A strong, slow-moving low pressure system moved across northwest Kansas during the afternoon, resulting in over a dozen tornadoes, some strong and long-lived.  The strongest tornadoes occurred over Graham and Norton counties.  Other reports of baseball sized hail were received.

Tornado in NORTON, KANSAS
From 20-JUN-11 13:15:00 to 20-JUN-11 13:18:00 (CST-6)
Location: DENSMORE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Observer located 7 miles south of Norton viewing a tornado to their east.  This location agrees with that of a storm chaser who saw a dusty tornado to his south at the same time.  There is no known damage.

Tornado in SHERIDAN, KANSAS
From 20-JUN-11 16:27:00 to 20-JUN-11 16:28:00 (CST-6)
Location: SELDEN
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The tornado was brief and remained over open fields with no known damage.

Tornado in DECATUR, KANSAS
From 20-JUN-11 17:25:00 to 20-JUN-11 17:27:00 (CST-6)
Location: NORCATUR
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The tornado was brief and remained over open fields with no known damage.

Tornado in DECATUR, KANSAS
From 20-JUN-11 17:45:00 to 20-JUN-11 17:47:00 (CST-6)
Location: NORCATUR
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The tornado was brief and remained over open fields with no known damage.  Law enforcement reported two tornadoes occurring at the same time...one about one and a half miles east of Norcatur, and another about a mile north of Norcatur (this tornado).

Tornado in NORTON, KANSAS
From 20-JUN-11 13:26:00 to 20-JUN-11 13:27:00 (CST-6)
Location: CALVERT
Tornado F-scale: EF1
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Four utility poles were broken, and other minor damage occurred nearby, as this brief tornado moved northeast.

Tornado in NORTON, KANSAS
From 20-JUN-11 13:35:00 to 20-JUN-11 13:40:00 (CST-6)
Location: ALMENA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Dusty tornado reported southeast of Almena.  No known damage.

Hail in GRAHAM, KANSAS
From 20-JUN-11 12:57:00 to 20-JUN-11 12:57:00 (CST-6)
Location: PENOKEE
Magnitude: 2.50 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail broke windows on the west side of the house.

Thunderstorm Wind in GRAHAM, KANSAS
From 20-JUN-11 12:57:00 to 20-JUN-11 12:57:00 (CST-6)
Location: PENOKEE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The spotter reported peak winds estimated at 60 mph.

Hail in NORTON, KANSAS
From 20-JUN-11 13:39:00 to 20-JUN-11 13:39:00 (CST-6)
Location: NORTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in LOGAN, KANSAS
From 20-JUN-11 12:40:00 to 20-JUN-11 14:40:00 (CST-6)
Location: RUSSELL SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six inches of water was reported flowing across highway 25, three miles north of Russell Springs.  Radar estimated rainfall showed a broader area of two to four inches of rain across much of central Logan county during this time.

Flash Flood in SHERIDAN, KANSAS
From 20-JUN-11 17:15:00 to 20-JUN-11 20:15:00 (CST-6)
Location: HOXIE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Many streets in Hoxie have at least six inches of water flowing over them due to persistent heavy rainfall.

Tornado in GOVE, KANSAS
From 20-JUN-11 11:55:00 to 20-JUN-11 11:58:00 (CST-6)
Location: QUINTER
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The tornado was observed by the fire chief who stated it was a dusty tornado that remained over open fields.

Tornado in GOVE, KANSAS
From 20-JUN-11 12:00:00 to 20-JUN-11 12:06:00 (CST-6)
Location: QUINTER
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A second tornado was observed right after the first one.  This tornado developed over open fields north of Quinter and dissipated near the Sheridan Wildlife area along the Gove-Sheridan county border.  No damage was observed.

Tornado in GRAHAM, KANSAS
From 20-JUN-11 12:12:00 to 20-JUN-11 12:22:00 (CST-6)
Location: ST PETER
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a tornado over open, rural areas of western Graham county.  Times and locations adjusted by radar.  No known damage.

Tornado in GRAHAM, KANSAS
From 20-JUN-11 12:54:00 to 20-JUN-11 13:06:00 (CST-6)
Location: (HLC)HILL CITY MUNI
Tornado F-scale: EF3
Property damage: 5.00M
Crop damage: 0.00K
Reported by: Law Enforcement

A strong tornado developed just west of U.S. Highway 283 north of Hill City and moved northeast into southern Norton County.  The tornado produced extensive damage, including irrigation pivots overturned, utility poles destroyed, and farm implements rolled/tossed nearly 3/4 of a mile.  The worst damage occurred in northern Graham County just east of Highway 283.  Storm chasers reported at least one satellite tornado rotating around this main tornadic circulation.

Tornado in GRAHAM, KANSAS
From 20-JUN-11 12:57:00 to 20-JUN-11 12:58:00 (CST-6)
Location: (HLC)HILL CITY MUNI
Tornado F-scale: EF1
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Storm Chaser

NWS employee and storm chaser indicated a satellite tornado north and northwest of the main tornado at approximately this time.

Tornado in GRAHAM, KANSAS
From 20-JUN-11 13:04:00 to 20-JUN-11 13:05:00 (CST-6)
Location: (HLC)HILL CITY MUNI
Tornado F-scale: EF1
Property damage: 500.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS employee and storm chaser reported a satellite tornado just east of Highway 283 in extreme northern Graham County.

Tornado in NORTON, KANSAS
From 20-JUN-11 13:06:00 to 20-JUN-11 13:12:00 (CST-6)
Location: EDMOND
Tornado F-scale: EF2
Property damage: 1.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

This large tornado moved from northern Graham County into Norton County, dissipating near Norton County Road E-6 and Highway 9 west of Densmore.  The tornado was still producing EF2 damage in Norton County as it destroyed utility poles, grain bins and tree rows.  A farmstead suffered significant damage west of Densmore.  The roof was heavily damaged, vehicles and farm implements were moved, with grain bins and outbuildings damaged or destroyed.

Tornado in NORTON, KANSAS
From 20-JUN-11 13:25:00 to 20-JUN-11 13:32:00 (CST-6)
Location: DENSMORE
Tornado F-scale: EF3
Property damage: 350.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Storm survey team located a four-mile track of significant damage along and just south of Road S from Road 6 to Road 10.  Major damage occurred to a grove of large cottonwood trees.  Nearby, a farmstead received damage to outbuildings, utility poles, with the south-facing wall of the home bowed out as a result of the tornado.

Hail in GRAHAM, KANSAS
From 20-JUN-11 12:30:00 to 20-JUN-11 12:40:00 (CST-6)
Location: MORLAND
Magnitude: 2.75 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail was mostly the size of golf balls, but the largest was baseball sized.  The hail lasted for about ten minutes.  Windows were broken due to the combination of large hail and strong wind.

Tornado in NORTON, KANSAS
From 20-JUN-11 17:44:00 to 20-JUN-11 17:50:00 (CST-6)
Location: REAGER
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The tornado was brief and remained over open fields with no known damage.  Law enforcement reported two tornadoes occurring at the same time...one about one and a half miles east of Norcatur (this tornado) and another about a mile north of Norcatur.

Tornado in NORTON, KANSAS
From 20-JUN-11 13:30:00 to 20-JUN-11 13:40:00 (CST-6)
Location: CALVERT
Tornado F-scale: EF2
Property damage: 300.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A four mile path of storm damage was surveyed southeast of Calvert.  A large outbuilding at a residence was completely destroyed, irrigation pivots overturned, utility poles damaged, and the back section of a house was also of heavily damaged.

Flash Flood in WALLACE, KANSAS
From 20-JUN-11 12:48:00 to 20-JUN-11 16:48:00 (MST-7)
Location: SHARON SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple city and county roads across Wallace county are flooded due to persistent moderate to heavy rainfall.  Highway 27 had water running across the road in several places between mile markers 134 and 137.  Doppler radar rainfall estimates of four to six inches were common over central and northern parts of the county.

Tornado in NORTON, KANSAS
From 20-JUN-11 13:41:00 to 20-JUN-11 13:51:00 (CST-6)
Location: ALMENA
Tornado F-scale: EF3
Property damage: 10.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

A strong tornado developed just northeast of Almena and traveled roughly along Highway 383 to the Phillips county line near roads E and 14.  (The tornado continued northeast for several miles into Phillips county before dissipating).  One residence was completely destroyed, but a mother and her four children amazingly escaped without injury after seeking shelter in the basement.  Many other farmsteads suffered significant damage to the residence itself, as well as to outbuildings, irrigation pivots, farm machinery and livestock.

Thunderstorm Wind in SHERIDAN, KANSAS
From 20-JUN-11 15:26:00 to 20-JUN-11 15:26:00 (CST-6)
Location: ANGELUS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The spotter estimated peak winds near 60 mph.