A few thunderstorms developed in Central Kansas in the morning, primarily over Barton County where golf ball-sized hail was reported 5 miles south/southwest of Great Bend. That afternoon and evening, the severe thunderstorms increased considerably as a weak cold front moved across South-Central and Southeast Kansas into a moisture-rich environment. Both large hail, which at times was very large, was the primary severe weather mode early in the event while damaging winds were the dominant mode as the event progressed. One rapidly developing thunderstorm did produce a strong tornado over Greenwood County that touched down on the southwest side of Eureka.  The tornado tore a path through town from southwest to northeast, producing EF3 damage on the northeast side of town.  Eight injuries occurred with the tornado but fortunately none were life-threatening.

Thunderstorm Wind in BUTLER, KANSAS
From 26-JUN-18 19:45:00 to 26-JUN-18 19:48:00 (CST-6)
Location: DOUGLASS
Magnitude: 70.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Butler County Emergency Management relayed a report of a destroyed barn. The time of the event was estimated from radar.

Thunderstorm Wind in SEDGWICK, KANSAS
From 26-JUN-18 21:27:00 to 26-JUN-18 21:29:00 (CST-6)
Location: GODDARD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The 56-knot/65-mph winds were reported by campers at Lake Afton. Ping pong ball sized hail also occurred.

Thunderstorm Wind in SUMNER, KANSAS
From 26-JUN-18 22:01:00 to 26-JUN-18 22:02:00 (CST-6)
Location: CONWAY SPGS
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The 50-knot/58-mph gust was measured at a mesonet station 4.5 miles northeast of Conway Springs.

Thunderstorm Wind in SEDGWICK, KANSAS
From 26-JUN-18 22:00:00 to 26-JUN-18 22:01:00 (CST-6)
Location: VIOLA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel-sized hail was also reported.

Hail in BUTLER, KANSAS
From 26-JUN-18 18:09:00 to 26-JUN-18 18:10:00 (CST-6)
Location: EL DORADO
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The spotter also reported weak rotation.

Hail in BUTLER, KANSAS
From 26-JUN-18 18:50:00 to 26-JUN-18 18:53:00 (CST-6)
Location: EL DORADO
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Though not reported, it's likely the tennis ball sized hail caused damage.

Thunderstorm Wind in CHAUTAUQUA, KANSAS
From 26-JUN-18 12:33:00 to 26-JUN-18 12:34:00 (CST-6)
Location: CEDAR VALE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The winds were estimated up to 60 mph. Numerous limbs were downed along with some blowing debris.

Thunderstorm Wind in BUTLER, KANSAS
From 26-JUN-18 18:02:00 to 26-JUN-18 18:03:00 (CST-6)
Location: EL DORADO
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Butler County Emergency Manager estimated 50 to 60 mph winds. A rotating wall cloud was also sighted.

Hail in BUTLER, KANSAS
From 26-JUN-18 18:28:00 to 26-JUN-18 18:30:00 (CST-6)
Location: EL DORADO
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The ping pong ball-sized hail was reported in El Dorado.

Hail in BUTLER, KANSAS
From 26-JUN-18 19:11:00 to 26-JUN-18 19:12:00 (CST-6)
Location: AUGUSTA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in SEDGWICK, KANSAS
From 26-JUN-18 20:33:00 to 26-JUN-18 20:36:00 (CST-6)
Location: VALLEY CENTER
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Though not reported, it's likely the tennis ball-sized hail caused damage.

Hail in BUTLER, KANSAS
From 26-JUN-18 21:11:00 to 26-JUN-18 21:13:00 (CST-6)
Location: LATHAM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in SEDGWICK, KANSAS
From 26-JUN-18 21:40:00 to 26-JUN-18 21:42:00 (CST-6)
Location: CLEARWATER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in SEDGWICK, KANSAS
From 26-JUN-18 21:27:00 to 26-JUN-18 21:29:00 (CST-6)
Location: GODDARD
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The ping pong ball-sized hail was reported near Lake Afton. The time of the event was estimated from radar.

