FloodZoneMap.org

Flash Flood — Collin, TX

Dec 26, 2015

A potent storm system brought deadly tornadoes and severe weather to North Texas on the 26th followed by waves of heavy rainfall that resulted in significant flooding across parts of North and Central Texas. Twelve tornadoes were confirmed on the afternoon and evening of the 26th, killing 13 and injuring over 300. The strongest tornado was an EF-4 that struck the Garland and Rowlett areas of Dallas and Rockwall County and where most of the fatalities occurred. Then the waves of heavy rain persi

Source: NOAA National Weather Service Storm Events Database (event 611676). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Collin, TX

This event is one of many recorded floods in Collin County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Collin County flood data →

More Flood Stories

Flash Flood$50K damage

Collin, TX · Jun 3, 2025

On June 3 and 4, a cold front and a dryline served as focal points for thunderstorm development across North and Central Texas. These storms were associated with several instances of severe weather and flooding.

Read the full account →
Flash Flood$50K damage

Collin, TX · Jun 3, 2024

Upper level disturbances interacted with leftover surface outflow boundaries from nocturnal MCSs and allowed for scattered strong to severe storms across the region each afternoon from June 1st to June 3rd.

Read the full account →
Flash Flood

Collin, TX · May 30, 2024

Another complex of thunderstorms moved southeast through North and Central Texas during the day on May 30, producing scattered wind damage and severe hail along with some flash flooding.

Read the full account →
Flash Flood

Collin, TX · May 28, 2024

On the heels of the May 27th evening hail event, another batch of thunderstorms developed near the Red River during the overnight hours as a shortwave trough moved through the Plains.

Read the full account →