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Last modified
7/28/2009 2:41:49 PM
Creation date
4/30/2008 2:42:19 PM
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Template:
Weather Modification
Title
Investigations of Winter Storms over the Wasatch Plateau during the 1994 NOAA-Utah Field Research Program - Final Report
Date
7/1/1996
State
UT
Weather Modification - Doc Type
Report
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br /> <br /> <br /> -...-- lUL- <br /> ... 800 ./ <br />I <br />r" 2800 2820 <br />I ) / <br />I 2820 28~0 2860 <br /> ~/ <br /> /' <br />I <br /> - ~ 2880 <br />I '\I.-- <br /> 2900 <br /> 2380 u-- mo~ <br /> .-/ <br /> ~~O J <br /> ^ <br /> " <br /> "" <br /> ---- IlL. <fJ/ <br /> 29~0 <br /> c,' '" 29$0 298 <br /> .. --- . <br /> ~.Rni" jO, r .~ <br /> ' --1211m mY~.9 '.. ~ <br />Figure /8. Sume as Fig. -/. except lor 1200 GAr/'(0500 /1.1.)'1) on J:i Fehruary 11}l)-/. <br /> <br /> <br /> <br /> <br />Between 0500 on 17 February and 0500 on 18 February the main upper level trough a.xi~ <br />moved fmm offshore to a position over central Nevada. Strong cold air advection began over Utah <br />sometime after 1700 on 17 February. Moisture in the pretrough environment arrived over the <br />research area by 1700 on the 17 February, with the 700 mb temperature sull at a mild 3uovcr Salt <br />Lake City. By 0500 on 18 February the temperature had dropped 10 -90",ilh the passage of one short <br />'\'ave. Fib'lJre 18 depicts the cloud pattern and 700 mb fields at this time_ One short \'\"avc appears to <br />have bt.->en approaching western Colorado where winds '....ere still south-southwesterly, \,,'hile winds <br />over Utah had veered to westerly and decreased behind this first wavc. <br />NMC surface analyses also indicated a cold fronl passed through Utah between 1700 on 17 <br />February and 0500 on 18 February. From the cloud field in Fig. 18 it appears that one distinct band <br />had passed RRS and a second \vas located to the west ncar thc California-Nevada border. Between <br /> <br />28 <br />
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