Special Weather Statement, NWS Nashville, TN

Area Forecast Discussion
National Weather Service Nashville TN
928 PM CDT Sat Mar 27 2021

.UPDATE...
FOR EVENING DISCUSSION.

&&

.DISCUSSION...

Updated suite of forecast products to mention tornado watch 64 for
Perry and Wayne Counties until 4 AM CDT Sunday. Tornado watch
59 expired for other selected counties across southern Middle
Tennessee as of 9 PM CDT. Tweaked hourly temperature, dewpoint,
and wind speed/ direction grids and blended them with associated
forecasted late evening through overnight hours.

&&

.AVIATION...
00Z TAF DISCUSSION.

CKV/BNA/MQY/CSV...Several admendments probable through 28/24Z,
mainly up to 28/16Z when shwrs and tstms are expected to finally
move east of mid state region. Best potential for heavy rainfall
impacts MQY and CSV, lightest amounts CSV. Initial sfc E/SE winds
will veer to NW by 28/18Z. Continuance of strong surface pressure
gradient influences will allow gusts to around 20kts at times.
Mainly VFR, MVFR during rainfall events, vsbys expected. Ceilings
will fluctuate between VFR/MVFR thresholds. LLWS expected to be
pronounced enough CSV around 28/05Z to support 40kt wind shear
at top of 2 KFT Layer.

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch through Sunday evening for 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-Wilson.

&&

DISCUSSION......JB Wright
AVIATION........JB Wright

Hazardous Weather Outlook
National Weather Service Nashville TN
1229 PM CDT Sat Mar 27 2021

TNZ005>011-023>034-056>066-075-077>080-093>095-281730-
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-
1229 PM CDT Sat Mar 27 2021

This Hazardous Weather Outlook is for Middle Tennessee.

.DAY ONE...This afternoon and tonight.

Severe thunderstorms will be possible across all of Middle
Tennessee this afternoon into tonight. Damaging winds, large hail,
and isolated tornadoes will all be possible. Additional rounds of
heavy rainfall expected through tonight and overnight. Additional
rainfall amounts of 1 to 4 inches, with locally higher amounts of 5
to 6 inches, expected on already saturated ground conditions.

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

River impacts from rainfall today and early Sunday morning will be
possible. Some local rivers are expected to reach up to moderate
flood stage by early next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed. Please relay any
information about observed severe weather to the NWS while following
all local, state, and CDC guidelines.

09

Special Weather Statement
National Weather Service Nashville TN
1113 PM CDT Sat Mar 27 2021

TNZ008-027>030-062-280445-
Rutherford TN-Davidson TN-Wilson TN-Trousdale TN-Sumner TN-Smith TN-
1113 PM CDT Sat Mar 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL SMITH...SOUTHEASTERN
DAVIDSON...NORTHWESTERN RUTHERFORD...SOUTHEASTERN SUMNER...WILSON AND
WESTERN TROUSDALE COUNTIES UNTIL 1145 PM CDT...

At 1112 PM CDT, Doppler radar was tracking a strong thunderstorm over
Rural Hill, or 12 miles southwest of Lebanon, moving northeast at 55
mph.

Pea size hail will be possible with this storm.

Locations impacted include...
Gallatin, Lebanon, Hartsville, Hendersonville, Smyrna, La Vergne,
Mount Juliet, Lakewood, Hermitage, Rural Hill, Antioch, Belinda City,
Berry Hill, Green Hill, Tuckers Crossroads, Bledsoe Creek State Park,
Dickerson Chapel Recreation Area, Percy Priest Lake and Gladeville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3618 8601 3595 8662 3597 8662 3597 8665
      3600 8669 3615 8680 3647 8622
TIME...MOT...LOC 0412Z 241DEG 49KT 3613 8654

10

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1130 PM CDT SAT MAR 27 2021

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

1130 PM     FLASH FLOOD      NASHVILLE               36.17N  86.78W
03/27/2021                   DAVIDSON           TN   LAW ENFORCEMENT

            1ST FLOOR OF HOTEL FLOODED AT 95 WALLACE ROAD NEAR I-24
            AT HARDING PLACE

&&

EVENT NUMBER OHX2100368

SHAMBURGER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1131 PM CDT SAT MAR 27 2021

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

1129 PM     FLASH FLOOD      BRENTWOOD               36.00N  86.79W
03/27/2021                   WILLIAMSON         TN   EMERGENCY MNGR

            WATER RESCUES BEING CONDUCTED ON GRANNY WHITE PIKE IN
            NORTH BRENTWOOD

&&

EVENT NUMBER OHX2100369

SHAMBURGER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1135 PM CDT SAT MAR 27 2021

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

1135 PM     FLASH FLOOD      NASHVILLE               36.17N  86.78W
03/27/2021                   DAVIDSON           TN   FIRE DEPT/RESCUE

            NUMEROUS WATER RESCUES BEING CONDUCTED IN SOUTH
            NASHVILLE IN OAK HILL AREA AND EDMONDSON PIKE AREA

&&

EVENT NUMBER OHX2100370

SHAMBURGER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1137 PM CDT SAT MAR 27 2021

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

1137 PM     FLASH FLOOD      FRANKLIN                35.93N  86.84W
03/27/2021                   WILLIAMSON         TN   EMERGENCY MNGR

            NUMEROUS WATER RESCUES UNDERWAY IN WILLIAMSON COUNTY

&&

EVENT NUMBER OHX2100371

SHAMBURGER

Special Weather Statement
National Weather Service Nashville TN
1137 PM CDT Sat Mar 27 2021

TNZ008-027-028-059-280500-
Williamson TN-Davidson TN-Wilson TN-Sumner TN-
1137 PM CDT Sat Mar 27 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN DAVIDSON...SOUTH CENTRAL
SUMNER...NORTH CENTRAL WILLIAMSON AND WEST CENTRAL WILSON COUNTIES
UNTIL MIDNIGHT CDT...

At 1136 PM CDT, Doppler radar was tracking a strong thunderstorm over
Forest Hills, or 8 miles north of Franklin, moving northeast at 55
mph.

Half inch hail will be possible with this storm.

Locations impacted include...
Franklin, Lebanon, Nashville, Hendersonville, Brentwood, La Vergne,
Mount Juliet, Forest Hills, Oak Hill, Belle Meade, Lakewood,
Hermitage, Rural Hill, Bellevue, Antioch, Belinda City, Old Hickory,
Berry Hill, Green Hill and Percy Priest Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3623 8641 3612 8639 3608 8649 3610 8652
      3607 8652 3607 8653 3609 8655 3606 8655
      3607 8656 3606 8656 3594 8690 3606 8697
      3632 8655
TIME...MOT...LOC 0436Z 241DEG 49KT 3604 8686

10