Thunderstorm Wind in CHAUTAUQUA, KANSAS
From 26-JUN-18 12:42:00 to 26-JUN-18 12:43:00 (CST-6)
Location: SEDAN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

No damage was reported.

Tornado in GREENWOOD, KANSAS
From 26-JUN-18 18:18:00 to 26-JUN-18 18:29:00 (CST-6)
Location: EUREKA
Tornado F-scale: EF3
Property damage: 13.69M
Crop damage: 0.00K
Reported by: NWS Storm Survey

A large circulation around tree top level moved into the southwest side of town causing minimal damage initially to trees and one business, before descending fully to the ground, as it moved northeast across town.  The tornado fully came down to the ground, on the northeast side of town, intensifying, and causing significant damage to homes and businesses.  The worst damage, rated EF-3, occurred just south of the high school, with one home having only interior walls remaining standing.   Eight injuries were reported due to the tornado, with three of the injuries occurring in one house.

Hail in BUTLER, KANSAS
From 26-JUN-18 20:30:00 to 26-JUN-18 20:32:00 (CST-6)
Location: EL DORADO RES
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The quarter-sized hail occurred just east of Highway 77.

Thunderstorm Wind in WILSON, KANSAS
From 26-JUN-18 21:50:00 to 26-JUN-18 21:52:00 (CST-6)
Location: FREDONIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed in Fredonia. Since the size of the tree was unknown, the speed is definitely an estimate.

Hail in RUSSELL, KANSAS
From 26-JUN-18 07:55:00 to 26-JUN-18 07:56:00 (CST-6)
Location: GORHAM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in BARTON, KANSAS
From 26-JUN-18 07:55:00 to 26-JUN-18 07:57:00 (CST-6)
Location: DUNDEE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in BUTLER, KANSAS
From 26-JUN-18 17:35:00 to 26-JUN-18 17:37:00 (CST-6)
Location: POTWIN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The quarter-sized hail was reported by the Potwin Fire department and was relayed by the Butler County Emergency manager.

Hail in BUTLER, KANSAS
From 26-JUN-18 17:50:00 to 26-JUN-18 17:52:00 (CST-6)
Location: EL DORADO RES
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm Wind in SEDGWICK, KANSAS
From 26-JUN-18 20:19:00 to 26-JUN-18 20:20:00 (CST-6)
Location: BENTLEY
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The speeds ranged from 50 to 60 mph along with pea to marble-sized hail.

Thunderstorm Wind in SEDGWICK, KANSAS
From 26-JUN-18 20:41:00 to 26-JUN-18 20:42:00 (CST-6)
Location: COLWICH
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The 54-knot/62-mph gust was measured one half mile west of Colwich.

Tornado in BUTLER, KANSAS
From 26-JUN-18 20:02:00 to 26-JUN-18 20:04:00 (CST-6)
Location: DOUGLASS
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Delayed report of a tornado touchdown north of town and west of Highway 77.

Tornado in BUTLER, KANSAS
From 26-JUN-18 17:39:00 to 26-JUN-18 17:41:00 (CST-6)
Location: EL DORADO RES
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Rope tornado moved east towards El Dorado lake.  No damage was reported.

Tornado in BUTLER, KANSAS
From 26-JUN-18 17:42:00 to 26-JUN-18 17:44:00 (CST-6)
Location: EL DORADO RES
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Brief small funnel touched down over open country.  No damage reported.

Flood in SEDGWICK, KANSAS
From 26-JUN-18 21:21:00 to 27-JUN-18 00:21:00 (CST-6)
Location: MAIZE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water was reported over the road.

Flood in BUTLER, KANSAS
From 26-JUN-18 22:23:00 to 27-JUN-18 00:23:00 (CST-6)
Location: CASSODAY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Some rural roads are impassable due to water over them.

