During the evening of June 11, a complex of thunderstorms ripped through eastern Kansas and western Missouri, including through the Kansas City Metro area. While the severe weather was fairly widespread, impacts were pretty low. There were some sporadic areas of enhanced wind where several reports of 80+ mph wind was received with wide swaths of tree destruction. The area with the highest concentration of the worst damage was in the Excelsior Springs area, where tens to hundreds of large healthy trees were destroyed, including at nearby Watkins Mill State Park. No injuries were reported, but the widespread nature of the damage and magnitude of the highest wind reports made this the biggest event of the severe weather season in the area.

Thunderstorm Wind in RAY, MISSOURI
From 11-JUN-21 14:45:00 to 11-JUN-21 14:48:00 (CST-6)
Location: WOOD HGTS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One foot diameter tree uprooted with several large limbs broken.

Thunderstorm Wind in JACKSON, MISSOURI
From 11-JUN-21 14:46:00 to 11-JUN-21 14:49:00 (CST-6)
Location: DODSON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ten inch tree limb was down.

Thunderstorm Wind in CLAY, MISSOURI
From 11-JUN-21 15:00:00 to 11-JUN-21 15:03:00 (CST-6)
Location: MOSBY
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS reported a measured 62 mph wind.

Thunderstorm Wind in JACKSON, MISSOURI
From 11-JUN-21 15:00:00 to 11-JUN-21 15:03:00 (CST-6)
Location: SOUTH LEE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a 70 to 80 mph wind gust.

Thunderstorm Wind in JACKSON, MISSOURI
From 11-JUN-21 15:05:00 to 11-JUN-21 15:08:00 (CST-6)
Location: FAIRMONT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported 60 to 70 mph wind.

Thunderstorm Wind in CLAY, MISSOURI
From 11-JUN-21 14:30:00 to 11-JUN-21 14:33:00 (CST-6)
Location: EXCELSIOR SPGS
Magnitude: 61.00 EG
Reported by: Trained Spotter

Power pole snapped and 1.5 inch tree snapped.

Thunderstorm Wind in CLAY, MISSOURI
From 11-JUN-21 14:30:00 to 11-JUN-21 14:33:00 (CST-6)
Location: EXCELSIOR SPGS
Magnitude: 70.00 EG
Reported by: Law Enforcement

Several trees, estimated around 100, were heavily damaged or toppled due to a very strong storm, with 80 mph straight line wind. Nearby houses had damage to siding and several fences were destroyed.

Thunderstorm Wind in CLAY, MISSOURI
From 11-JUN-21 14:30:00 to 11-JUN-21 14:33:00 (CST-6)
Location: EXCELSIOR SPGS
Magnitude: 70.00 EG
Reported by: Trained Spotter

At Watkins Mill State Park there were 25 to 30 trees were down on top of cars and campers. No injuries were reported.

Thunderstorm Wind in JACKSON, MISSOURI
From 11-JUN-21 14:58:00 to 11-JUN-21 15:01:00 (CST-6)
Location: GRAIN VLY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ten inch tree limb was down near Grain Valley.

Thunderstorm Wind in CASS, MISSOURI
From 11-JUN-21 15:30:00 to 11-JUN-21 15:33:00 (CST-6)
Location: HARRISONVILLE
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

There was a report of a roof blown off of a church in Harrisonville.

Hail in ANDREW, MISSOURI
From 11-JUN-21 13:36:00 to 11-JUN-21 13:39:00 (CST-6)
Location: AVENUE CITY
Magnitude: 2.00 
Reported by: Trained Spotter

Thunderstorm Wind in JOHNSON, MISSOURI
From 11-JUN-21 16:30:00 to 11-JUN-21 16:33:00 (CST-6)
Location: KNOB NOSTER
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

A tree was blown down on a garage near McPherson.

Thunderstorm Wind in CLINTON, MISSOURI
From 11-JUN-21 14:00:00 to 11-JUN-21 14:03:00 (CST-6)
Location: GOWER
Magnitude: 65.00 EG
Reported by: Public

Power poles were down in Gower on J Highway and Middle Road.

Thunderstorm Wind in CASS, MISSOURI
From 11-JUN-21 15:10:00 to 11-JUN-21 15:13:00 (CST-6)
Location: RAYMORE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS Employee reported 60 mph wind.

