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<br /> <br />I / <br />'.to <br />,- RtLENE~ <br />" ~Us.l '1 l' <br />\~' Cv~/'V <br />" ' <br />'. ?" <br />--~~ <br /> <br />WEEKLY ~EWSLE'l'TER <br /> <br />94-15 <br />FOR THE PERIOD AUGUST 7 - AUGUST 13, 1994 <br /> <br />General Interest: One indication the season is waning is that this <br />past weekend (Aug. 13th-14th) we experienced a rapidly moving <br />Canadian cold front passing through the reglon---a few weeks <br />earlier than normal---bringing much needed rainfall and much cooler <br />air to the region. Another indication it's late in the season is <br />that the time has come in which some of our pilot interns leave the <br />Wl"WM program to return to school as they will do this week. <br />Assistant .l!let9orol~!$ti Eric How:tason, left us last week for the <br />work with the National. Weather Service and w111 be replaCed by <br />Nelson Scott,s recent graduate from the University of Missouri. <br />Eric was here three seasons and added a great deal to the overall <br />program during that time. In addition to his ~teorolog1cal <br />ability, Eric brought valuable radar and computer skills with h1~ <br />and, in retrospect, lent a high degree of continuity and stability <br />to our program's daily operations. We all wish both Eric and the <br />interns well in their future plans. Just a reminder to everyone: <br />~his program runs through September 15th---about a month away. <br /> <br />==~==~b~~~~~S~~~d~~e~~~~~~==~~~====~~~=Z~U~~S~~3~==a===~========a <br /> <br />OPERATIONS (All times given are COT): <br /> <br />AUGUST 7th - OPERATION~ DAY #41: A NW-SE line of storms developed <br />in late afternoon along the state line in western Wallace County. <br />When a storm within the line appeared likely to become aevers in <br />eastern COlorado, at 5:37 p.m., all planes were scrambled. More new <br />storm development built over northwest Greeley County and moved <br />southerly into central Greeley where radar showed large hail likely <br />to be falling. Cloud base seeding began in Greeley County at 6:12 <br />p.m. with all others joining within 16 minutes. The cloud top plane <br />began seeding there at 7: 10 p.m. As the storm.lIloved southe~ly,new <br />growth was confined mostly td its western side as it deVeloped into <br />A complex storm having multiple cores and producing multiple guat <br />fronts, one eventually being particularly important in that it <br />pushed south and southeast across Hamilton and Kearny counties <br />causing new cloud growtn in those areas. Since new growth on the <br />complex was western edge and the complex movement was southward, <br />seeding waa performed ever closer to the state line; so, cloud base <br />seeding was discontinued at 7:35 p.m. and flignts terminated. Cloud <br />top seeding ended at 7:39 p.m. and it returned to its baSe. <br /> <br />At 8:12 p.m. new cloud development, as seen from the radar <br />site in Lakin, was observed to be building north ot Syracuse over <br />a gust front produced earlier by the Greeley County storm complex. <br />rhree cloud base planes were scrambled for second flights. 11rat <br />plane airhorne WaS the syracuse-based plane which began seeding the <br />growing storm 5 miles west of Syracuse at 8:22 p.m. By that time <br />a NW-SE line or storms had grown across central Hamilton County. <br />Other planes joined at 8:22 p.m., 8:38 p.m. 'l'he last clOUd bSB$ <br />