During the late afternoon and well into the evening, scattered strong to severe thunderstorms formed over Northwest Kansas.  The storm coverage and intensity increased during the early evening.  The strongest storms were located near an old outflow boundary.  The largest hail reported was baseball size, with one report near Herndon and two other reports near Quinter.  Thunderstorm winds broke tree limbs three to four inches in diameter northeast of Atwood.  Due to repeated rainfall over Herndon and Quinter, flash flooding occurred.  A weak tornado was reported south of Tasco near the Gove County line with a developing thunderstorm, the same storm that produced baseball size hail near Quinter.

Hail in RAWLINS, KANSAS
From 18-MAY-18 18:25:00 to 18-MAY-18 18:25:00 (CST-6)
Location: HERNDON
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The hail ranged from pea to baseball size, with the hail covering the ground.  The combination of heavy rain and hail was creating near zero visibility.

Hail in GOVE, KANSAS
From 18-MAY-18 19:01:00 to 18-MAY-18 19:01:00 (CST-6)
Location: QUINTER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Tornado in SHERIDAN, KANSAS
From 18-MAY-18 18:36:00 to 18-MAY-18 18:37:00 (CST-6)
Location: TASCO
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A weak tornado formed south of Tasco near the Gove County line during the development of a thunderstorm.  No information was given regarding the path width or duration of the tornado.

Thunderstorm Wind in RAWLINS, KANSAS
From 18-MAY-18 18:40:00 to 18-MAY-18 18:40:00 (CST-6)
Location: LUDELL
Magnitude: 70.00 EG
Property damage: 0.80K
Crop damage: 0.00K
Reported by: Public

Three to four inch diameter limbs were broken.  This is the same location that had golf ball size hail.

Thunderstorm Wind in GREELEY, KANSAS
From 18-MAY-18 19:00:00 to 18-MAY-18 19:00:00 (MST-7)
Location: TRIBUNE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Reported in town.

Hail in RAWLINS, KANSAS
From 18-MAY-18 18:40:00 to 18-MAY-18 18:40:00 (CST-6)
Location: LUDELL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in DECATUR, KANSAS
From 18-MAY-18 19:13:00 to 18-MAY-18 19:21:00 (CST-6)
Location: OBERLIN
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail ranged from hen egg to golf ball in size.  The hail was still falling at the end of this time frame.

Hail in GOVE, KANSAS
From 18-MAY-18 19:14:00 to 18-MAY-18 19:14:00 (CST-6)
Location: PARK
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Reported at MM 103 on I-70.

Flash Flood in RAWLINS, KANSAS
From 18-MAY-18 18:20:00 to 18-MAY-18 21:20:00 (CST-6)
Location: HERNDON
Flood cause: Heavy Rain
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

One of the buidings in Herdon has water flowing into it.  The water is four inches deep in the building.

Hail in THOMAS, KANSAS
From 18-MAY-18 19:31:00 to 18-MAY-18 19:31:00 (CST-6)
Location: COLBY MUNI ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GOVE, KANSAS
From 18-MAY-18 19:38:00 to 18-MAY-18 19:38:00 (CST-6)
Location: QUINTER
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The hail was reported between MM 108 and 109 on I-70.

Hail in DECATUR, KANSAS
From 18-MAY-18 20:07:00 to 18-MAY-18 20:07:00 (CST-6)
Location: JENNINGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LOGAN, KANSAS
From 18-MAY-18 19:15:00 to 18-MAY-18 19:15:00 (CST-6)
Location: ELKADER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in THOMAS, KANSAS
From 18-MAY-18 20:20:00 to 18-MAY-18 20:20:00 (CST-6)
Location: HALFORD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in DECATUR, KANSAS
From 18-MAY-18 19:24:00 to 18-MAY-18 19:24:00 (CST-6)
Location: KANONA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in LOGAN, KANSAS
From 18-MAY-18 19:30:00 to 18-MAY-18 19:30:00 (CST-6)
Location: ELKADER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in RAWLINS, KANSAS
From 18-MAY-18 18:08:00 to 18-MAY-18 18:08:00 (CST-6)
Location: BLAKEMAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in RAWLINS, KANSAS
From 18-MAY-18 18:14:00 to 18-MAY-18 18:14:00 (CST-6)
Location: HERNDON
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in RAWLINS, KANSAS
From 18-MAY-18 18:23:00 to 18-MAY-18 18:23:00 (CST-6)
Location: HERNDON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GOVE, KANSAS
From 18-MAY-18 19:21:00 to 18-MAY-18 19:30:00 (CST-6)
Location: QUINTER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail ranged from nickel to golf ball then to quarter in size.  The hail was still falling at the end of this time frame.

Hail in GOVE, KANSAS
From 18-MAY-18 19:00:00 to 18-MAY-18 19:13:00 (CST-6)
Location: QUINTER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The hail ranged from quarter to ping-pong ball in size.  The hail was still falling at the end of this time frame.

Flash Flood in GOVE, KANSAS
From 18-MAY-18 20:20:00 to 18-MAY-18 23:20:00 (CST-6)
Location: QUINTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A number of streets are underwater in Quinter.  The bottom of the ramp at exit 107 has water roughly eight to ten inches deep.