Hail in SEDGWICK, KANSAS
From 26-JUN-18 22:00:00 to 26-JUN-18 22:01:00 (CST-6)
Location: VIOLA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Sixty mph winds also occurred.

Hail in BUTLER, KANSAS
From 26-JUN-18 18:58:00 to 26-JUN-18 19:00:00 (CST-6)
Location: EL DORADO
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Though not reported, it's very likely the baseball-sized hail caused damage on the northwest side of El Dorado.

Thunderstorm Wind in COWLEY, KANSAS
From 26-JUN-18 12:42:00 to 26-JUN-18 12:45:00 (CST-6)
Location: DEXTER
Magnitude: 65.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tractor trailer was blown over on Highway 166 4 miles west of the Cowley/Chautauqua County Line. It was unknown as to whether or not the driver was injured.

Hail in BUTLER, KANSAS
From 26-JUN-18 18:51:00 to 26-JUN-18 18:53:00 (CST-6)
Location: EL DORADO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BUTLER, KANSAS
From 26-JUN-18 19:08:00 to 26-JUN-18 19:10:00 (CST-6)
Location: AUGUSTA
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The half dollar-sized hail occurred just west of Augusta.

Hail in SEDGWICK, KANSAS
From 26-JUN-18 20:40:00 to 26-JUN-18 20:42:00 (CST-6)
Location: MAIZE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Though not reported, it's likely damage did occur. The hail size was estimated from a Twitter photo.

Hail in SUMNER, KANSAS
From 26-JUN-18 22:18:00 to 26-JUN-18 22:19:00 (CST-6)
Location: CONWAY SPGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Thunderstorm Wind in COWLEY, KANSAS
From 26-JUN-18 11:17:00 to 26-JUN-18 11:20:00 (CST-6)
Location: DEXTER
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Winds from 60 to 70 mph blew out a window at a rock quarry a couple miles west of Cedar Vale.

Thunderstorm Wind in NEOSHO, KANSAS
From 26-JUN-18 13:55:00 to 26-JUN-18 13:57:00 (CST-6)
Location: ST PAUL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A delayed report, via Twitter, was received showing a large section of a tree that was blown down. The time of the event was estimated based on radar.

Hail in SEDGWICK, KANSAS
From 26-JUN-18 20:37:00 to 26-JUN-18 20:38:00 (CST-6)
Location: MAIZE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

This was a Twitter report of hail that was slightly larger than quarters.

Hail in SEDGWICK, KANSAS
From 26-JUN-18 20:41:00 to 26-JUN-18 20:43:00 (CST-6)
Location: COLWICH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds around 60 mph were also reported.

Hail in WILSON, KANSAS
From 26-JUN-18 21:50:00 to 26-JUN-18 21:52:00 (CST-6)
Location: FREDONIA
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

This was a delayed report. Most of the hail was nickel to quarter-sized, but a few golf ball-sized specimens were mixed in.

Thunderstorm Wind in CHAUTAUQUA, KANSAS
From 26-JUN-18 11:23:00 to 26-JUN-18 11:25:00 (CST-6)
Location: CEDAR VALE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The caller estimated 60 to 70 mph winds. The time of the event was estimated from radar.

Hail in SEDGWICK, KANSAS
From 26-JUN-18 21:11:00 to 26-JUN-18 21:13:00 (CST-6)
Location: GARDEN PLAIN
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter to half dollar-sized hail was reported at the NW 21st/W 334th Street intersection.

Thunderstorm Wind in BUTLER, KANSAS
From 26-JUN-18 17:35:00 to 26-JUN-18 17:37:00 (CST-6)
Location: POTWIN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Quarter-sized hail was also reported by the Potwin Fire Department. The report was relayed via Butler County Emergency Management.

Thunderstorm Wind in BUTLER, KANSAS
From 26-JUN-18 19:33:00 to 26-JUN-18 19:35:00 (CST-6)
Location: DOUGLASS
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

There were reports of downed power lines along Highway 77 on the north side of Douglass.