EF3 Tornado — Howard, Texas
2016-05-22 · near Big Spring, Howard, Texas
Event narrative
A thunderstorm moved across Howard County and produced a tornado near Big Spring. Eyewitness reports from storm chasers and spotters in the area indicate that the tornado began at 6:13 pm CDT just south of Texas State Highway 176, approximately 10 miles west of Big Spring. The tornado then moved southeastward over open fields, bounded by Natural Dam Lake to its west and Wilkinson Road just to its east. The tornado continued on this southeast track along Salt Lake, eventually crossing Interstate 20 at approximately 6:32 pm CDT.
South of Interstate 20, the tornado exhibited erratic movement, being described by chasers and spotters as being nearly stationary in a field. Examination of radar imagery showed the primary storm circulation moved slowly southeastward to approximately half a mile northwest of the intersection of Lintner Road and Rockhouse Road by 6:37 pm CDT, before turning eastward. The tornado continued to move east, with the southern periphery of the tornado affecting Home #1. The tornado then began to move northeastward, crossing nearly directly over Home #2 around 6:40 pm CDT. A slight east northeast turn allowed for only the tornado's northern periphery to affect Home #3 along Cauble Road around 6:42 pm CDT.
The tornado moved southward along or near Cauble Road. The tornado continued its erratic behavior, moving southwestward and re-entering the same field as previous around 6:48 pm CDT. The tornado then turned west-northwestward, eventually becoming quasi-stationary just east of the Home #1 between 6:52 pm and 6:54 pm CDT, before moving westward, just north of Home #1. Residents at home #1 described how long the tornado lasted and felt the tornado had impacted them twice. The tornado dissipated approximately 1.5 miles west of Home #1 around 7 pm CDT.
The damage assessment team looked at several different indicators to determine tornado intensity. At Home #2, which likely was the closest and strongest structure to the tornado during the most intense portion of the tornado's life cycle, the entire roof was destroyed and exterior walls on this well-constructed residence were partially collapsed. This damage indicator suggests an EF-3 intensity with wind speeds estimated at 140-160 mph. In the adjacent field east of Home #2, a 640 type pump jack was blown over. The assessment team also looked at tree damage at Home #2. Both softwood and hardwood trees were viewed on the property. Damage to these large trees was indicative of high end EF-2 to low end EF-3 damage.
Home #1 and Home #3 experienced tornado damage indicative of EF-2 damage. In the examples shown, large sections of the roof were removed, but with the walls still standing. At Home #3, there were power poles that were snapped approximately five feet off the ground. Wind speeds at this residence are estimated at 115 to 125 mph. At Home #1, trees were uprooted. Wind speeds are estimated at this location of 105 to 115 mph. The cost of damage from this tornado is a very rough estimate.
Wider weather episode
West Texas was under the backside of a ridge with a dryline across the area which provided lift. Good instability, moisture convergence, and high convective available potential energy was present along and to the east of the dryline. Wind shear was also high over the area, and a low level jet of high winds allowed for storms to continue into the late evening hours. These conditions contributed to thunderstorms that produced large hail, strong wind, flash flooding, and tornadoes across the Permian Basin.
View location on OpenStreetMap → (32.2500, -101.6411)
Source: NOAA Storm Events Database, event_id 630910. Narrative written by the NWS forecast office that issued the report.