Flood Potential Outlook
Issued by NWS Nashville, TN

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FGUS74 KOHX 301051

Hydrologic Outlook
National Weather Service Nashville TN
551 AM CDT Wed Aug 30 2017

...Remnants of Tropical Storm Harvey Will Bring Heavy Rainfall to
the Mid-State Wednesday Through Early Saturday...

Summary and Timing...

The remnants of Tropical Storm Harvey will impact the region
beginning on Wednesday and continuing through early Saturday
morning. A first wave of precipitation will move through the area
Wednesday through early Thursday, with the second wave moving in
Thursday afternoon through Friday evening. The low pressure area
will continue its track to the northeast Saturday, with rain
chances diminishing considerably.


The first wave of rainfall will sweep into southern Middle
Tennessee this afternoon and evening, then push into northern
areas late tonight and Thursday morning. Rainfall totals over the
area are expected to range mainly between one and one and a half

The second wave will bring the heaviest rainfall, and will last
from Thursday through Friday evening. The heavy rains will spread
into areas west of I-65 during the day Thursday, then spread
eastward into other sections of the Mid-State Thursday night into
Friday. The heaviest rainfall is generally expected to occur in
areas north of Interstate 40 and west of Interstate 65...where
additional rainfall of 4 to 7 inches is forecast. Additional
rainfall amounts of 1 to 3 inches are expected elsewhere.

Storm total rainfall, from Wednesday through Friday evening, will
range from around 2 inches over the Cumberland Plateau, to
between 6 and 8 inches over the extreme northwest...including
Clarksville and parts of the lower Cumberland River Basin.


The first wave of rainfall today and tonight will moisten soils
considerably, but it is the second wave of heavier rains Thursday
and Friday that will stand the greatest chance of producing flood
problems for the Mid-State. Creeks and rivers may rise and get to
action/flood stage Friday through Sunday, depending on timing of
heaviest rainfall and if Harvey slows slightly to drop additional
rainfall. In addition, as soils become increasingly saturated over
the next several days, local flash flooding could develop,
especially in poorly drained low lying areas.


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