A warm front was moving northward through Missouri during the early morning hours of May 7th. Showers and thunderstorms developed north of the front over northeast Missouri.  A few of the storms produced damaging winds.

Thunderstorm Wind in KNOX, MISSOURI
From 07-MAY-10 00:10:00 to 07-MAY-10 00:15:00 (CST-6)
Location: HEDGE CITY
Magnitude: 87.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Damaging downburst winds totally destroyed a machine shed on Highway T, approximately 5 miles south southwest of Knox City.  The debris field from the machine shed extended southeast in a narrow corridor 40 yards wide and one mile long.  The narrow corridor of enhanced winds were estimated around 100 mph.  Other tree damage was found half a mile north of the intersection of Highway T and County Road 296.  A few large trees were uprooted while many large branches were blown down to the southeast.  A little further to the east, about three quarters of a mile north of the intersection of Highway E with Highway T, a machine shed was damaged.  There were indications that the machine shed flexed and shifted when the high winds hit and this flexing produced ripples in the sheet metal siding.  Other damage was noted to the soffiting on the building and one large overhead door was blown to the northeast.  On the same farmstead, the high winds caused a silo to be destroyed with the debris from the silo causing the collapse and destruction of two additional silos.

Thunderstorm Wind in LEWIS, MISSOURI
From 07-MAY-10 00:27:00 to 07-MAY-10 00:30:00 (CST-6)
Location: LEWISTOWN
Magnitude: 87.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Downburst winds caused extensive damage on the south side of Lewistown.  A narrow corridor of enhanced winds, approximately 40 yards wide extended from the western edge of the town, between Monticello and Arbell Streets to Elm Street to the east.  Two mobile homes located west of Cherry Street were completely destroyed.  There were no occupants in either mobile home. A radio tower outside of the Lewistown Fire Station, which is on Cherry Street, was blown down.  A number of trees and large tree limbs were blown down in the area.  Pieces of the first mobile home were wrapped around one large tree trunk east of Cherry Street while much of the second mobile home was partially wrapped around and pushed against a large tree.  The home east of this point was protected by a large tree from much of the mobile home debris.  Winds were estimated around 100 mph in this area.  South of Arbell Street to the far southeastern part of town, damaging downburst winds were observed.  A few large trees fell on homes over this area.  A window was blown out on the Lewis County C-1 school on State Route J near the intersection with County Road 208.  The downburst wind damage area extended a bit further east to S. Oak Street.  No injuries were reported and no damage estimate was available.

Thunderstorm Wind in KNOX, MISSOURI
From 07-MAY-10 00:05:00 to 07-MAY-10 00:05:00 (CST-6)
Location: EDINA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds knocked down a power pole on Highway T just south of Highway 6.

Thunderstorm Wind in LEWIS, MISSOURI
From 07-MAY-10 00:25:00 to 07-MAY-10 00:27:00 (CST-6)
Location: LEWISTOWN
Magnitude: 70.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Downburst winds destroyed a machine shed in an open field about a quarter mile east of the intersection of Highway DD and County Road 204.  A little further to the east, a barn was destroyed.  The debris from this barn extended half a mile to the east southeast.