During the day on Saturday, May 10 several supercell thunderstorms formed across western and northern Missouri. The first cells formed around 3 pm in far northern Missouri, and produced very large hail up to the size of softballs!  These softball sized hail stones fell near the city of Trenton, Missouri in Grundy County. Later in the evening another cluster of storms formed directly over the Kansas City metro area, and after several minutes of maturing, a dominant supercell moved east of the metro and produced a strong tornado west of Orrick, Missouri. Unfortunately the tornado moved into the town of Orrick and damaged many structures; however, no injuries were reported with this tornado. The storm then went on to produce another tornado near the city of Marshall, Missouri in Saline County. Also remarkable with this supercell was that a storm chaser near the tornado reported winds in excess of 100 mph near Marshall. By the late evening hours most of the storm activity either dissipated or moved out of the area.

Hail in DAVIESS, MISSOURI
From 10-MAY-14 16:35:00 to 10-MAY-14 16:35:00 (CST-6)
Location: GALLATIN
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in GRUNDY, MISSOURI
From 10-MAY-14 16:10:00 to 10-MAY-14 16:10:00 (CST-6)
Location: TRENTON
Magnitude: 4.25 
Reported by: Emergency Manager

Softball sized hail was reported near Crowder State Park. Power lines were also reported down in West Trenton at 5:15 PM.

Hail in GRUNDY, MISSOURI
From 10-MAY-14 16:38:00 to 10-MAY-14 16:38:00 (CST-6)
Location: LINDLEY
Magnitude: 2.00 
Reported by: Public

This hail report was relayed to the office via social media.

Hail in NODAWAY, MISSOURI
From 10-MAY-14 15:57:00 to 10-MAY-14 15:57:00 (CST-6)
Location: CONCEPTION
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in HARRISON, MISSOURI
From 10-MAY-14 15:49:00 to 10-MAY-14 15:49:00 (CST-6)
Location: BETHANY
Magnitude: 2.00 
Reported by: Emergency Manager

Hail in CLAY, MISSOURI
From 10-MAY-14 15:42:00 to 10-MAY-14 15:42:00 (CST-6)
Location: LIBERTY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CLAY, MISSOURI
From 10-MAY-14 15:42:00 to 10-MAY-14 15:42:00 (CST-6)
Location: GLENAIRE
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in CLAY, MISSOURI
From 10-MAY-14 16:00:00 to 10-MAY-14 16:00:00 (CST-6)
Location: STOCKDALE
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in CLAY, MISSOURI
From 10-MAY-14 15:40:00 to 10-MAY-14 15:40:00 (CST-6)
Location: LIBERTY
Magnitude: 1.50 
Reported by: NWS Employee

Hail in GRUNDY, MISSOURI
From 10-MAY-14 16:24:00 to 10-MAY-14 16:24:00 (CST-6)
Location: TRENTON ARPT
Magnitude: 2.75 
Reported by: Emergency Manager

Hail in GRUNDY, MISSOURI
From 10-MAY-14 16:20:00 to 10-MAY-14 16:20:00 (CST-6)
Location: TRENTON ARPT
Magnitude: 2.50 
Reported by: Emergency Manager

Hail in HARRISON, MISSOURI
From 10-MAY-14 15:38:00 to 10-MAY-14 15:38:00 (CST-6)
Location: MITCHELLVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CLAY, MISSOURI
From 10-MAY-14 15:38:00 to 10-MAY-14 15:38:00 (CST-6)
Location: LIBERTY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GRUNDY, MISSOURI
From 10-MAY-14 16:17:00 to 10-MAY-14 16:17:00 (CST-6)
Location: TRENTON
Magnitude: 2.75 
Reported by: Emergency Manager

Hail in CLAY, MISSOURI
From 10-MAY-14 15:36:00 to 10-MAY-14 15:36:00 (CST-6)
Location: HOLT
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

This hail report was relayed via social media.

Hail in NODAWAY, MISSOURI
From 10-MAY-14 13:48:00 to 10-MAY-14 13:48:00 (CST-6)
Location: GRAHAM
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in HOLT, MISSOURI
From 10-MAY-14 13:40:00 to 10-MAY-14 13:40:00 (CST-6)
Location: MAITLAND
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CLAY, MISSOURI
From 10-MAY-14 15:35:00 to 10-MAY-14 15:35:00 (CST-6)
Location: BIGHAM HGT
Magnitude: 2.50 
Reported by: Public

Hail in CLAY, MISSOURI
From 10-MAY-14 15:35:00 to 10-MAY-14 15:35:00 (CST-6)
Location: GASHLAND
Magnitude: 2.00 
Reported by: Public

This hail report was relayed via social media.

