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What to expect over the next 36 hours.
Active Weather Watch

Flood, severe storm threat for the South. Timing here


Monday, February 20, 2017, 5:02 - Heavy rain and the risk for severe storms continues across the South after severe storms spawned four tornadoes in central Texas Sunday.

Clean-up efforts continue for the region which suffered from downed trees, ravaged homes, and flying debris overnight Sunday. More than 150 homes were damaged in San Antonio, according to Reuters.

Here's what you need to know.

Timing: What's Next

A surface low-pressure system is forecast to lift from the Southern Plains through the Great Lakes, according to the Climate Prediction Center (CPC). This pattern will ultimately favor heavy rain -- localized rainfall totals of 3 inches or greater in a 24-hour period -- across portions of the Southeast, the Middle Mississippi Valley, the Lower Mississippi Valley, the Southern Plains and the Tennessee Valley Monday into Tuesday, shifting eastward to parts of Florida on Wednesday.

Click play to watch below: Storm track

"[A] slow-moving upper-level low and surface frontal system will bring showers and thunderstorms from the central Gulf Coast to the Great Lakes [Monday night] and Tuesday morning," The National Weather Prediction Center (WPC) said in a statement Monday evening. "Storms could produce heavy rainfall across the central Gulf Coast. The northern end of the system will spread a mix of scattered light rain, freezing rain, and snow into portions of the Northeast late Tuesday as well."

Heavy rainfall may increase the threat for flash flooding, adds the WPC.


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Accumulations

The map below shows average precipitation amounts from Tuesday, Feb. 21 to Friday, Feb. 24 (NOAA):


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Impact

Heavy rainfall in a short period may lead to some areas experiencing flash flooding, say forecasters. In addition, high winds would likely be directed onshore so precaution should be taken regarding flooding potential especially along low lying coastal areas.


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Severe storm risk

Severe storm reports from Sunday were limited to Texas and Oklahoma, with thunderstorms a little more widespread. Areas from Minnesota down to Louisiana remain under a thunderstorm risk Monday, with a marginal risk limited to southeastern Texas and Louisiana. The major threats with these storms are powerful winds and tornadoes. For updates on warnings, monitor the ALERTS page of our website.

If you come across a flooded roadway, do not attempt to drive through it. 

This will be a slow-moving system as it tracks eastward into Florida. The system is expected to push offshore early Thursday morning.


KEEP ON TOP OF ACTIVE WEATHER: Visit the Alerts section of the website


Watch below: Long range forecast


With files from Daksha Rangan and Leeanna McLean.

Source: Climate Prediction Center, National Weather Service

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