The following events were reported: Hail, Thunderstorm Wind, Tornado. These occurred near station USW00003927, approximately 17.6098 km away, between 2012-04-03 12:00:00 and 2012-04-03 14:00:00. The events included records with hailstones measuring 12.0304 inches.The events resulted in 7 injuries and 0 fatalities. The events caused property damage valued at 260987000.0 and crop damage of 12000.0. Episode Narrative: A historic North Texas tornado outbreak occurred on April 3rd, with 17 tornadoes developing from the DFW Metroplex east to Hopkins County. An EF-3 tornado tore through the town of Forney, heavily damaging homes in the Diamond Creek subdivision. Three EF-2 tornadoes damaged parts of Arlington and Kennedale in Tarrant County; Red Oak, Lancaster, and Dallas in Ellis and Dallas counties; and Royse City in Rockwall and Hunt counties. An EF-1 tornado caused damage near Joshua in Johnson County, and the remaining 12 tornadoes were rated EF-0s. In addition to the tornadoes, large hail damaged many parts of the DFW Metroplex. Approximately 110 airplanes at DFW International Airport were damaged by the hail and taken out of service until repaired. No fatalities occurred and only 29 people were injured. Of the 29 injuries, only 3 were considered serious but everyone made a full recovery. The environmental set-up on this day consisted of a cut-off low over New Mexico with a front draped north-to-south across the western counties of the CWA. By mid to late morning, strong and severe storms developed along the front as a lobe of energy rotated into west Texas and forcing from this energy overspread the front. The atmosphere was already unstable and uncapped by this time. In addition, a Mesoscale Convective System in Oklahoma sent an outflow boundary south across the Red River. This outflow boundary moved south of the DFW Metroplex by the late morning hours, and isolated storms began to develop south of the outflow boundary but east of the front. As these storms moved north and crossed the outflow boundary, the low level rotation increased and the storms quickly became tornadic. All of the tornadic storms were tied to this outflow boundary as it retreated north as a warm front. A historic North Texas tornado outbreak occurred on April 3rd, with 17 tornadoes developing from the DFW Metroplex east to Hopkins County. Event Narrative: Tree damage was reported around the Bank of America building in Arlington; near the intersection of Ballpark Way and E Lamar Blvd. A few trees had 2 diameter branches snapped off and at least one tree was broken off near the ground. An EF-0 tornado occurred in an unincorporated area just south of Denton. The tornado touched down in a wheat field southeast of the intersection of Country Club Road and Ryan Rd. The tornado was confirmed by photos, radar, and eyewitness evidence. Nickel sized hail fell at Hicks Airfield for approximately 10 minutes. Nickel sized hail was reported at Interstate 20 and Kelly Elliott Road. Baseball sized hail was reported near Duncan Drive in Irving. Hail stones ranging from the size of quarters up to teacup size was reported in Coppell. The hail fell for nearly 20 minutes with 2-3 hail falling for at least 10 minutes in some areas of the city. Golf ball sized hail was reported 1 mile south of The Colony. An EF-0 tornado with maximum estimated winds around 80 mph produced damage in the city of Coppell. The tornado began near the intersection of E Belt Line Rd and S Denton Tap Rd. The awning at a gas station was damaged at this intersection. The tornado moved to the northeast through a residential area causing minor damage to some roofs of homes and businesses and also damaging trees. The total path of the tornado was 2 miles long, but the damage path was non-continuous. The damage path was also narrow at about 75 yards wide. An EF-2 tornado began in Kennedale, and then moved north-northeast into Arlington. In its occlusion phase, the tornado curved back to the northwest; ending its track near the east shores of Lake Arlington along Waterview Drive. The path length of the tornado was 6.4 miles long with a width of approximately 150 yards. Damage from the tornado began near the Texas Raceway. Five manufactured homes were heavily damaged or destroyed near the racing strip. Moving to the north-northeast, the tornado produced sporadic damage to trees, power poles, and a storage facility as the storm organized rapidly. Part of the roof of a warehouse at a business on Tower Drive near Business 287 was torn off and tossed onto a city water tower nearby. The warehouse was also damaged by debris tossed by the tornado. Other businesses near this intersection were also damaged. Damage to residences began north of Sublett Rd. EF-2 damage was noted to a few homes between Sublett Rd and Hwy 287, but most areas received EF-0 or EF-1 damage. Approximately 143 homes and apartments sustained some type of damage in this area. Most of the homes appeared to have the initial failure at or near the garage, with subsequent damage coming to exterior walls or portions of roofs. Before the tornado crossed Hwy 287, it damaged the roofs of two buildings