Hail in MACON, MISSOURI
From 10-MAY-14 17:48:00 to 10-MAY-14 17:48:00 (CST-6)
Location: MACON ARPT
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in LAFAYETTE, MISSOURI
From 10-MAY-14 17:48:00 to 10-MAY-14 17:48:00 (CST-6)
Location: WAVERLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GENTRY, MISSOURI
From 10-MAY-14 15:05:00 to 10-MAY-14 15:05:00 (CST-6)
Location: ALBANY
Magnitude: 1.25 
Reported by: Law Enforcement

Hail in LAFAYETTE, MISSOURI
From 10-MAY-14 17:54:00 to 10-MAY-14 17:54:00 (CST-6)
Location: WAVERLY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in ATCHISON, MISSOURI
From 11-MAY-14 00:09:00 to 11-MAY-14 00:09:00 (CST-6)
Location: FAIRFAX
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in GRUNDY, MISSOURI
From 10-MAY-14 16:05:00 to 10-MAY-14 16:05:00 (CST-6)
Location: EDINBURG
Magnitude: 1.75 
Reported by: Emergency Manager

Hail in CLAY, MISSOURI
From 10-MAY-14 15:23:00 to 10-MAY-14 15:23:00 (CST-6)
Location: SMITHVILLE
Magnitude: 1.00 
Reported by: Public

This hail report was relayed via social media.

Hail in CLAY, MISSOURI
From 10-MAY-14 15:30:00 to 10-MAY-14 15:30:00 (CST-6)
Location: KEARNEY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HARRISON, MISSOURI
From 10-MAY-14 15:43:00 to 10-MAY-14 15:43:00 (CST-6)
Location: BETHANY
Magnitude: 1.75 
Reported by: Trained Spotter

Thunderstorm Wind in SALINE, MISSOURI
From 10-MAY-14 18:43:00 to 10-MAY-14 18:43:00 (CST-6)
Location: MARSHALL
Magnitude: 61.00 EG
Reported by: Law Enforcement

Several large trees and power lines down along Highway 240 between Marshall and Slater. Likely caused by rear flank downdraft.

Thunderstorm Wind in SALINE, MISSOURI
From 10-MAY-14 18:36:00 to 10-MAY-14 18:36:00 (CST-6)
Location: MARSHALL
Magnitude: 98.00 MG
Reported by: Storm Chaser

A storm chaser recorded a 113 mph wind associated with the rear flank downdraft of the tornadic storm near Marshall.

Hail in CLAY, MISSOURI
From 10-MAY-14 15:47:00 to 10-MAY-14 15:47:00 (CST-6)
Location: LIBERTY
Magnitude: 2.00 
Reported by: Public

This hail report was relayed via social media.

Hail in HOWARD, MISSOURI
From 10-MAY-14 19:15:00 to 10-MAY-14 19:15:00 (CST-6)
Location: ESTILL
Magnitude: 1.00 
Reported by: Storm Chaser

The hail was 2 inches deep with fog near Boonesboro.

Hail in MACON, MISSOURI
From 10-MAY-14 18:00:00 to 10-MAY-14 18:00:00 (CST-6)
Location: ANABEL
Magnitude: 2.25 
Reported by: Emergency Manager

Hail in GRUNDY, MISSOURI
From 10-MAY-14 16:13:00 to 10-MAY-14 16:13:00 (CST-6)
Location: BRIMSON
Magnitude: 2.00 
Reported by: Emergency Manager

Tornado in JACKSON, MISSOURI
From 10-MAY-14 16:15:00 to 10-MAY-14 16:17:00 (CST-6)
Location: SIBLEY
Tornado F-scale: EF2
Reported by: NWS Storm Survey

A tornado formed near the Jackson and Ray County line along the Missouri River. The tornado crossed into Ray County about 2 minutes after forming in wooded areas along the river.

Hail in CLAY, MISSOURI
From 10-MAY-14 15:29:00 to 10-MAY-14 15:29:00 (CST-6)
Location: LINDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Airplane Pilot

Hail in HARRISON, MISSOURI
From 10-MAY-14 15:27:00 to 10-MAY-14 15:27:00 (CST-6)
Location: BETHANY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CLAY, MISSOURI
From 10-MAY-14 15:27:00 to 10-MAY-14 15:27:00 (CST-6)
Location: LINDEN
Magnitude: 1.75 
Reported by: Public

Hail in HARRISON, MISSOURI
From 10-MAY-14 15:25:00 to 10-MAY-14 15:25:00 (CST-6)
Location: MITCHELLVILLE
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in CLAY, MISSOURI
From 10-MAY-14 15:24:00 to 10-MAY-14 15:24:00 (CST-6)
Location: PARADISE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LINN, MISSOURI
From 10-MAY-14 16:59:00 to 10-MAY-14 16:59:00 (CST-6)
Location: PURDIN
Magnitude: 1.75 
Reported by: Public

Golf ball sized hail broke windows near Browning.

Hail in GRUNDY, MISSOURI
From 10-MAY-14 16:55:00 to 10-MAY-14 16:55:00 (CST-6)
Location: LAREDO
Magnitude: 1.75 
Reported by: Public

Thunderstorm Wind in MACON, MISSOURI
From 10-MAY-14 17:30:00 to 10-MAY-14 17:30:00 (CST-6)
Location: CALLAO
Magnitude: 50.00 MG
Reported by: Emergency Manager

The emergency manager measured a 60 mph wind gust near Callao.

