Hail and Damaging Winds in Tennessee, September 19, 2017

Name: Hail and Damaging Winds in Tennessee, September 19, 2017
Start: 2017-09-19T14:14
End: 2017-09-19T14:29
Location: Tennessee

September 19, 2017 · NWS OHX · 6 events in 2 counties and zones

Isolated showers and thunderstorms developed across Middle Tennessee during the afternoon and evening hours on September 19. One storm became severe in the Nashville metro area, with several reports of wind damage and hail received from southern Davidson and northern Williamson Counties.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $44,000
Crop damage: None recorded
Events: 6

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS OHX wrote it up.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Nashville, TN wrote its last area forecast discussion before the first event at Sep 19, 1:52 PM CST, 22 minutes earlier.

Area forecast discussion, Sep 19, 1:52 PM CST, 22 minutes before

Area Forecast Discussion
National Weather Service Nashville TN
252 PM CDT Tue Sep 19 2017

.DISCUSSION...

At mid afternoon, showers and thunderstorms covered the
Cumberland Plateau, with a few stragglers to the west. The
shortwave disturbance initiating this activity will move off to
the east early this evening, and with loss of heating, the
residual showers and storms should all come to an end by 10 PM.
We have not had any severe storms, but there have been reports of
heavy downpours, frequent lightning, and small hail. Later
tonight, skies will clear, but the very muggy air will remain. So,
we expect fog development, with some dense fog, especially east
of I-65 where the heaviest rainfall has occurred.

For the remainder of the forecast, through next Tuesday, we will
be locked into a pattern of unusually warm temperatures, high
humidity, and only low sporadic chances for rain.

Beginning tomorrow, an upper level ridge will form, with an axis
from TX to the Great Lakes. As the ridge builds, it will limit
chances for isolated showers or storms to the southeast half of
our area. No major features are evident to initiate convection, so
whatever develops should occur in the heat of the afternoon.
Temperatures will climb 5-10 degrees above normal, reaching the
mid 80s to near 90, except lower 80s Plateau.

Beyond tomorrow, the ridge will gradually shift to become more
centered over the Great Lakes as it continues to control our wx.
The air mass across Mid TN will be unchanged, so we will continue
to have highs in the mid 80s to near 90, except lower 80s Plateau.
Lows will be in the 60s each night with patchy fog. A few pockets
of deeper moisture and weak disturbances may circulate around the
upper ridge. This could bring small pops at times, mainly over
our southern counties. Ultimately, this will not amount to much,
with 7 day average qpf values under one tenth of an inch.

Good news for Mid TN is that we will not be impacted by
Hurricanes Jose or Maria. Forecasts show these beasts staying
well to our east. Another bit of potentially good news is possible
weakening of the upper ridge and a shot of cooler air late next
week.

&&

.AVIATION...
18Z TAF DISCUSSION.

An organized band of showers and storms over Middle TN at 1730Z
was moving east and should impact KCSV between 18Z and 22Z as a
weak short wave moves east across the region. Elsewhere, expect
isolated to scattered storms through late afternoon with
convection diminishing rapidly by sunset. Should be some patchy
fog late tonight into early Wednesday morning before ending around
13Z or 14Z. Rain chances will be lower on Wednesday compared to
today as mid level ridging and slight drying develop across the
region.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      68  89  69  90  68 /  20  20  10  10  10
Clarksville    66  89  68  89  67 /  10  10   0  10  10
Crossville     62  82  63  83  63 /  30  20  10  20  10
Columbia       66  88  67  89  66 /  20  20  10  10   0
Lawrenceburg   65  87  66  88  66 /  20  20  10  20  10
Waverly        67  88  67  89  68 /  20  10   0  10   0

&&

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

&&

DISCUSSION......13
AVIATION........49

Hazardous weather outlook, Sep 19, 1:56 PM CST, 18 minutes before

Hazardous Weather Outlook
National Weather Service Nashville TN
256 PM CDT Tue Sep 19 2017

TNZ005>011-023>034-056>066-075-077>080-093>095-202000-
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-
256 PM CDT Tue Sep 19 2017

This Hazardous Weather Outlook is for portions of Middle
Tennessee.

.DAY ONE...This Afternoon and Tonight

A couple of strong to briefly severe thunderstorms are possible
late this afternoon and early evening. Gusty winds and hail may
occur, along with heavy downpours and frequent lightning.

Later tonight, areas of fog will form. Some dense fog is possible,
especially east of I-65 and across the Cumberland Plateau.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

13

In the hours before

Special weather statement, Sep 19, 8:48 AM CST, 5 hours 26 minutes before

Special Weather Statement
National Weather Service Nashville TN
948 AM CDT TUE SEP 19 2017

TNZ008-009-191530-
Sumner TN-Macon TN-
948 AM CDT TUE SEP 19 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN SUMNER AND WESTERN
MACON COUNTIES UNTIL 1030 AM CDT...

At 945 AM CDT, Doppler radar was tracking a strong thunderstorm
complex near Portland, or 13 miles north of Gallatin, moving east at
30 mph.

Winds up to 40 mph and pea-sized hail are possible with this storm.

Locations impacted include...
Westmoreland, Portland, Oak Grove and Bethpage.