Thunderstorm Wind in PETTIS, MISSOURI
From 11-JUN-21 16:08:00 to 11-JUN-21 16:11:00 (CST-6)
Location: GREEN RIDGE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public estimated 60 to 65 mph wind near Green Ridge.

Thunderstorm Wind in JOHNSON, MISSOURI
From 11-JUN-21 16:09:00 to 11-JUN-21 16:12:00 (CST-6)
Location: WARRENSBURG
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS Employee near Warrensburg reported 60 mph wind.

Thunderstorm Wind in BUCHANAN, MISSOURI
From 11-JUN-21 13:38:00 to 11-JUN-21 13:41:00 (CST-6)
Location: (STJ)ST JOSEPH MEM A
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS measured 60 mph wind at St. Joseph Rosecrans Airport.

Thunderstorm Wind in CLINTON, MISSOURI
From 11-JUN-21 14:23:00 to 11-JUN-21 14:26:00 (CST-6)
Location: LATHROP
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several large oak trees were blown over. The owner of the trees estimated 70 to 80 mph wind.

Thunderstorm Wind in CLAY, MISSOURI
From 11-JUN-21 14:27:00 to 11-JUN-21 14:30:00 (CST-6)
Location: EXCELSIOR SPGS
Magnitude: 78.00 EG
Reported by: Law Enforcement

Law enforcement estimated 80 to 90 mph wind that took down several 1 foot diameter trees between Kearney and Excelsior Springs. The trees were healthy and debris was strung everywhere.

Thunderstorm Wind in JOHNSON, MISSOURI
From 11-JUN-21 16:33:00 to 11-JUN-21 16:36:00 (CST-6)
Location: (SZL)WHITEMAN AFB
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

AWOS reported 61 mph measured wind.

Thunderstorm Wind in PETTIS, MISSOURI
From 11-JUN-21 16:34:00 to 11-JUN-21 16:37:00 (CST-6)
Location: SEDALIA ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported 60 mph wind.

Thunderstorm Wind in BUCHANAN, MISSOURI
From 11-JUN-21 13:20:00 to 11-JUN-21 13:23:00 (CST-6)
Location: ST JOSEPH
Magnitude: 52.00 EG
Reported by: Emergency Manager

Trees branches around 6 inches were down in St. Joseph.

Thunderstorm Wind in CLAY, MISSOURI
From 11-JUN-21 14:15:00 to 11-JUN-21 14:18:00 (CST-6)
Location: SMITHVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A ten inch tree limb was down in Smithville.

Thunderstorm Wind in CLINTON, MISSOURI
From 11-JUN-21 14:30:00 to 11-JUN-21 14:33:00 (CST-6)
Location: LATHROP
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A ten inch tree limb was down near Lathrop.

Thunderstorm Wind in CLAY, MISSOURI
From 11-JUN-21 14:30:00 to 11-JUN-21 14:33:00 (CST-6)
Location: HOLT
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several 2 to 3 inch tree limbs were down near Holt.

Thunderstorm Wind in CLAY, MISSOURI
From 11-JUN-21 14:33:00 to 11-JUN-21 14:36:00 (CST-6)
Location: KEARNEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 60 mph wind near Kearney.

Thunderstorm Wind in JACKSON, MISSOURI
From 11-JUN-21 14:49:00 to 11-JUN-21 14:52:00 (CST-6)
Location: FAIRMONT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported 65 to 70 mph wind in Independence.

Tornado in CLAY, MISSOURI
From 11-JUN-21 13:29:00 to 11-JUN-21 13:30:00 (CST-6)
Location: MISSOURI CITY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Someone driving along HWY 210 near Missouri City filmed a brief tornado in the field to the north of the highway. The visual appearance of the tornado was similar to a landspout, and with it being associated with a new updraft near a boundary, it was determined to be a landspout.

Thunderstorm Wind in ANDREW, MISSOURI
From 11-JUN-21 13:45:00 to 11-JUN-21 13:48:00 (CST-6)
Location: AMAZONIA
Magnitude: 52.00 EG
Reported by: Public

A two inch diameter tree is down near Amazonia.

Thunderstorm Wind in CLAY, MISSOURI
From 11-JUN-21 14:38:00 to 11-JUN-21 14:41:00 (CST-6)
Location: EXCELSIOR SPGS
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A two foot diameter tree was uprooted.