Thunderstorm Wind in MACON, MISSOURI
From 10-MAY-14 18:00:00 to 10-MAY-14 18:00:00 (CST-6)
Location: ANABEL
Magnitude: 61.00 EG
Reported by: Emergency Manager

The emergency manager reported roof damage and trees down near Anabel.

Hail in CLAY, MISSOURI
From 10-MAY-14 15:23:00 to 10-MAY-14 15:23:00 (CST-6)
Location: AVONDALE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

This hail report was relayed via social media.

Thunderstorm Wind in SALINE, MISSOURI
From 10-MAY-14 18:40:00 to 10-MAY-14 18:41:00 (CST-6)
Location: MARSHALL
Magnitude: 61.00 EG
Reported by: Storm Chaser

Roof damage with shingles off and multiple large trees down or uprooted 5 miles east of Marshall. Likely caused by rear flank downdraft.

Hail in RAY, MISSOURI
From 10-MAY-14 16:51:00 to 10-MAY-14 16:51:00 (CST-6)
Location: RICHMOND
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BUCHANAN, MISSOURI
From 10-MAY-14 18:53:00 to 10-MAY-14 18:53:00 (CST-6)
Location: FAUCETT FARRIS ARPT
Magnitude: 52.00 EG
Reported by: Trained Spotter

A trained spotter north of Dearborn reported a 60 mph wind.

Hail in CLAY, MISSOURI
From 10-MAY-14 15:20:00 to 10-MAY-14 15:20:00 (CST-6)
Location: SMITHVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GENTRY, MISSOURI
From 10-MAY-14 15:07:00 to 10-MAY-14 15:07:00 (CST-6)
Location: ALBANY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GENTRY, MISSOURI
From 10-MAY-14 15:05:00 to 10-MAY-14 15:05:00 (CST-6)
Location: ALBANY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in GRUNDY, MISSOURI
From 10-MAY-14 16:46:00 to 10-MAY-14 16:46:00 (CST-6)
Location: LAREDO
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DAVIESS, MISSOURI
From 10-MAY-14 16:35:00 to 10-MAY-14 16:35:00 (CST-6)
Location: GALLATIN
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in CLAY, MISSOURI
From 10-MAY-14 15:20:00 to 10-MAY-14 15:20:00 (CST-6)
Location: LINDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HOLT, MISSOURI
From 10-MAY-14 15:15:00 to 10-MAY-14 15:15:00 (CST-6)
Location: MAITLAND KNGLWOOD AR
Magnitude: 1.75 
Reported by: Public

Hail in GENTRY, MISSOURI
From 10-MAY-14 14:55:00 to 10-MAY-14 14:55:00 (CST-6)
Location: ALBANY
Magnitude: 1.75 
Reported by: Public

Hail in MACON, MISSOURI
From 10-MAY-14 17:38:00 to 10-MAY-14 17:38:00 (CST-6)
Location: ETHEL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CARROLL, MISSOURI
From 10-MAY-14 17:10:00 to 10-MAY-14 17:10:00 (CST-6)
Location: PLYMOUTH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GRUNDY, MISSOURI
From 10-MAY-14 17:27:00 to 10-MAY-14 17:27:00 (CST-6)
Location: TRENTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tornado in RAY, MISSOURI
From 10-MAY-14 16:17:00 to 10-MAY-14 16:55:00 (CST-6)
Location: ORRICK
Tornado F-scale: EF2
Reported by: NWS Storm Survey

This tornado is a continuation of the tornado that formed in Jackson County Missouri,  just south of Sibley, Missouri and trekked eastward paralleling Highway 210 just north of the Missouri River. The tornado entered the city of Orrick, Missouri, causing widespread damage in the town with the worst damage rating the tornado an EF-2. The school in town was nearly destroyed, causing classes to come to an end for the remainder of the school year. The tornado continued east of town and dissipated just southwest of Henrietta, Missouri.

Tornado in RAY, MISSOURI
From 10-MAY-14 17:00:00 to 10-MAY-14 17:02:00 (CST-6)
Location: LEXINGTON ARPT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tornado 2 for the day formed just north of the town of Lexington, Missouri and did damage to trees along the northern bank of the Missouri River, just north of Lexington. No structures were damaged in this short and weak tornado.

Tornado in SALINE, MISSOURI
From 10-MAY-14 18:26:00 to 10-MAY-14 18:43:00 (CST-6)
Location: MARSHALL
Tornado F-scale: EF1
Property damage: 10.00K
Reported by: NWS Storm Survey

The third and final tornado from this survey formed just north of Marshall, Missouri. While the tornado was very wide, it did not damage any structures that would suggest it was stronger than EF-1. Generally it impacted trees and power lines in the rural areas of Saline County and a few farm structures. The tornado dissipated just east of Marshall, Missouri about 20 minutes after is formed.