCCuqlbc 6- uu;I 24.hJ val.. 'or lb& .ppropriaLC
<br />rcllUDpcriod.
<br />Ju. willa Ill)' ICparadoa into ICaJ.o.ar;. the bowlduy I;&Il oelJ'
<br />be uptdcd u the abarpul ponioD at . ZODC of Ir..wtloDkwWl
<br />n:poDl. ThcIc cquaUoDl have beeD lcllcd for boundary diKo.Qt(.
<br />lluiLig by c.ompuin. va1llC1 \Will cqualiou (rom bolb aid" of lb.
<br />boWldary. DitfcrcD/;CI weft; round LO be IlIOIlJy under 15 pet'CUl.
<br />Howtver, II h ","&&tiled lhal wbcll eompulia, aUm.lcI aIoDl or
<br />wi~ ' few lWlu of . Itpoo.l bouII4aI:y COBlplolLaUoaa be made
<br />U$lal cq...1ioAI .ppUc::ablc 10 ueb (cpop. and chat lbc -.w.rap of
<br />luda COalpULlIiou be adopted.
<br />ENlaaau III 1.kr pq:clplUdoa..fn.-KJ ,.aIMa lor ......
<br />paWa Mtwcd J .... 100)'ra. The I-hI ValUA lor dac 1. aDd
<br />100-)'1 rcl\Ull. ptriodi CUI be plotle.d oa Ihc nomol'tm of fiJUlc 6
<br />10 obtai. ulllC$ for 'clurQ pcrioda lru.lclUwa 2 yn 01 lCI& Ibao
<br />100 )'n. Duw I ,uaiJhllilM: COAA<<:liDllbc. 2- aad IOG-yt val_
<br />.Ad. (UoII lbe: dtWc4 (ChUB_period val~ from Lbc AOIOOJI.m.
<br />~ 1_ ~... 3..... (110--'" .....).~
<br />!Rt1N1IC1 "alMa. To oblaiA aUmaICf. 01 precipitltioa-lrcqlleDC)'
<br />Yill~ fOf 2 (l(:) hR, plot lhe 1..011 6-br vlJlIC5 bOGllbc AdM oa
<br />the ~pproprialc DOJI)OVIlQ of fi.urc 16. Dr.w I llni&ht1iac aMI~
<br />IlCtUDI, Ihc I- .ad 6-br valua.. I.lId Iud lb& 2,- aad 3.br valla
<br />hoQl. till DOmQJf.m. Thia DOmOjlUD Ia iadcpal4c1ll 01 rc&1lf1l
<br />period. .. wu 4cvdopcd WI dall frQm lbc lUll. re&iou uKd &0
<br />lkvelop!be 1-IIr cqualiolll.
<br />Th& malilelQllical aoIutioa Irom the dala UMd &0 dneJop
<br />liprc 16 aiva Ihe loUowitIJ cquaLioAl lot nlimaLiIll &be 1- aAd
<br />3.b.rvalllCl:
<br />Fat Ilcp. I, 2-hr _ 0.142 (6-hr) + 0.65. (I-lid m
<br />fpare 19 3-hr_0.591 (6-lIr) + 0.401 (I-hi) (4)
<br />Forllc~2, 2-br_0,341 (6-111) + 0.659 (I.t",) (S)
<br />I fiJUII: 19 ].br_ OS69 (6-hr)'+ 0.431 O.b.) (6)
<br />Fot Repool:J 2.hr _ 0.2.50 (6-hr) + 0.150 (l.hr) (7)
<br />. ~4,.1'lR 19 ].br_O.467 (6-h.) + O.S]l(I-I",) (I)
<br />~II 1...12-.... (121-") r '..... m...., ~
<br />To obuia ulilnala lor Ihc 12-1u dUrJlUoa. p101 valUCI frDIR Ihc:
<br />6- Ia4 24-br..... on 6prc 11. Re.d \be 12-br CIliIDIUCI eI &be
<br />ialCtIClaioIa aI &bc tiAc COClDCICtia& Ibae poiAIIlWiIh Ihc 12-br
<br />dW'aUoa U. orlbe awnopam.
<br />w..... for ... diu I .... To oblala ....1eI for dura-
<br />lkaaI oIlcu Ihaa. 1 hr, appl, dlc val.. fa table: 11 10 ahe I.hr
<br />vehM lor the retura period 01 iGtenlt.
<br />
<br />,...
<br />2.yr 0.7J
<br />15-"
<br />'0"
<br />215-"
<br />..."
