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AccuWeather's Jon Porter says much of Texas and the lower Mississippi Valley is expected to be drenched with rounds of thunderstorms and heavy rain, generating the threat of flash flooding.
Transcript
00:00This is something you and I've been talking about all week and I know you're concerned
00:04about the flash flood threat in Texas. We are Bernie and it may not be a widespread event
00:11but the concern is that in some localized areas there can be some pretty serious flash flooding
00:16because we've got a deep feed of tropical moisture directed right at Texas and a slow moving upper
00:23low and Bernie as you always say we don't trust upper level lows. Look at the precipital water
00:28John. You know for our viewers if the atmosphere was a rag and you wrung out all the moisture
00:34out of the rag and you collected it that's what the precipitable water and those high moisture
00:41content levels are very concerning. They are very concerning and look where they're set up all the
00:47way from the Rio Grande to Texas Hill Country up toward the Dallas Fort Worth area and even southern
00:52Oklahoma and look at where the air is coming from. It's coming from all the way back to the Caribbean
00:57with a direct feed right up into this area and that's why we're concerned with such high octane
01:02moisture around the risk for flash flooding and persistent downpours is certainly going to be
01:07there. We've already seen it in parts of Texas this from a couple days ago but you could see that
01:13upper
01:13low John south of El Paso so you have the low level moisture. Look at all the blue and the
01:19white
01:19coming on in and the problem is John we have about a minute John that the upper low is going
01:25to be a
01:25very slow mover. That's correct it is moving though thankfully and this would be a more serious situation
01:32if it wasn't moving along so that it is in west Texas today and then shifts up toward north Texas
01:39into tomorrow. And when you look at the future radar here's the concerning thing watch how the
01:44thunderstorms just blossom today and what I don't like John they're oriented the thunderstorms from
01:49south to north and they're moving in that direction. Right that means repeated downpours
01:53over the same areas and notice it's not everywhere but into those near those thunderstorms there could
01:58be rain rates of one to two inches per hour that can result in some serious flash flooding in some
02:03areas especially near the Rio Grande and in the hill country where an area that's particularly
02:08susceptible to flash flooding Bernie then that shifts into north Texas as we head into tomorrow.
02:13Anywhere in that green John that's the concern we have about 10 seconds here.
02:17That's right watch out Rio Grande to hill country up to the Dallas Fort Worth metroplex that's where
02:22we're most concerned.
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