Storm Events Database

Event Details

Event Thunderstorm Wind
Magnitude 70 kts.
State TEXAS
County/Area SAN AUGUSTINE
WFO SHV
Report Source NWS Storm Survey
NCDC Data Source CSV
Begin Date 2011-06-21 17:10:00.0 CST-6
End Date 2011-06-21 17:35:00.0 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 500.00K
Crop Damage 0.00K
Episode Narrative Severe thunderstorms developed in the morning, and again in the afternoon, on Tuesday, 21 June 2011. The thunderstorms formed after several days of record setting hot weather, which was the result of a persistent ridge of high pressure in the middle and upper atmosphere. On 21 June 2011 a strong trough developed in the middle and upper levels of the atmosphere moved from west to east across the central Plains breaking down the upper level ridge over the Four State area. This strong upper level trough allowed for gusty south winds to occur at the surface of the atmosphere in the four State area, and brought enough lift and instability to the atmosphere to allow scattered severe thunderstorms to develop both in the morning and the afternoon of 21 June 2011. These thunderstorms produced wind damage and a few tornadoes, in addition to brief episodes of heavy rainfall.
Event Narrative The National Weather Service conducted a storm survey in Nacogdoches and San Augustine County and concluded that damage was the result of a major downburst. Hundreds of trees from Chireno to San Augustine and to the south were either uprooted or snapped. A few single story homes in the Denning area sustained major structural damage due to large oak trees falling onto the homes. Several chicken houses were damaged by the downburst winds along FM road 1196. The roofs were peeled back. Numerous cars were damaged due to fallen trees, such as along FM road 1277, where two full size trucks were pinned by large oak trees.


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 1.030M 0.00K
BOGATA RED RIVER CO. TX 06/21/2011 03:45 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
HAGANSPORT FRANKLIN CO. TX 06/21/2011 03:45 CST-6 Thunderstorm Wind 53 kts. EG 0 0 0.00K 0.00K
MT PLEASANT TITUS CO. TX 06/21/2011 04:05 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
GARY PANOLA CO. TX 06/21/2011 12:24 CST-6 Lightning 0 0 30.00K 0.00K
CARTHAGE CO ARPT PANOLA CO. TX 06/21/2011 13:50 CST-6 Thunderstorm Wind 55 kts. EG 0 0 0.00K 0.00K
CARTHAGE CO ARPT PANOLA CO. TX 06/21/2011 14:15 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
GARY PANOLA CO. TX 06/21/2011 14:24 CST-6 Thunderstorm Wind 53 kts. EG 0 0 0.00K 0.00K
SHELBY CO. SHELBY CO. TX 06/21/2011 14:55 CST-6 Tornado EF0 0 0 0.00K 0.00K
GARY PANOLA CO. TX 06/21/2011 15:06 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
ARCADIA SHELBY CO. TX 06/21/2011 16:00 CST-6 Tornado EF0 0 0 0.00K 0.00K
CHOICE SHELBY CO. TX 06/21/2011 16:40 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
NACOGDOCHES NACOGDOCHES CO. TX 06/21/2011 16:52 CST-6 Thunderstorm Wind 57 kts. EG 0 0 0.00K 0.00K
CHIRENO NACOGDOCHES CO. TX 06/21/2011 17:10 CST-6 Thunderstorm Wind 70 kts. EG 0 0 500.00K 0.00K
SAN AUGUSTINE SAN AUGUSTINE CO. TX 06/21/2011 17:10 CST-6 Thunderstorm Wind 70 kts. EG 0 0 500.00K 0.00K
PINELAND SABINE CO. TX 06/21/2011 19:05 CST-6 Thunderstorm Wind 53 kts. EG 0 0 0.00K 0.00K
MC ELROY SABINE CO. TX 06/21/2011 19:20 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
Totals: 0 0 1.030M 0.00K