Areal Flood Advisory 71, NWS Nashville, TN

Area Forecast Discussion
National Weather Service Nashville TN
841 PM CDT Sat Jul 31 2021

.UPDATE...
FOR EVENING DISCUSSION.

&&

.DISCUSSION...

2nd complex arriving a little ahead of schedule and is on the KY
TN border. Storms have been sub severe, a report of dime size
hail was recently received at white bridge TN. Overall, the
forecast appears to be on track although maximum pops will be
achieved slightly ahead of schedule. Dewpoints are in the mid 70s
now and have been increasing in conjunction with the onset of
convection. No changes to forecast at this time. at this point it
looks like scattered strong storms for the mid state instead of
severe.

&&

.AVIATION...
00Z TAF DISCUSSION.

Capped atmosphere beginning to give way to some added forcing in
the northwest. Will include a vcts group for CKV initially. Otw,
vcts will be utilized within the next few hours for the taf
sites. An MCS will be pushing southeastward toward the taf sites
later this evening. Shower and thunderstorms will become more
widespread generally after 03Z. Cigs aob 3 kft will be commonplace
with the increased precipitation coverage. Atmosphere will
stabilize with just rain showers expected aft 10Z. The
precipitation should end from north to south aft 18Z.

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

DISCUSSION......21
AVIATION........21

Hazardous Weather Outlook
National Weather Service Nashville TN
501 AM CDT Sat Jul 31 2021

TNZ005>011-023>034-056>066-075-077>080-093>095-011015-
Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Pickett-Houston-
Humphreys-Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson-
Putnam-Overton-Fentress-Perry-Hickman-Lewis-Williamson-Maury-
Marshall-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee-
Warren-Grundy-Van Buren-Wayne-Lawrence-Giles-
501 AM CDT Sat Jul 31 2021

This Hazardous Weather Outlook is for Middle Tennessee.

.DAY ONE...Today and tonight.

A Heat Advisory continues this afternoon for counties south of I-40
and west of I-65. Heat Index values around 106 are expected.

Some strong to severe thunderstorms may be possible late Saturday
afternoon through the early morning hours Sunday. Main concerns with
any strong thunderstorm development will be gusty strong winds as
well as heavy rainfall which could lead to localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Some showers and a few thunderstorms in the morning Sunday may
produce heavy rain and localized flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

06

Special Weather Statement
National Weather Service Nashville TN
916 PM CDT Sat Jul 31 2021

TNZ007-008-026>028-010315-
Robertson TN-Davidson TN-Wilson TN-Cheatham TN-Sumner TN-
916 PM CDT Sat Jul 31 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DAVIDSON...SOUTHWESTERN
SUMNER...NORTHERN WILSON...NORTHEASTERN CHEATHAM AND SOUTHERN
ROBERTSON COUNTIES UNTIL 1015 PM CDT...

At 916 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near White House to near Coopertown. Movement
was southeast at 35 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Gallatin, Lebanon, Springfield, Madison, Hendersonville, Mount
Juliet, Goodlettsville, White House, Millersville, Greenbrier,
Coopertown, Lakewood, Ridgetop, Hermitage, Belinda City, Old Hickory,
Joelton, Rural Hill, Pleasant View and Green Hill.

This includes the following highways...
 Interstate 40 between mile markers 212 and 245.
 Interstate 65 between mile markers 86 and 110.
 Interstate 24 between mile markers 25 and 52.
 Interstate 840 between mile markers 75 and 76.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3619 8612 3610 8670 3649 8712 3652 8668
TIME...MOT...LOC 0216Z 305DEG 29KT 3649 8674 3645 8704

Shamburger

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
942 PM CDT SAT JUL 31 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0842 PM     TSTM WND DMG     OAK HILL                36.08N  86.79W
07/31/2021                   DAVIDSON           TN   SOCIAL MEDIA

            TREES UPROOTED AND SOME SMALL HAIL. TREES ON A HOUSE
            AND THE ROAD.

&&

EVENT NUMBER OHX2100566

21

Special Weather Statement
National Weather Service Nashville TN
948 PM CDT Sat Jul 31 2021

TNZ006-023>026-010315-
Dickson TN-Humphreys TN-Cheatham TN-Montgomery TN-Houston TN-
948 PM CDT Sat Jul 31 2021

...SIGNIFICANT WEATHER ADVISORY FOR DICKSON...SOUTHERN MONTGOMERY...
CENTRAL CHEATHAM...SOUTHEASTERN HOUSTON AND NORTHEASTERN HUMPHREYS
COUNTIES UNTIL 1015 PM CDT...

At 948 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles southwest of Clarksville to near
McEwen. Movement was southeast at 45 mph.

Wind gusts over 50 mph will be possible with these storms.

Locations impacted include...
Dickson, Ashland City, White Bluff, McEwen, Burns, Pleasant View,
Charlotte, Vanleer, Slayden, Cheatham Dam, Palmyra and Cunningham.

This includes the following highways...
 Interstate 40 between mile markers 167 and 180.
 Interstate 840 between mile markers 1 and 4.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3635 8698 3596 8724 3599 8743 3617 8770
      3649 8748
TIME...MOT...LOC 0248Z 296DEG 41KT 3643 8743 3617 8760

Shamburger

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PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE TN
1053 PM CDT SAT JUL 31 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0732 PM     TSTM WND DMG     10 SSE CLARKSVILLE      36.43N  87.28W
07/31/2021                   MONTGOMERY         TN   LAW ENFORCEMENT

            A FEW TREES DOWN IN THE SOUTHEASTERN PORTION OF THE
            COUNTY.

0842 PM     TSTM WND DMG     OAK HILL                36.08N  86.79W
07/31/2021                   DAVIDSON           TN   SOCIAL MEDIA

            TREES UPROOTED AND SOME SMALL HAIL. TREES ON A HOUSE
            AND THE ROAD.

1010 PM     TSTM WND DMG     BURNS                   36.05N  87.31W
07/31/2021                   DICKSON            TN   SOCIAL MEDIA

            TREE DOWN IN BURNS.

1026 PM     FLASH FLOOD      NASHVILLE               36.17N  86.78W
07/31/2021                   DAVIDSON           TN   SOCIAL MEDIA

            2 FEET OF WATER AT THE INTERSECTION OF 3RD AVENUE AND
            CRUTCHER IN EAST NASHVILLE.

&&

EVENT NUMBER OHX2100565 OHX2100566 OHX2100567 OHX2100568

21