WMOD00043 - Laserfiche WebLink

Home Browse Search

Colorado at 10:10 p.m. from Ford County. The extensive line of storms, seeded as it moved easterly, assumed a slight bow-echo shape as it entered Kansas, Oddly enough, individual storms moved northeasterly within this line. The most intense portion of the line being seeded moved into southwest Greeley County over Tribune. Seeding was also done in Stanton and Hamilton County along the leading edge of the line. .3 Between 11:09 and 11:28 p.m. a remarkable event occurred: A NW-SE oriented, solid line of severe storms became fully formed running from, northern Logan County, north of Russell Springs, across northeast Scott County, western and southwestern Lane County into eastern Finney, near Kalvesta. The solid line eventually extended further northwest past Goodland. The rapid development of 6+-0='" ..,,''', "'rn".."'" l'n"e'd somehow +-0' the C"l,-; "~,",..." l~..'ng in the .... _.. ~~ "._OJ It" .....-.....-..;r ......;\. . ... . '\,0' ....... ...,--..... .....,I.'o..J&.... ..4.;!l:I.J....." 4j same general area and to a change in low level wind direction causing moist air to be forced above the frontal boundary into a conditionally highly unstable atmosphere. There were numerous storms within that solid line indicating the presence of crop- damaging hail in them, Soon, that solid line of storms began translating southward on a convergence-collision course with tne other line of storms being seeded which had moved east from Colorado. The cloud top plane was scrambled at 11:20 p.m., airborne at 11:43 p.m. and seeding at 12:10 a.m. first beginning in northeast Wichita County and working southeast across the counties of Scott, Finney, Gray and Ford. It was able to make only one long seeding run along the length of the line before ending seeding. When it ended seeding on the southeast end of the line, the entire area between the line of storms it was seeding and the other line west of it, being seeded by cloud base planes, experienced explosive new severe storm growth and a complete merging of all elements in both lines and between both lines creating a larger (wider) line of storms. The line was oriented NW-SE across the target area but, fairly quickly, all severe storms began dissipating into relatively weaker. non-severe storms. Therefore, the operational situat10n changed extremely rapidly as these 'two extensive lines of storms converged. The first plane ended seeding at 12:38 p.m. being near its base coincidentally as the two lines of storms were merging, The other cloud base aircraft ended seeding at 1:08, 1:13, 1:28 and 1:41 a.m. For much of the time after 12:38 a.m. all cloud base aircraft spent seeding as best they could for short periods on severe storms, in and out of rainfall and artfully dodging newly developing severe storms. AUGUST lSth/16TH- OPERATIONAL DAYS *64/#65: Before sunset, an extensive NE-SW line of thunderstorms was advancing th:r-ough eastern colorado toward Kansas. By 9:40 p.m., two cloud base planes were scrambled to checkout a part of the line of storms where weak hail indications were seen on radar over Cheyenne Wells. Both planes returned to their bases at 10:17 p.m. after finding nothing significant on the line. ..",.. "'-'