National Weather Service Issues FLOOD WATCH Over Concerns about Flooding from Another Rain Event

FLOOD WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING... 

 The National Weather Service in Nashville has issued a 

• Flood Watch for a portion of Middle Tennessee, including the following areas, Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland, Davidson, De Kalb, Dickson, Fentress, Giles, Grundy, Hickman, Houston, Humphreys, Jackson, Lawrence, Lewis, Macon, Marshall, Maury, Montgomery, Overton, Perry, Pickett, Putnam, Robertson, Rutherford, Smith, Stewart, Sumner, Trousdale, Van Buren, Warren, Wayne, White, Williamson, and Wilson. 
• From Wednesday afternoon through Thursday morning 
• 2 to 4 inches of rain. 
• Runoff from this event will likely cause rises of smaller creeks and streams, especially Wednesday evening when thunderstorms may produce flash flooding. Minor flooding may also be possible on the larger rivers into the weekend, especially on the lower reaches of the Cumberland, Duck, and Tennessee River basins. 

NWS says expect flooding from creeks and

Streams. (file photo) 

HYDROLOGIC OUTLOOK:
Heavy Rainfall Expected Across Much of the Mid-South From Early Wednesday Through Thursday Afternoon.

Rainfall is expected to return to Middle Tennessee early Wednesday, falling on saturated grounds unable to absorb much more. Area creeks, streams, and rivers are running high and a number of river gauge locations are above Action Stage. Rain is expected to move out Thursday afternoon, leaving total rainfall amounts of several inches across the area. 

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Runoff from this event will likely cause rises of smaller creeks and streams, especially Wednesday evening when intense thunderstorms may produce flash flooding. Minor flooding may also be possible on the larger rivers into the weekend, especially on the lower reaches of the Cumberland, Duck, and Tennessee River basins. 

Model guidance indicates storm total rainfall amounts of 2 to 4 inches can be expected, with isolated higher amounts possible. Where the rain falls vary from Southern Kentucky and most of Tennessee to Northern Mississippi and Northern Alabama. This lack of consistency with where the rain will fall creates uncertainty with total rainfall amounts, as well as the severity of flooding.

NOAA Special Weather Statement for 3-25-17 Rain could cause localized flooding.

Heavy showers and isolated thunderstorms may produce localized
flooding over parts of eastern Middle Tennessee tonight.

Early tonight, a slow moving band of showers and isolated
thunderstorms was located between Interstate 65 and the
Cumberland Plateau. Doppler radar indicated that some spots
received about a third of an inch of rain during the
evening hours...and some areas could receive an additional one
half to three quarters of an inch overnight. Localized rain
totals over an inch are possible tonight...especially over the
southeast...around Shelbyville, Manchester, Altamont and
McMinnville. Some isolated spots further north, toward Cookeville
and Gainesboro could see similar rain amounts.

These rains may cause water to pond in low lying areas, especially
in urban locations. If you are out driving tonight, you should
avoid areas where water covers the road. If you come upon a
flooded area, turn around and take an alternate route to your
destination.