A moderately unstable warm sector developed during the late afternoon and evening hours across Northeast Texas, Southeast Oklahoma and Southwest Arkansas on April 30th.  A cold front was present across this region and storms began initiating along this boundary.  Shear was sufficient in the lower and mid levels of the atmosphere for a few of these storms to take on supercell characteristics.  A few of these storms produced tornadoes, along with large hail and damaging thunderstorm wind gusts.

Hail in CASS, TEXAS
From 30-APR-11 20:25:00 to 30-APR-11 20:25:00 (CST-6)
Location: HUGHES SPGS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Golf ball size hail was reported by local law enforcement in Hughes Springs, Texas.

Tornado in UPSHUR, TEXAS
From 30-APR-11 19:26:00 to 30-APR-11 19:30:00 (CST-6)
Location: THOMAS
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The National Weather Service conducted a storm survey in northwest Upshur County and concluded that the damage was the result of an EF0 tornado.  The tornado first touched down to the east of Simpsonville, Tx.  The storm continued on an east northeast track crossing Wolverine Road and lifted near FM 2454. Damage consisted mostly of trees snapped and/or uprooted especially along the end of the track where damage included Rear Flank Downdraft and Inflow damage.  Estimated wind speeds were 75-80 mph.

Tornado in CASS, TEXAS
From 30-APR-11 20:24:00 to 30-APR-11 20:32:00 (CST-6)
Location: HUGHES SPGS
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The National Weather Service conducted a storm survey in  southwest Cass County and concluded that the damage was the result of an EF0 tornado.  The tornado first touched down on the southwest side of Hughes Springs where several trees were snapped near FM 250.  The storm then continued on a northeast trajectory downing trees onto powerlines and removing shinges from a home along FM 2984.  As the storm continued to move northeast, several trees were uprooted, some large in nature, with shingles removed from a business along the east side of town. The tornado lifted just after downing 6 large pecan trees near a resident on FM 2992.
One of the large limbs from the trees punctured the back of his roof and damaged a storage building nearby. Estimated wind speeds were 75-80 mph.

Hail in CASS, TEXAS
From 30-APR-11 21:03:00 to 30-APR-11 21:03:00 (CST-6)
Location: RED HILL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CASS, TEXAS
From 30-APR-11 21:05:00 to 30-APR-11 21:05:00 (CST-6)
Location: ANTIOCH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Quarter sized hail was reported at County Road 3214 and Highway 77 west.

Hail in CASS, TEXAS
From 30-APR-11 21:30:00 to 30-APR-11 21:30:00 (CST-6)
Location: ANTIOCH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Quarter size hail was reported at the intersection of CR 3544 and FM. 96.

Tornado in WOOD, TEXAS
From 30-APR-11 18:06:00 to 30-APR-11 18:09:00 (CST-6)
Location: HAINESVILLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The National Weather Service conducted a storm survey in  Wood County and concluded that the damage was the result of an EF0 tornado.  The tornado first touched down to the west southwest of the community of Hainesville, Tx.  Trees were snapped with a path width of 50 to 75 yards wide.  The storm continued on an east northeast track crossing FM. 49 before lifting just to the west of Hainesville.  Damage consisted mostly of trees snapped and/or uprooted along the track.  Estimated wind speeds were 75-80 mph.

Thunderstorm Wind in MORRIS, TEXAS
From 30-APR-11 20:10:00 to 30-APR-11 20:12:00 (CST-6)
Location: LONE STAR
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The National Weather Service conducted a storm survey in  the southern portion of Morris County, Tx. and determined that the damage was consistent with severe thunderstorm wind gusts near 80 mph.  Damage was very sporadic and a tornado track could not be found.  Damage consisted of nearly the entire roof of a local feed store removed along Holt Road north of Black Mountain Road.  Other small trees were downed along Black Mountain Road  just west of Hwy. 259.  Minor shingle damage was also observed to a business just west of Hwy. 259.