An upper level trough slid across the central plains during the late afternoon and early evening hours of August 20th and 21st. Several discrete thunderstorms developed ahead of the trough in the extremely moist and unstable environment present over northwest and north central Kansas. Storms tracked eastward, and dropped hail up to an inch in diameter in Cloud County.  The main hazard with the storms that developed though were the damaging straight line winds.  Gusts up to 75 mph tore across counties in the north central part of the state, which toppled and trees and powerlines, and damaged a few farmsteads.

Thunderstorm Wind in GEARY, KANSAS
From 20-AUG-07 19:07:00 to 20-AUG-07 19:07:00 (CST-6)
Location: JUNCTION CITY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

The frames of several incomplete two bedroom, two-story homes in the Olivia Farms development were knocked down by severe thunderstorm winds.

Thunderstorm Wind in RILEY, KANSAS
From 20-AUG-07 19:30:00 to 20-AUG-07 19:30:00 (CST-6)
Location: MANHATTAN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CLOUD, KANSAS
From 20-AUG-07 17:34:00 to 20-AUG-07 17:36:00 (CST-6)
Location: GLASCO
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in RILEY, KANSAS
From 20-AUG-07 19:17:00 to 20-AUG-07 19:17:00 (CST-6)
Location: MANHATTAN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Blew a metal dumpster over.

Thunderstorm Wind in LYON, KANSAS
From 20-AUG-07 20:35:00 to 20-AUG-07 20:35:00 (CST-6)
Location: ALLEN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in OSAGE, KANSAS
From 20-AUG-07 20:49:00 to 20-AUG-07 20:49:00 (CST-6)
Location: OSAGE CITY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Lawn furniture blowing around.

Thunderstorm Wind in LYON, KANSAS
From 20-AUG-07 21:04:00 to 20-AUG-07 21:04:00 (CST-6)
Location: EMPORIA
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm Wind in CLAY, KANSAS
From 20-AUG-07 18:21:00 to 20-AUG-07 18:21:00 (CST-6)
Location: OAK HILL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CLAY, KANSAS
From 21-AUG-07 18:37:00 to 21-AUG-07 18:37:00 (CST-6)
Location: WAKEFIELD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in GEARY, KANSAS
From 20-AUG-07 19:02:00 to 20-AUG-07 19:02:00 (CST-6)
Location: MILFORD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees and power lines down.

Hail in CLOUD, KANSAS
From 20-AUG-07 17:22:00 to 20-AUG-07 17:22:00 (CST-6)
Location: JAMESTOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CLOUD, KANSAS
From 20-AUG-07 17:58:00 to 20-AUG-07 17:58:00 (CST-6)
Location: MILTONVALE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three to four inch diameter tree limbs down.

Thunderstorm Wind in CLAY, KANSAS
From 20-AUG-07 18:18:00 to 20-AUG-07 18:18:00 (CST-6)
Location: LONGFORD
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees blown down over the road.

Thunderstorm Wind in REPUBLIC, KANSAS
From 20-AUG-07 16:21:00 to 20-AUG-07 16:21:00 (CST-6)
Location: REPUBLIC
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The top of a 4 inch diameter tree was blown off.

Hail in CLOUD, KANSAS
From 20-AUG-07 22:24:00 to 20-AUG-07 22:24:00 (CST-6)
Location: AURORA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CLAY, KANSAS
From 20-AUG-07 18:53:00 to 20-AUG-07 18:53:00 (CST-6)
Location: WAKEFIELD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter