A combination of a low pressure area along the Kansas Oklahoma border, and an outflow boundary across South Central Kansas, led to the development of supercell thunderstorms across South Central Kansas.  The supercells thunderstorms were noted for a swath of very large hail that extended from West Wichita to near Udall Kansas. Numerous reports of grapefruit or larger hail were reported across Wichita, with one such hail stone in West Wichita, Kansas, breaking the state record for diameter of 7.75 inches.   A few weak tornadoes were also produced, with all the tornadoes moving across open country.

Hail in MONTGOMERY, KANSAS
From 15-SEP-10 20:41:00 to 15-SEP-10 20:41:00 (CST-6)
Location: COFFEYVILLE
Magnitude: 1.00 
Reported by: Law Enforcement

Thunderstorm Wind in MONTGOMERY, KANSAS
From 15-SEP-10 20:41:00 to 15-SEP-10 20:41:00 (CST-6)
Location: COFFEYVILLE
Magnitude: 61.00 EG
Reported by: Law Enforcement

Quarter size hail was also reported with the strong wind gusts.

Tornado in COWLEY, KANSAS
From 15-SEP-10 19:00:00 to 15-SEP-10 19:02:00 (CST-6)
Location: BURDEN
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A rope tornado briefly touched down in an open field.

Hail in RENO, KANSAS
From 15-SEP-10 15:20:00 to 15-SEP-10 15:20:00 (CST-6)
Location: ARLINGTON
Magnitude: 2.75 
Reported by: Law Enforcement

Tornado in COWLEY, KANSAS
From 15-SEP-10 18:50:00 to 15-SEP-10 18:54:00 (CST-6)
Location: ROCK
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Rope tornado touched down in an open field.

Hail in BUTLER, KANSAS
From 15-SEP-10 15:50:00 to 15-SEP-10 15:50:00 (CST-6)
Location: EL DORADO
Magnitude: 0.88 
Reported by: Emergency Manager

Hail in RENO, KANSAS
From 15-SEP-10 16:03:00 to 15-SEP-10 16:03:00 (CST-6)
Location: CHENEY RES
Magnitude: 2.00 
Reported by: Broadcast Media

A KWCH-TV spotter reported one and a half to two inch hail at Cheney Lake.

Hail in RENO, KANSAS
From 15-SEP-10 16:10:00 to 15-SEP-10 16:10:00 (CST-6)
Location: CHENEY RES
Magnitude: 2.75 
Reported by: Trained Spotter

Tornado in GREENWOOD, KANSAS
From 15-SEP-10 18:02:00 to 15-SEP-10 18:04:00 (CST-6)
Location: SEVERY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A brief rope tornado touchdown was reported in an open field.

Hail in MCPHERSON, KANSAS
From 15-SEP-10 16:08:00 to 15-SEP-10 16:08:00 (CST-6)
Location: LINDSBORG
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in RENO, KANSAS
From 15-SEP-10 16:10:00 to 15-SEP-10 16:10:00 (CST-6)
Location: CHENEY RES
Magnitude: 3.00 
Reported by: Broadcast Media

The large hail was reported by a Wichita Eagle reporter.

Tornado in GREENWOOD, KANSAS
From 15-SEP-10 18:17:00 to 15-SEP-10 18:19:00 (CST-6)
Location: SEVERY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a brief tornado touchdown, moving east, along highway 400.

Hail in SEDGWICK, KANSAS
From 15-SEP-10 16:11:00 to 15-SEP-10 16:11:00 (CST-6)
Location: ANDALE
Magnitude: 2.75 
Reported by: Law Enforcement

Hail in SEDGWICK, KANSAS
From 15-SEP-10 16:25:00 to 15-SEP-10 16:25:00 (CST-6)
Location: GODDARD
Magnitude: 1.50 
Reported by: Broadcast Media

A KAKE-TV storm spotter reported the large hail.

Thunderstorm Wind in SEDGWICK, KANSAS
From 15-SEP-10 18:58:00 to 15-SEP-10 18:58:00 (CST-6)
Location: DERBY
Magnitude: 66.00 MG
Property damage: 2.50K
Reported by: Emergency Manager

Mulvane Fire department measured the gust. Several tree limbs were reported down.

Hail in SEDGWICK, KANSAS
From 15-SEP-10 16:20:00 to 15-SEP-10 16:20:00 (CST-6)
Location: GARDEN PLAIN
Magnitude: 2.75 
Reported by: Public

Hail in SEDGWICK, KANSAS
From 15-SEP-10 16:30:00 to 15-SEP-10 16:30:00 (CST-6)
Location: GODDARD
Magnitude: 2.75 
Reported by: Trained Spotter

Thunderstorm Wind in COWLEY, KANSAS
From 15-SEP-10 19:02:00 to 15-SEP-10 19:07:00 (CST-6)
Location: WINFIELD
Magnitude: 70.00 EG
Property damage: 132.00K
Reported by: Broadcast Media

Damaging winds from the rear flank downdraft of a supercell thunderstorm tore across portions of Winfield, laying out a path of destruction from north of Winfield, Kansas, to the east side of downtown. A trailer was destroyed northwest of Winfiled.  A church on the east side of town lost a portion of its roof, which flew off the building and pierced the side of a sport utility vehicle that was parked nearby.  A stout awning was also blown off a building on the east side of town, and numerous tree branches were knocked down as well. A good portion of the town was left without power.

Hail in SEDGWICK, KANSAS
From 15-SEP-10 16:35:00 to 15-SEP-10 17:10:00 (CST-6)
Location: GODDARD
Magnitude: 4.50 
Property damage: 150.00M
Reported by: NWS Storm Survey

Two supercell thunderstorms left a destructive swath of very large hail across portions of the county. The swath of hail was approximately 5 miles wide and 15 miles long, stretching from northwest of Goddard, Kansas through the western and southern half of Wichita, Kansas to near Rose Hill, Kansas.  Hail as large as softball and grapefruit size pounded roofs and cars along its path with over 35,000 claims turned into insurance agencies.   The hail made roofs look like a war zone, with holes big enough for people to stick their heads through.  Cars and golf courses were pot marked with large dents.  Some of the hail came through roofs, including the terminal at the Mid Continent Airport in Wichita.  Three commercial airliners were damaged and had to be towed to hangers for repairs.  The National Weather Service in Wichita suffered damage to its vehicles, including one hail dent that was almost 10 inches across.  One such hailstone 2 miles west of the National Weather Service office broke the state record for diameter, measuring 7.75 inches across (see separate entry).

Thunderstorm Wind in MARION, KANSAS
From 15-SEP-10 17:36:00 to 15-SEP-10 17:36:00 (CST-6)
Location: FLORENCE
Magnitude: 61.00 EG
Reported by: Emergency Manager

Pea sized hail was also reported.

Hail in BUTLER, KANSAS
From 15-SEP-10 18:07:00 to 15-SEP-10 18:07:00 (CST-6)
Location: DOUGLASS
Magnitude: 0.88 
Reported by: Amateur Radio

Hail in BUTLER, KANSAS
From 15-SEP-10 18:13:00 to 15-SEP-10 18:13:00 (CST-6)
Location: DOUGLASS
Magnitude: 2.00 
Reported by: Amateur Radio

Thunderstorm Wind in BUTLER, KANSAS
From 15-SEP-10 18:16:00 to 15-SEP-10 18:16:00 (CST-6)
Location: ROSALIA
Magnitude: 52.00 EG
Reported by: Trained Spotter

Half inch hail and very heavy rainfall was also reported.

Hail in WILSON, KANSAS
From 15-SEP-10 19:08:00 to 15-SEP-10 19:08:00 (CST-6)
Location: FREDONIA
Magnitude: 1.00 
Reported by: Law Enforcement

Wind gusts to 70 mph were also reported.

Thunderstorm Wind in COWLEY, KANSAS
From 15-SEP-10 18:23:00 to 15-SEP-10 18:23:00 (CST-6)
Location: ROCK
Magnitude: 52.00 EG
Reported by: Amateur Radio

An amateur radio spotter reported the gust.

Hail in COWLEY, KANSAS
From 15-SEP-10 18:34:00 to 15-SEP-10 18:34:00 (CST-6)
Location: UDALL
Magnitude: 2.50 
Reported by: Emergency Manager

Hail in COWLEY, KANSAS
From 15-SEP-10 18:33:00 to 15-SEP-10 18:33:00 (CST-6)
Location: UDALL
Magnitude: 2.50 
Reported by: Emergency Manager

The large hail varied in size from tennis ball to golfball size.

Thunderstorm Wind in SEDGWICK, KANSAS
From 15-SEP-10 17:35:00 to 15-SEP-10 17:35:00 (CST-6)
Location: OAKLAWN
Magnitude: 52.00 EG
Property damage: 0.50K
Reported by: Amateur Radio

Three inch diameter and eight foot long branches were knocked down.

Thunderstorm Wind in SEDGWICK, KANSAS
From 15-SEP-10 17:47:00 to 15-SEP-10 17:47:00 (CST-6)
Location: (ICT)WICHITA ARPT
Magnitude: 52.00 EG
Property damage: 0.50K
Reported by: Amateur Radio

Three to five inch tree limbs were blown down. Quarter sized hail was also reported.

Thunderstorm Wind in SEDGWICK, KANSAS
From 15-SEP-10 17:45:00 to 15-SEP-10 17:45:00 (CST-6)
Location: OAKLAWN
Magnitude: 52.00 EG
Property damage: 1.80K
Reported by: Amateur Radio

Eight inch diameter tree limbs were knocked down, along with some telephone poles.

Thunderstorm Wind in GREENWOOD, KANSAS
From 15-SEP-10 18:47:00 to 15-SEP-10 18:47:00 (CST-6)
Location: EUREKA
Magnitude: 52.00 EG
Reported by: Law Enforcement

Law enforcement officials reported the gust.

Thunderstorm Wind in GREENWOOD, KANSAS
From 15-SEP-10 18:47:00 to 15-SEP-10 18:47:00 (CST-6)
Location: EUREKA
Magnitude: 52.00 EG
Reported by: Law Enforcement

Law enforcement officials reported the gust.

Thunderstorm Wind in LABETTE, KANSAS
From 15-SEP-10 19:34:00 to 15-SEP-10 19:34:00 (CST-6)
Location: PARSONS TRI CITY ARP
Magnitude: 57.00 MG
Reported by: ASOS

Hail in COWLEY, KANSAS
From 15-SEP-10 18:50:00 to 15-SEP-10 18:50:00 (CST-6)
Location: WINFIELD
Magnitude: 1.75 
Reported by: Trained Spotter

Thunderstorm Wind in SEDGWICK, KANSAS
From 15-SEP-10 17:53:00 to 15-SEP-10 17:53:00 (CST-6)
Location: OAKLAWN
Magnitude: 52.00 EG
Property damage: 0.50K
Reported by: Amateur Radio

A metal shed was blown over the road.

Thunderstorm Wind in SEDGWICK, KANSAS
From 15-SEP-10 18:07:00 to 15-SEP-10 18:07:00 (CST-6)
Location: HAYSVILLE
Magnitude: 52.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

A directional sign was blown over and blocked the road.

Thunderstorm Wind in MONTGOMERY, KANSAS
From 15-SEP-10 19:35:00 to 15-SEP-10 19:35:00 (CST-6)
Location: CHERRYVALE
Magnitude: 56.00 EG
Reported by: Emergency Manager

The winds were estimated by a trained spotter.

Hail in SEDGWICK, KANSAS
From 15-SEP-10 17:47:00 to 15-SEP-10 17:47:00 (CST-6)
Location: HAYSVILLE
Magnitude: 1.00 
Reported by: Amateur Radio

Thunderstorm Wind in COWLEY, KANSAS
From 15-SEP-10 18:16:00 to 15-SEP-10 18:16:00 (CST-6)
Location: UDALL
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

An estimated wind gust to 60 to 70 mph broke some windows in a house. Golf ball sized hail was also reported.

Hail in BUTLER, KANSAS
From 15-SEP-10 16:37:00 to 15-SEP-10 16:37:00 (CST-6)
Location: ROSALIA
Magnitude: 1.75 
Reported by: Trained Spotter

Thunderstorm Wind in MONTGOMERY, KANSAS
From 15-SEP-10 19:35:00 to 15-SEP-10 19:35:00 (CST-6)
Location: CHERRYVALE
Magnitude: 63.00 MG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement measured the winds with multiple power lines down across town.

Thunderstorm Wind in WILSON, KANSAS
From 15-SEP-10 19:08:00 to 15-SEP-10 19:08:00 (CST-6)
Location: FREDONIA
Magnitude: 61.00 EG
Property damage: 10.00K
Reported by: Law Enforcement

Wind damage was reported from Fredonia to Neodesha.  The hardest hit city was Neodesha where a portion of the roof was blown off a motel, and numerous businesses had broken windows. Tree branches were reported down all across the city.

Tornado in SEDGWICK, KANSAS
From 15-SEP-10 17:28:00 to 15-SEP-10 17:30:00 (CST-6)
Location: HAYSVILLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A storm chaser also reported and had video confirming touchdown at this location.  Rotation was very weak and over an open field.

Hail in CHAUTAUQUA, KANSAS
From 15-SEP-10 19:47:00 to 15-SEP-10 19:47:00 (CST-6)
Location: CEDAR VALE
Magnitude: 1.00 
Reported by: Law Enforcement

Thunderstorm Wind in LABETTE, KANSAS
From 15-SEP-10 19:49:00 to 15-SEP-10 19:49:00 (CST-6)
Location: PARSONS
Magnitude: 61.00 EG
Reported by: Emergency Manager

There were several reports of 70 mph winds.

Tornado in SEDGWICK, KANSAS
From 15-SEP-10 17:52:00 to 15-SEP-10 17:53:00 (CST-6)
Location: DERBY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The tornado briefly touched down over open country before lifting.

Tornado in COWLEY, KANSAS
From 15-SEP-10 18:47:00 to 15-SEP-10 18:48:00 (CST-6)
Location: ROCK
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The tornado briefly touched down in open country.

Thunderstorm Wind in LABETTE, KANSAS
From 15-SEP-10 19:58:00 to 15-SEP-10 19:58:00 (CST-6)
Location: EDNA
Magnitude: 52.00 EG
Reported by: Trained Spotter

A trained spotter reported the gust.

Thunderstorm Wind in LABETTE, KANSAS
From 15-SEP-10 19:59:00 to 15-SEP-10 19:59:00 (CST-6)
Location: PARSONS
Magnitude: 61.00 EG
Property damage: 15.00K
Reported by: Law Enforcement

Widespread tree damage was reported across town. Some damage occurred to the Emergency Operations Center in Parsons.

Tornado in SEDGWICK, KANSAS
From 15-SEP-10 17:34:00 to 15-SEP-10 17:36:00 (CST-6)
Location: HAYSVILLE
Tornado F-scale: EF0
Reported by: Trained Spotter

Trained spotter was at West 103rd and Ridge Road looking to the northeast and reported a weak tornado on the ground in an open field.

Hail in SEDGWICK, KANSAS
From 15-SEP-10 16:39:00 to 15-SEP-10 16:49:00 (CST-6)
Location: (ICT)WICHITA ARPT
Magnitude: 7.75 
Property damage: 20.00K
Reported by: NWS Storm Survey

A massive hailstone fell as part of a swath of hail that hit the county. (See the separate entry about the path of the storm). The hail stone that fell over West Wichita broke the state record for diameter at 7.75 inches.  However, the official weight and circumference were not able to be obtained until 15 hours after the stone had fallen. At that time, the stone weighed 1.1 pounds and had a circumference of 15.5 inches.  Members of a six-person State Climate Extremes Committee declared that the hailstone was the state's largest diameter stone to ever have fallen.