Flash Flood Warning in Effect: Live Map Reveals High-Risk Zones and Must-Know Safety Steps

A rapidly deepening storm system marching from the southern Plains to the Great Lakes has triggered a broad Flash Flood Warning and multiple Severe Thunderstorm Warnings on Wednesday, March 4, 2026. The National Weather Service (NWS) says slow-moving storm cells are dropping 2–4 inches of rain in pockets of Texas, Arkansas, Kentucky, Indiana and Ohio, overwhelming creeks and low-lying roads. Why today’s flash-flood threat is so high • A stalled frontal boundary draped across the Ohio Valley is acting like a conveyor belt, feeding repeated rounds of downpours over the same neighborhoods. • Gulf moisture riding a strong low-level jet is pushing atmospheric water vapor to late-spring levels, super-charging rainfall rates to more than two inches per hour in the heaviest cores. • Forecasters expect a fresh surge of thunderstorms to ignite this afternoon from the Ark-La-Tex into the Mississippi Valley, then arc northeast overnight, prolonging the flood risk into Thursday morning. Areas under Flash Flood Warning (as of 2 p.m. CST) 1. Dallas–Fort Worth metroplex and the I-35 corridor in North Texas 2. Little Rock, Arkansas, east to Memphis, Tennessee 3. Louisville, Kentucky, northward through southern Indiana and western Ohio 4. Cincinnati metropolitan area and surrounding counties What residents should do now • Turn on Wireless Emergency Alerts and local TV or NOAA Weather Radio; warnings may arrive in the middle of the night when storms back-build. • Never drive across a water-covered roadway—“Turn Around, Don’t Drown” applies even if water looks shallow. Six inches of moving water can stall a car; one foot can sweep most vehicles downstream. • If you live near a creek or urban drainage ditch, prepare to move to higher ground quickly. Flash flooding develops within minutes once rainfall rates exceed soil absorption. • Check your sump pump and clear storm drains. Urban flooding often begins when leaves or trash block curb inlets. Short-term forecast highlights • Texas and Oklahoma: Storm Prediction Center keeps a Slight Risk for severe storms capable of hen-egg-size hail and 60–70 mph wind gusts through sunset. Any storm that trains over the same spot for 30+ minutes will flash-flood. • Ohio Valley: Rainfall totals may climb past 5 inches before the boundary lifts north Thursday afternoon, with significant rises expected on the Ohio, Licking and Muskingum Rivers. • Central Kansas on Thursday: As the upper-level wave ejects, the flash-flood threat shifts west; fresh warnings are likely from Dodge City to Salina. Looking ahead Computer models suggest the frontal zone will finally sweep east of the Appalachians late Thursday night, ending the immediate flash-flood threat. However, saturated ground will keep smaller rivers in flood through the weekend. Monitor new advisories if you live along the Ohio or Wabash Rivers. Bottom line: Today’s Flash Flood Warning is not routine. If a warning is issued for your county, move to higher ground immediately and stay off the roads until water recedes. Acting quickly can save lives when waters rise with little or no notice.