Numerous thunderstorms developed across North Central Kansas on this Sunday afternoon and evening. The first storm formed over Osborne county around 3:30 p.m. CDT. Other storms quickly developed and joined it, with most of the region experiencing thunderstorms. Some of these storms became severe over portions of Jewell, Mitchell, Osborne, and Smith counties. The largest reported hail was the size of half dollars at Natoma and Burr Oak. Wind gusts were estimated at 60 MPH in the town of Osborne.
A very long front extended from New England, through the Ohio Valley, across the Central Plains, and into the Desert Southwest. Portions of this front were stationary while others were being modulated by several waves of low pressure. The front lifted northward to the Kansas-Nebraska border by daybreak. One low ejected out of Colorado and moved east along the front through northern Kansas during the day. As this low progressed into northwestern Kansas, the dryline mixed eastward along with it, with a triple point forming at the location of the low. As the low continued moving east, the front dropped south and merged with the dryline. These storms formed along and head of the low and combined dryline/front. The upper level flow featured an amplified western trough and eastern ridge. A closed low was at the base of the trough over the Four Corners region. These storms initiated with the aid of a shortwave trough that ejected into the Central Plains ahead of this low. A strong 100 knot jet streak was at the base of the trough at 300 mb, placing the Central Plains in the favorable left front quadrant. Temperatures near the  time of thunderstorm initiation were near 90 degrees with dewpoints in the 60s. Combined with steep mid-level lapse rates of 8 degrees C/km, MLCAPE values were between 2000 and 3000 J/kg. Winds were strong throughout the column. Deep layer shear was in excess of 50 knots.

Thunderstorm Wind in OSBORNE, KANSAS
From 11-MAY-14 15:15:00 to 11-MAY-14 15:15:00 (CST-6)
Location: OSBORNE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts estimated at 60 MPH was accompanied by nickel size hail.

Hail in SMITH, KANSAS
From 11-MAY-14 16:52:00 to 11-MAY-14 16:52:00 (CST-6)
Location: LEBANON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in SMITH, KANSAS
From 11-MAY-14 15:30:00 to 11-MAY-14 15:30:00 (CST-6)
Location: SMITH CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in OSBORNE, KANSAS
From 11-MAY-14 17:05:00 to 11-MAY-14 17:05:00 (CST-6)
Location: OSBORNE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in OSBORNE, KANSAS
From 11-MAY-14 17:16:00 to 11-MAY-14 17:16:00 (CST-6)
Location: DOWNS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in OSBORNE, KANSAS
From 11-MAY-14 15:11:00 to 11-MAY-14 15:11:00 (CST-6)
Location: NATOMA
Magnitude: 1.75 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in OSBORNE, KANSAS
From 11-MAY-14 15:27:00 to 11-MAY-14 15:30:00 (CST-6)
Location: NATOMA
Magnitude: 1.75 
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Quarter to golf ball size hail was reported from a second severe thunderstorm which passed through.

Hail in JEWELL, KANSAS
From 11-MAY-14 16:00:00 to 11-MAY-14 16:00:00 (CST-6)
Location: BURR OAK
Magnitude: 1.25 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in OSBORNE, KANSAS
From 11-MAY-14 16:19:00 to 11-MAY-14 16:19:00 (CST-6)
Location: NATOMA
Magnitude: 1.25 
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Hail in PHILLIPS, KANSAS
From 11-MAY-14 02:10:00 to 11-MAY-14 02:10:00 (CST-6)
Location: LONG IS
Magnitude: 1.50 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public