<br />l()()'yr J.86
<br />
<br />
<br />.
<br />
<br />lIIuatratlon of Uaa of Praclpltallon.Fraquency
<br />Mepa, Dle.r.ms, and Equetlons
<br />To W.ulru& &he P,IU; ol llIClC JUJU, -raluu were rnd hom
<br />lipra 20 to 31101" the poiol 'I 19bOO' N. IlId l06bOO' W. Thue
<br />valun are pown ia boId'au I)'pc in !ilbk 13. lbe v.lun read
<br />from !he "'pI ahould bt ploued 011 Lbe relum-pcriod di'&"1D 01
<br />IiJUre 6 ~'I&IC (II pOI aU poin~ Ire .... eU~ 10 l04:ale on a leries
<br />ol map' If, arc I,uludc-km.itude illlcr,cclillm, (2) there ma)' be
<br />IW>JIlC llisht reparation diRereat<< in printin., .nd (l) precise
<br />Lalerpolalioa bclwun ilnlinu u lJillicult. Tbi, haa been done for
<br />Ibc 14-br valuca 1Ia I.ble 13 (6,. lB.) .nd . line: of bul 61 hu
<br />been dra.. lubjcctivel)'. On thil DOmoBr.nl. Ihe line liu Lbe d.la
<br />ralhu well. Ha4 an)' poin" deviiilcd noti(:..bl~ from lhe line:, Lbe
<br />value 'Mould have bun (erud horn Ihe line .nd Ihe new v.lue
<br />IUb,utl.llcd Ulllbk I) and adopted ill pccferw(:e to the ori.uw
<br />lcadi.tlaa.
<br />Tbt 1- &ad 1000,r I.hr vallla lor lbc point weR (:OIDpulcd
<br />InlIIIIIlhe cq~1lI applicable: 10 Repoo .. 6,l.Ire 19 (l.hle 11),
<br />YOU thc pow .. CUI 0( the Collunenlal Divide. The 2-)'r 1-hI
<br />vah~ is wiatatcd al 0.11 in. (2-)'1 6- and 24-M valuultucn lable
<br />13), thcutitD.1C:d I{)Q..)I I-br valuc U. 1.1611a. (100-)'( 6- and
<br />24.hr val..~ hu.. table U &ad elevaLion Q( 9,.500 II). 8)' plouln,
<br />litCK l-hr "a11&Ca OG 'I'lre Ii and (:04DC;CUIII them wllb a Iltai...,
<br />liac, Olle G&Il oblAia "licnat" IOf relllm pcrioda 01 .5, 10, 25, aD\J
<br />SO,R.
<br />TbcI 2- ud )-Iu valuu UII bt eslhDllcd b)' ualn& the rwlDO-
<br />JRIII of IlIIre 16 OJ ~ulliona (3) aDd (4). The I. aDd 6--hr
<br />valuCl lot Ihc deNIed lelum period arc obl.iacd AI .bove. Plot
<br />1huc poinli 001 lite IMNDOp" or 6111re 16 and ~~ ahe. with
<br />. i1lal,M~. Read lbe: "Iiwaln 'Of 2 01 3 hfl.1 the inlencclioAa
<br />of die W8IKCIiDj liAc and the 2- and 3-br vcnic:al liDq. An
<br />eumpJe ... aboWII in 6a;urc lib 'or the 2-)'r relUID period. lbe
<br />2-)'1 2-br (0,13 in.) ao4 2-,.. 3-br (0.91 in.) valUQlI"e in ilI1ica
<br />oalablell.
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<br />0.13 0.9! 1.OS I.U I
<br /> 1.31 UI
<br /> 1." ..., I.
<br /> 1.10 2.IS I
<br /> La 2.IS
<br /> 2.31 3.3S .
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<br />T.bl, 13. ",<<ipluukHI tUM 1M tI~pdt-I'~fMIItq .,,.,
<br />cQmpwuukm pol'" 106-00' W.. J9-00' N.
<br />
<br />fleur' ". P,"ipl'or/ofl de"II-.dIl,lJIlon tIl4IrQlfl (/. '06-Jv1.
<br />G. S,,",II I'lo/le. RelU'blk,.,., A11'A:lIJUlU, anJ CimarrOfl
<br />Rive,. BosilU(Re,lo" I. _,. 191.
<br />II. Son JIMUl. UPpI' Rio G,onU. Up,.,' C9IrwwMJ......
<br />GI4n1IUOfI R~" Blld~ .~,.Gr~~,. ..~IIIU BIIIbt
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