Late in the afternoon, and through the evening hours on June 24 a cluster of storms over southeast Nebraska congealed into a line of thunderstorms that focused across northern Missouri. Most notably within this line of storms was a cluster of QLCS tornadoes that formed in Grundy County. There may have been other tornadoes associated with circulations that were noted on radar, but emergency management confirmed damage consistent with tornadoes near Trenton and Laredo Missouri. Most of the damage was minor, but some grain bins being blown off their foundation was the highlight of the damage in the area. Rainfall was the other big story with this event as some areas received 6 to 10 inches of rain. Despite the excessive rain, the flash flooding was rather minor, however there were still numerous roads closed, and areas near Excelsior Springs were especially hard hit as the Fishing River rose out of its banks. Another semi-dramatic event occurred along I-29 just north of St. Joseph, where a crane that was being used to do road construction became unbalanced and tipped.

Flash Flood in HARRISON, MISSOURI
From 24-JUN-21 20:55:00 to 24-JUN-21 21:55:00 (CST-6)
Location: BLUE RIDGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Several roads and highways had running water in and around Bethany.

Flood in RAY, MISSOURI
From 25-JUN-21 07:28:00 to 25-JUN-21 10:28:00 (CST-6)
Location: KNOXVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

There was a social media report of a pond overtopping.

Flood in CALDWELL, MISSOURI
From 25-JUN-21 08:00:00 to 25-JUN-21 11:00:00 (CST-6)
Location: POLO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several roads in and around Polo were flooded, and a few vehicles stalled under the railroad viaduct in Polo.

Tornado in GRUNDY, MISSOURI
From 24-JUN-21 20:13:00 to 24-JUN-21 20:15:00 (CST-6)
Location: TINDALL
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

An embedded QLCS tornado moved through rural parts of Grundy County. The bulk of the damage as powerlines and trees, with minor structure damage.

Flash Flood in CALDWELL, MISSOURI
From 25-JUN-21 07:47:00 to 25-JUN-21 08:47:00 (CST-6)
Location: POLO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The sewage treatment plant in Polo was flooded.

Tornado in GRUNDY, MISSOURI
From 24-JUN-21 20:17:00 to 24-JUN-21 20:22:00 (CST-6)
Location: DUNLAP
Tornado F-scale: EF0
Reported by: Emergency Manager

A QLCS tornado formed within a squall line that moved through Grundy County. Most of the damage was relegated to trees, powerlines, and some minor structure damage in the area.

Thunderstorm Wind in DAVIESS, MISSOURI
From 24-JUN-21 19:50:00 to 24-JUN-21 19:53:00 (CST-6)
Location: PATTONSBURG
Magnitude: 56.00 EG
Reported by: Emergency Manager

Four power poles were down on Highway 69.

Flash Flood in CASS, MISSOURI
From 25-JUN-21 16:48:00 to 25-JUN-21 17:48:00 (CST-6)
Location: GARDEN CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several roads were underwater in and around Harrisonville, namely Highway 291 near Home Farm Road and 283rd Road near Kauffman Road.

Thunderstorm Wind in DAVIESS, MISSOURI
From 24-JUN-21 19:50:00 to 24-JUN-21 19:53:00 (CST-6)
Location: JAMESON
Magnitude: 56.00 EG
Reported by: Public

A power line and tree was down just north of Jameson near Kodiak and Highway 13.

Flash Flood in ANDREW, MISSOURI
From 24-JUN-21 21:07:00 to 24-JUN-21 22:07:00 (CST-6)
Location: AMAZONIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A construction crane along I-29 near Amazonia started tipping over due to erosion from rapid running water on a nearby creek.

Flash Flood in MERCER, MISSOURI
From 24-JUN-21 21:10:00 to 24-JUN-21 22:10:00 (CST-6)
Location: PRINCETON KAUFMAN AR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water rescues occurred at Highway 136 and Highway 65 in Princeton.

Flood in CALDWELL, MISSOURI
From 25-JUN-21 08:25:00 to 25-JUN-21 11:25:00 (CST-6)
Location: COWGILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

There was a social media report of some flooding over Highway F near Cowgill.

Flash Flood in SALINE, MISSOURI
From 25-JUN-21 03:20:00 to 25-JUN-21 04:20:00 (CST-6)
Location: STANHOPE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple cars were stuck in running water in Marshall.

Flash Flood in SALINE, MISSOURI
From 25-JUN-21 05:03:00 to 25-JUN-21 06:03:00 (CST-6)
Location: STANHOPE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads across Saline County were overrun with running water.

Flood in COOPER, MISSOURI
From 25-JUN-21 09:56:00 to 25-JUN-21 12:56:00 (CST-6)
Location: BOONVILLE ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several roads in and around Boonville were flooded. State Highways 5, B, and 87 were all close due to the heavy rain.

Tornado in GRUNDY, MISSOURI
From 24-JUN-21 20:18:00 to 24-JUN-21 20:21:00 (CST-6)
Location: LAREDO
Tornado F-scale: EF1
Reported by: Emergency Manager

Another QLCS tornado formed within a squall line across Grundy County. Local emergency management conducted the survey and came across several barns heavily damaged along the path, with the most significant damage coming near JJ and E, where two grain bins were caved in and moved off their foundation.

Flood in CLINTON, MISSOURI
From 26-JUN-21 08:00:00 to 26-JUN-21 08:00:00 (CST-6)
Location: GOWER
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Well after rain had ended, Castille Creek was high enough to cover the road at County Line road. The vehicle entered the flooded waters and was swept off the road into a nearby field, where one occupant drowned. Three others were able to get out of the vehicle or be rescued. The time of this occurrence was taken from news reports.

