WMOD00124

• Applicant: Western Kansas Groundwater Management
• Project Name: Western Kansas Weather Modification Program
• Date: 1/1/2000
• Weather Modification - Doc Type: Report

Two addition planes from the south target area also were dispatched at the same time. Two planes began seeding
for hail suppression along the state line, west of Good land, at 4:20 p.m. Two more planes also began seeding for
hail suppression at 4:46 and 4:56 in northwest Wallace County. As the line developed to the south, two more
planes, dispatched from the southern target area, along with the cloud-top Cheyenne began seeding in western
Wallace County at 5:33. As line continued to develop to the south and into Greeley County all control of the
operation was release to Lakin Radar at 7:05.

At 9:43 p.m. two cloud-base planes returned to the control of Colby, Radar to investigate storms in Cheyenne
County, Colorado. The first plane began seeding for hail suppression, northwest of the Town of Arapaho, CO at
10:00. As the line advanced to the east. The second plane began seeding, north of Tribune at 10:25. Seeding
continued through Wallace County until II :02 p.m.. At this time all seeding was terminated and planes recall to
Colby, as the line of storms move outside the target area.

Monday. August 21. 2000 (North Operations day # 27)
At 8:56 p.m., five cloud-base planes were dispatched to an approaching line of storms and the associated outflow
boundary from Colorado. The outflow boundary quickly outdistanced the storms behind it by 10 to 20 miles.
Planes patrolled the boundary for any secondary development to occur. Two of the planes were recalled at to base
9:49. Two more were recalled at 10:00. One plane was instructed to proceed out to Cheyenne County, Colorado
to investigate a new line of storms approaching from the west. As a precaution, seeding for hail suppression began
with one plane at 10:09, southwest of Arapaho. Seeding continued along eastern Cheyenne County and into
western Wallace County until 10:34 p.m.. At this time seeding was halted over the town of Sharon Springs and
the plane release to the control of Lakin Radar.

Friday. August 25. 2000 (North Operations day # 28)
One cloud-base plane was dispatched from Leoti at 2:32 p.m. to an isolated radar echo in the northeast comer of
Cheyenne County, CO. Seeding for rain enhancement began at 3:15 p.m. in northeast Cheyenne County, CO.
However, cloud bases and inflows quickly dissipated and seeding was terminated at 3:24. A second cloud-base
plane was launched to investigate numerous, isolated cells over Sherman and Thomas Counties at 3: 15 p.m. After
patrolling various storm cells the pilot was recalled to Colby at 5 :00 without beginning seeding operations.

Thursday. Auiust 31st. (South Operations day # 45)
NOTE: Operations on 31 August were conducted from Lakin Radar, Lakin, KS
Four cloud-base planes were dispatched at 5:46 p.m. to rapidly developing, severe storm in south central Cheyenne
County, Colorado. The first two planes arrived on the storm and began seeding for hail suppression, southwest of
Arapaho, CO at 6:22 and 6:23. Two more planes arrived to assist in operations and began seeding, south of
Arapaho at 6:31 and 6:34. Due to mechanical difficulties, one plane was force to return to base at 6:42. Three
more cloud-base aircraft were launched and arrived at the storm to began seeding from inside Kansas, west of the
Town ofWeskan, in Wallace County at 7:10, 7:12, and 7:19 p.m.. And the cloud-top Cheyenne began cloud
penetrations at 7:45, west of Sharon Springs. Seeding continued as the storm moved to the northeast across
Wallace County and into northwest Logan County. The storm dissipated as quickly as it had developed, over
northwest Logan County. All seeding was terminated at 8:59 and planes recalled to base.

Page 5 of 15