National Weather Service United States Department of Commerce

Stormy Western U.S.

An active and complex weather pattern is in store this weekend through next week, as multiple storms track from West Coast to East Coast. The activity starts today as a vigorous system moves through north-central California into the Intermountain West with rain, perhaps a few thunderstorms and heavy mountain snow. This system will move into the Upper Midwest tomorrow with a swath of heavy snow. Read More >

November 23, 2010 Simpson County Tornadoes

Storm Survey Information

Location Start/
End Time
EF Rating/
Max Wind Speed
Fatalities/
Injuries
Path Length Path Width
Simpson County
2 NW Harrisville to 1 SSW Braxton
10:30 am -
10:50 am
EF-1
100 mph
0 8 mi 150 yds
Simpson County
2 NE Martinville to 3.5 ENE Martinville
11:35 am -
11:40 am
EF-1
95 mph
0 2.5 mi 75 yds

Simpson County EF-1 Tornado
2 NW Harrisville to 1 SSW Braxton

The tornado appears to have begun near Highway 469 just northwest of the Harrisville community. The tornado moved east northeast, downing numerous trees and some power lines, and damaging some fences. The most intense damage was on Deer Camp Road, where a large number of trees were uprooted and snapped, power lines were downed, and one power pole was snapped. As the tornado approached Braxton, it caused roof damage to one home and damaged or destroyed several outbuildings. The tornado dissipated just south southwest of Braxton before crossing Highways 149 and 49.

Simpson County EF-1 Tornado
2 NE Martinville to 3.5 ENE Martinville

The initial damage was noted near the intersection of Warren and Warren Cook Roads, where several trees were downed. The tornado moved east and caused its most intense damage near the intersection of Warren Cook and Cole Roads. A chicken house was nearly destroyed, two other chicken houses sustained significant damage, a roof was blown off a mobile home, a few other homes sustained some roof damage, and numerous trees were snapped or uprooted. The tornado then caused roof damage to a house on Bill Collins Road. The tornado appears to have dissipated just after crossing Highway 540, where a couple of pine trees had their tops blown off and some limbs were blown down.

Simpson County Straight-line Wind Damage
north of Martinville

Three large trees were also blown down along Highway 541 just north of the Martinville community; however, this damage appeared to be straight line wind damage.

 


Acknowledgements

The National Weather Service thanks Simpson County Emergency Management Agency and Simpson County Sheriff's Department for their assistance in completing this damage survey.