at the Chesterfield Apartments. Once the tornado crossed Hwy 287, it cut a path to the north-northeast causing mostly minor roof and fence damage to approximately 25-30 homes between Hwy 287 and Interstate 20. The tornado crossed Interstate 20 between Kelly Elliott Rd and Green Oaks Blvd. First the tornado damaged a church on the north side of the interstate, then the tornado went on to do significant damage in the Oldfield neighborhood just north of Interstate 20 near Martin High School. Approximately 100 homes were damaged in this neighborhood with an additional 85 damaged in the surrounding areas. Several homes experienced significant damage to garages and progressive failure of garage walls and portions of roofs. A few residences in this neighborhood along Haverford Dr and Thorncliffe Dr sustained EF-2 damage. Large trees were also uprooted in the neighborhood. The damage path continued to the north from this area with several other homes and trees sustaining damage near Little Road. Just west of Martin High School, the tornado began to occlude and turn northwest. At this point, near Green Oaks Boulevard and Chaperito Street, a nursing home suffered significant roof and outside wall damage, with the initial failure occurring near a large window. Nearly all of the residential damage in Kennedale and Arlington was EF-0 or EF-1. Only a small portion of the damage path suffered EF-2 damage. A total of 5 homes in Kennedale and 13 homes in Arlington were determined to be destroyed. Another 44 homes sustained major damage and 247 sustained minor damage. An additional 273 residences were affected by the storms on this day. Maximum estimated winds with the tornado were 135 mph. Eight people sustained injuries from the tornado, but only one of those injured was considered severe. Quarter sized hail was reported at Interstate 635 and Beltline Road near Coppell. Quarter to ping pong ball sized hail was reported in Burleson near Interstate 35 and the Wilshire Blvd exit. Golf ball to baseball sized hail damaged many aircraft at DFW International Airport. Around 110 aircraft from various airlines were damaged, but the airport was not damaged. The impacts from the storm affected air travel for several days after the event due to the damage done to the aircraft. Hail up to the size of baseballs was reported on the north side of Irving. Golf ball sized hail was reported near Lake Lewisville. Hen egg sized hail was reported near State Highway 121 and MacArthur Blvd in Lewisville. One to two inch hail was reported in several areas of Frisco by amateur radio and trained spotters. The hail fell for several minutes. Quarter sized hail was reported on the west side of Frisco. Small tree branches were broken by RFD winds associated with a tornadic supercell near the intersection of Airline Dr and Executive Dr in Coppell. A brief tornado occurred down in open field approximately 2 miles southeast of Spinks Airport. This tornado was observed by at least 2 storm chasers and the airport manager. Damaging thunderstorm winds, likely associated with the RFD of a tornadic supercell, removed some metal panels from the roof of a motel near Highway 183 and Estrada Pkwy in Irving. Golf ball sized hail was reported in Euless. Baseball sized hail was reported in Euless. Ping pong ball sized hail fell in Irving. Quarter sized hail was reported on the south end of Lake Lewisville. Golf ball sized hail was reported in The Colony. RFD winds associated with a tornadic supercell ripped shingles off a church near E Belt Line Rd and Ingle Way in Coppell. Some letters from the church sign were also removed. An EF-0 tornado occurred in the northern portions of Grand Prairie with maximum estimated winds around 85 mph. The tornado began just south of the intersection of Highway 360 and East Avenue K. As the tornado traveled northeast, it damaged the roofs of a few warehouse buildings and a strip mall. It also knocked over some light and electric poles. The tornado lifted just past Westpark Drive with a path length just under a half of a mile. Quarter to baseball sized hail was reported at the Fort Worth CWSU. Hen egg to tennis ball sized hail was reported in the area just northeast of Dallas-Fort Worth International Airport; around the intersections of Interstate 635 & Royal Lane and Interstate 635 & Belt Line Rd. Many cars were dented and many car windshields were broken. The COOP Observer in Frisco reported golf ball sized hail. An EF-0 tornado with maximum estimated around 85 mph occurred in west Irving. The twister damaged a metal awning at a house and uprooted trees along Avenida Loop by the Irving Mall. Continuing to the northeast, the twister damaged part of the roof of the Goodwill store on N Belt Line Rd and blew HVAC units off the rooftop of the store. Wood power poles were leaning near W Rochelle Rd and N Belt Line Rd. Near the end of the track, trees were uprooted and minor damage was noted at Townsell Elementary School. Two air conditioning units at the school were damaged and so was a gas line. The path length was non-continuous and was approximately 1.3 miles long with a narrow width of 30 yards.