Flash Flood in Harrison County, Texas
Flash Flood June 11, 2025 · Harrison County, Texas
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Flash flooding reported with water covering the road on Highway 80 between Marshall and Hallsville.
The wider storm
Numerous thunderstorms developed along and ahead of a persistent MCS in East Texas during the afternoon of June 11th. Thunderstorms began training ahead of the MCS, and the overlapping segments of heavy rainfall resulted in scattered flash flooding across parts of Smith County and Harrison County. Hourly rainfall rates within this activity were estimated at nearly 3 inches per hour. The uptick in convective coverage and intensity was due to the thunderstorms training along a NW-SE oriented instability axis characterized by 1000-3000 J/kg MLCAPE, 2-2.25 inch precipitable water values, and 20-30 knots of southwesterly effective shear amid a variety of convergence boundaries analyzed across the region. As a result, flash flooding occurred in the more urban locations of Tyler in Smith County and near Marshall in Harrison County.
Began near Hallsville (32.5200, -94.5100).
Source: NOAA Storm Events Database, event 1272213. Narratives are written by the National Weather Service forecast office that issued the report.
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