LAT...LON 3663 8612 3646 8615 3646 8618 3648 8619
      3649 8622 3648 8624 3646 8624 3648 8664
      3660 8658 3665 8651 3665 8639
TIME...MOT...LOC 1445Z 271DEG 24KT 3657 8645

LV

Special weather statement, Sep 19, 11:04 AM CST, 3 hours 10 minutes before

Special Weather Statement
National Weather Service Nashville TN
1204 PM CDT TUE SEP 19 2017

TNZ028-030-191745-
Wilson TN-Smith TN-
1204 PM CDT TUE SEP 19 2017

...SIGNIFICANT WEATHER ADVISORY FOR SMITH AND SOUTHEASTERN WILSON
COUNTIES UNTIL 1245 PM CDT...

At 1203 PM CDT, Doppler radar was tracking an area of strong
thunderstorms near Gordonsville, or 8 miles south of Carthage,
moving east at 35 mph.

Winds in excess of 35 mph and small pea-sized hail are possible with
these storms.

Locations impacted include...
Lebanon, Carthage, Watertown, Gordonsville, Hickman, South Carthage,
Alexandria, Tuckers Crossroads and Gladeville.

LAT...LON 3634 8583 3629 8585 3625 8583 3624 8578
      3621 8578 3621 8581 3619 8580 3615 8582
      3610 8594 3611 8596 3608 8601 3609 8601
      3608 8603 3609 8606 3607 8606 3605 8605
      3598 8619 3611 8643 3640 8588
TIME...MOT...LOC 1703Z 264DEG 46KT 3614 8600

LV

Special weather statement, Sep 19, 1:14 PM CST, 1 hour before

Special Weather Statement
National Weather Service Nashville TN
214 PM CDT TUE SEP 19 2017

TNZ027-192000-
Davidson TN-
214 PM CDT TUE SEP 19 2017

...SIGNIFICANT WEATHER ADVISORY FOR DAVIDSON COUNTY UNTIL 300 PM
CDT...

At 211 PM CDT, National Weather Service Doppler radar was tracking a
strong thunderstorm near the north part of Nashville, moving
southeast at 15 mph.

Winds in excess of 40 mph and pea to half inch diameter hail are
possible with this storm.

Locations impacted include...
Nashville, Madison, Goodlettsville, Forest Hills, Oak Hill, Belle
Meade, Lakewood, Old Hickory, Hermitage, Berry Hill, Bells Bend and
Whites Creek.

LAT...LON 3621 8698 3635 8679 3622 8659 3612 8665
      3606 8679
TIME...MOT...LOC 1911Z 311DEG 10KT 3623 8684

LV

The radar

The Nashville radar (KOHX), 27 km away, was scanning. The volume nearest the first event began at 20:15 UTC.

Open the radar archive at this moment

Event by event

4 thunderstorm wind, 2 hail. Local standard time, as filed.

Hail, Davidson

When: September 19, 2:14 PM CST
Where: Davidson County, 0.91 mi NE of Oak Hill
Measured: 0.88 in hail
Reported by: Public
Coordinates: 36.110, -86.809

Nickel size hail reported at the Green Hills Library.

Thunderstorm Wind, Davidson

When: September 19, 2:20 PM CST
Where: Davidson County, 1.95 mi WNW of Oglesby
Measured: 52 kt (60 mph) estimated gust
Property damage: $1,000
Reported by: Public
Coordinates: 36.065, -86.759

A two foot diameter tree was blown down in the Crieve Hall area of Nashville.

Thunderstorm Wind, Davidson

When: September 19, 2:20 PM CST
Where: Davidson County, 1.95 mi WNW of Oglesby
Measured: 56 kt (64 mph) estimated gust
Property damage: $25,000
Reported by: Emergency Manager
Coordinates: 36.065, -86.759

Davidson County Emergency Management reported 70-80 trees were blown down in the Crieve Hall and Oak Hill areas of Nashville, with some trees snapped and others uprooted.

Thunderstorm Wind, Williamson

When: September 19, 2:24 PM CST
Where: Williamson County, 5.99 mi N of Mallorys
Measured: 56 kt (64 mph) estimated gust
Property damage: $15,000
Reported by: Amateur Radio
Coordinates: 36.036, -86.811

A large section of the roof at The Academy of Powell Place preschool on Powell Place in the Maryland Farms area of Brentwood collapsed due to high winds. No injuries.

Thunderstorm Wind, Williamson

When: September 19, 2:25 PM CST
Where: Williamson County, 5.99 mi N of Mallorys
Measured: 52 kt (60 mph) estimated gust
Property damage: $3,000
Reported by: Amateur Radio
Coordinates: 36.036, -86.811

Several 2-3 foot diameter trees were blown down at the intersection of Maryland Way and Continental Place in Brentwood.

Hail, Davidson

When: September 19, 2:29 PM CST
Where: Davidson County, 2.16 mi WNW of Oglesby
Measured: 0.88 in hail
Reported by: Amateur Radio
Coordinates: 36.060, -86.767

Pea to nickel size hail fell at the intersection of Rochelle Drive and Oakley Drive.

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Tennessee in 2017 Every state in 2017 This day in weather history Warnings in Tennessee, September 2017

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 721716, 721717, 721718, 721721, 721719, 721720.