the ten-story Mallick Tower, causing the building to lose most of its glass exterior. High-speed debris thrown up by the tornado broke windows in adjacent low-rise office and condominium buildings. Similar damage occurred to several other high-rises including the 35-story Bank One Tower, which lost 80 percent of its 3,000 windows; the Union Pacific Resources Building lost 1,300 of its 5,000 windows. The tornado eventually dissipated at 6:28 p.m. CST (00:28 UTC) near Interstate 35W after having spent 10 minutes on the ground over a path and wide path. Across Fort Worth, 212 homes were damaged, of which 28 were destroyed. Although the tornado dissipated just east of downtown Fort Worth, the parent supercell thunderstorm continued to cause damage, albeit minor and sporadic, to roofs, trees, fences, and billboards roughly near Interstate 30 and Brentwood Stair Road. Arlington, Texas After the Fort Worth tornado dissipated, another thunderstorm developed over Johnson County, tracking northeastward into Tarrant County and eventually merging with the supercell that had produced the earlier F3 tornado. The new development prompted the re-issuance of the tornado warning for Tarrant County at 6:40 p.m. CST (00:40 UTC). At 7:05 p.m. CST (01:05 UTC), the Arlington tornado touched down on South Cooper Street, causing initial damage to a restaurant; the tornado's touchdown coincided with the appearance of a tornado vortex signature on radar imagery. Well-built homes within a residential area along Embercrest Drive sustained widespread damage, with some houses experiencing up to F3-rated damage; such damage occurred after garage doors failed, allowing tornadic winds to unroof homes and push out exterior walls. As a consequence, homes that faced the tornadic winds sustained more damage than homes whose attached garages were sheltered from the strong winds. After crossing Matlock Road, the tornado did additional damage to one- and two-story homes in another subdivision, producing F3 damage. Many homes suffered the collapse of brick masonry walls due to poor construction as they were not properly anchored to the homes' frames. The tornado then swept across northern portions of the Arlington Municipal Airport, dealing F2 damage before briefly paralleling Interstate 20. At 7:12 p.m. CST (01:12 UTC), the tornado crossed the interstate, overturning at least one 18-wheeler. The tornado continued to track northeast, causing F2 damage to a subdivision northeast of Grand Prairie Municipal Airport in Dallas County before dissipating at 7:20 p.m. CST (01:20 UTC). See also List of tornadoes striking downtown