FloodZoneMap.org

Flash Flood — Karnes, TX

Oct 14, 2021

A complicated weather pattern developed over South Central Texas when a dryline and cold front moved out of West Texas as an upper level low moved into the Central Plains. At the same time the remnants of Pacific Hurricane Pamela moved across northern Mexico. The airmass over the region was warm and moist with near record precipitable water values. This set up led to an excessive rain episode with considerable flash flooding and river flooding.

Source: NOAA National Weather Service Storm Events Database (event 988295). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Karnes, TX

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

View Karnes County flood data →

More Flood Stories

Flash Flood$200K damage

Karnes, TX · Oct 18, 1998

The Great October FloodIn advance of a very slow-moving upper level trough of low pressure over West Texas, a cold front drifted slowly southeastward into West Central Texas during the evening of Friday, October 16th.

Read the full account →
Flood$3.0M damage

Karnes, TX · Oct 17, 1998

Flooding along the San Antonio River, Cibolo Creek and Geronimo CreekIn Bexar County, the San Antonio River begins just below Olmos Dam where it merges with spring flow.

Read the full account →
Flash Flood$100K damage

Karnes, TX · Oct 18, 1998

The Great October FloodIn advance of a very slow-moving upper level trough of low pressure over West Texas, a cold front drifted slowly southeastward into West Central Texas during the evening of Friday, October 16th.

Read the full account →
Flash Flood$200K damage

Karnes, TX · Aug 16, 2007

Tropical Storm Erin moved inland near Port Aransas on the morning of August 16 and continued toward the northwest, in the general direction of San Antonio.

Read the full account →