Dallas texas flash floods Dallas area hit by 1-in-1,000-year flood; cars float in water-filled roads

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dallas texas flash floods Dallas area hit by 1-in-1,000-year flood; cars float in water-filled roads:Flash floods struck the Dallas-Fort Worth area overnight into Monday, with flooded roads requiring salvage endeavors as pictures showed deserted vehicles drifting down immersed roads. In certain areas, the precipitation sums would be viewed as a 1-in-1,000-year flood.

Rain continues to fall in and around Dallas; some rainfall gauges in the area have recorded more than 10 inches thus far. A record-breaking 3.01 inches of rain was also recorded in one hour at Dallas-Fort Worth International Airport. The National Weather Service in Fort Worth warned of continued risk for “life-threatening flash flooding,” extending its flash flood warning in and around Dallas County until 10 a.m. Central time.

Dallas texas flash floods Dallas area hit by 1-in-1,000-year flood; cars float in water-filled roads

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The risk of damage from the floods is “considerable,” it said, warning residents not to drive on flooded roads and to move immediately to higher ground. Flash flood warnings have also been issued for Fort Worth and Canton, Tex.

In some isolated cases, the rainfall would qualify as a 1-in-1,000 interval flood. The downpour marked the latest such flood that has occurred over the past few weeks across the United States. In one week alone, three 1-in-1,000-year rain events occurred — inundating St. Louis, eastern Kentucky and southeastern Illinois. While controversial, the term is used to describe a rainfall event that is expected once in every 1,000 years, meaning it has just a 0.1 percent chance of happening in any given year.

Jeff Lindner, a meteorologist for Harris County, Tex., noted on Twitter that one weather conditions measure recorded almost 40% of its common yearly precipitation in only 12 hours.

Dallas texas flash floods Dallas area hit by 1-in-1,000-year flood; cars float in water-filled roads

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Sometime thereafter, that equivalent measure counted over 12.6 creeps of downpour, still in 12 hours or less.

Water levels at Trinity River in Dallas are supposed to enter minor flood stage Monday into Tuesday.

Such paces of precipitation are almost outside the realm of possibilities for soils — also impenetrable cleared surfaces — to assimilate without spillover that can cause streak flooding.

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The heavy rainfall across Texas, Arkansas, Louisiana and Oklahoma stems from an overlap of extreme moisture and a forceful triggering mechanism.

Over the weekend, an underwhelming tropical system moved ashore in northern Tamaulipas, Mexico, with relatively little fanfare. Its direct impacts were minimal, but it trucked ashore an air mass replete with deep tropical moisture. PWATs, or precipitable water indexes — a measure of how much moisture is present in a column of air from the bottom to the top of the atmosphere — are approaching a remarkable three inches.

That’s the air wafting north into thunderstorms and being converted into heavy downpours along a stationary front. The front is draped west to east near the Red River of Oklahoma toward the Arkansas-Louisiana border. A wave of low pressure that is forming along the front and propagating east will further enhance those downpours. Some locations will see a low-end tornado risk, too.

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Dallas texas flash floods Dallas area hit by 1-in-1,000-year flood; cars float in water-filled roads

When flooding struck the Dallas area, parts of north-central and northeastern Texas were under flood watches — an alert level that is below flood warnings — until noon Central time Monday, including Dallas, Rockwall and Delta counties. The NWS warned of “rainfall totals of 2 to 5 inches, with isolated amounts in excess of 8 inches.”

Local news outlets and reporters shared videos of a water rescue on a flooded highway in the Dallas area. People swam in murky floodwaters, their vehicles abandoned on roadsides with their alarms blaring.

dallas texas flash floods Dallas area hit by 1-in-1,000-year flood; cars float in water-filled roads:Flash floods struck the Dallas-Fort Worth area overnight into Monday, with flooded roads requiring salvage endeavors as pictures showed deserted vehicles drifting down immersed roads. In certain areas, the precipitation sums would be viewed as a 1-in-1,000-year flood.

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