Flash Flood in ANDREW, MISSOURI
From 24-JUN-21 23:15:00 to 25-JUN-21 00:15:00 (CST-6)
Location: AMAZONIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

After several rounds of rain caused flash flooding water rescues were taking place in and around Amazonia.

Thunderstorm Wind in GRUNDY, MISSOURI
From 24-JUN-21 20:00:00 to 24-JUN-21 20:03:00 (CST-6)
Location: EDINBURG
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported 60 mph winds.

Hail in ATCHISON, MISSOURI
From 24-JUN-21 18:18:00 to 24-JUN-21 18:19:00 (CST-6)
Location: WATSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in HARRISON, MISSOURI
From 24-JUN-21 19:45:00 to 24-JUN-21 19:48:00 (CST-6)
Location: BETHANY
Magnitude: 56.00 EG
Reported by: Emergency Manager

Fire department reported 60 to 70 mph wind, and emergency management reported power poles down in Bethany.

Thunderstorm Wind in BUCHANAN, MISSOURI
From 24-JUN-21 20:15:00 to 24-JUN-21 20:18:00 (CST-6)
Location: ST JOSEPH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

The 911 dispatch center reported 60 mph wind in St. Joseph.

Flash Flood in HOLT, MISSOURI
From 24-JUN-21 23:26:00 to 25-JUN-21 00:26:00 (CST-6)
Location: CRAIG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Interstate 29 was closed between mile marker 84 and mile marker 92 due to water running over the road.

Flash Flood in DE KALB, MISSOURI
From 25-JUN-21 00:52:00 to 25-JUN-21 01:52:00 (CST-6)
Location: AMITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Portions of Highway J were overflowing with water.

Thunderstorm Wind in GRUNDY, MISSOURI
From 24-JUN-21 20:15:00 to 24-JUN-21 20:18:00 (CST-6)
Location: TRENTON
Magnitude: 56.00 EG
Reported by: Emergency Manager

Numerous trees were down across Trenton after 60 to 70 mph wind went through the city.

Flash Flood in DE KALB, MISSOURI
From 25-JUN-21 05:08:00 to 25-JUN-21 06:08:00 (CST-6)
Location: CLARKSDALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous roads across Dekalb County were submerged, with some water rescues in Clarksdale.

Flood in CLINTON, MISSOURI
From 25-JUN-21 16:48:00 to 25-JUN-21 19:48:00 (CST-6)
Location: PLATTSBURG ARPK ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Highway Y at Plattsburg and Hwy 116 were flooded and impassible.

Flood in DAVIESS, MISSOURI
From 25-JUN-21 18:00:00 to 25-JUN-21 21:00:00 (CST-6)
Location: ALTA VISTA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Water was over the road on Highway 6 near Alta Vista.

Flash Flood in COOPER, MISSOURI
From 25-JUN-21 05:21:00 to 25-JUN-21 06:21:00 (CST-6)
Location: BOONVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads were flooding with running water in Boonville.

Flash Flood in MERCER, MISSOURI
From 24-JUN-21 18:45:00 to 24-JUN-21 19:45:00 (CST-6)
Location: MODENA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported that gravel roads just west of Route U were running over with water.

Flash Flood in MERCER, MISSOURI
From 24-JUN-21 19:40:00 to 24-JUN-21 20:40:00 (CST-6)
Location: PRINCETON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

An ambulance barn was evacuated due to flooding rains.

Flood in RAY, MISSOURI
From 25-JUN-21 07:10:00 to 25-JUN-21 10:10:00 (CST-6)
Location: ORRICK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Social media report of a gas station experiencing flooding along Highway 210 near Orrick.

Thunderstorm Wind in GRUNDY, MISSOURI
From 24-JUN-21 20:20:00 to 24-JUN-21 20:23:00 (CST-6)
Location: DUNLAP
Magnitude: 56.00 EG
Reported by: Emergency Manager

Route V was closed due to several trees in the road.

Thunderstorm Wind in RANDOLPH, MISSOURI
From 24-JUN-21 22:14:00 to 24-JUN-21 22:17:00 (CST-6)
Location: RENICK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Storm spotter reported 60 mph wind near Renick.

Flood in CLAY, MISSOURI
From 25-JUN-21 07:19:00 to 25-JUN-21 13:19:00 (CST-6)
Location: EXCELSIOR SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Due to heavy rain and quick rise along the Fishing River several streets and businesses in Excelsior Springs flooded. The extent of the damage, from a monetary value is unknown.

Flash Flood in CARROLL, MISSOURI
From 25-JUN-21 05:32:00 to 25-JUN-21 06:32:00 (CST-6)
Location: MANDEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous roads in Carroll County, including in Carrollton were impassible due to running water.

Flash Flood in RAY, MISSOURI
From 25-JUN-21 05:36:00 to 25-JUN-21 06:36:00 (CST-6)
Location: VIBBARD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous water rescues occurred across Ray County.

Thunderstorm Wind in ANDREW, MISSOURI
From 24-JUN-21 18:53:00 to 24-JUN-21 18:56:00 (CST-6)
Location: SAVANNAH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public estimated a 60 mph wind gust.

Thunderstorm Wind in HARRISON, MISSOURI
From 24-JUN-21 19:45:00 to 24-JUN-21 19:48:00 (CST-6)
Location: BETHANY
Magnitude: 56.00 EG
Reported by: Fire Department/Rescue

There was a report of 65 mph wind with power poles down in Bethany.

Flash Flood in BUCHANAN, MISSOURI
From 24-JUN-21 20:15:00 to 24-JUN-21 21:15:00 (CST-6)
Location: ST JOSEPH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

There were reports of several streets with several inches or running water.