Alert archive / Tennessee / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 169, NWS Nashville, TN

July 8, 20168 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 8, 2016, 9:56 PM CDT for 8 counties in Tennessee. It was in force for 64 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 8, 2016, 9:56 PM CDT (02:56 UTC)
Expired: Jul 8, 2016, 11:00 PM CDT
In force: 64 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cannon County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Grundy County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Northeast Alabama radar (KHTX), 87 km from the middle of the area, began a volume at 02:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jul 8, 9:58 PM CDT	TSTM WND DMG	8 Wsw Centertown, TN	TREE FELL ON A HOUSE AT 55 MCMAHAN ROAD CAUSING DAMAGE. TIME ESTIMATED BY RADAR.
Jul 8, 10:15 PM CDT	TSTM WND DMG	Morrison, TN	ONE 50 FOOT TALL 2 FOOT DIAMTER TREE UPROOTED NEAR THE MORRISON LIBRARY ON MAPLE STREET. OTHER TREES DOWN NEARBY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 2 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 8, 8:22 PM CDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.9 hours before the alert went out and 118 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2167 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1438 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

306 
WUUS54 KOHX 090256
SVROHX
TNC015-031-035-041-061-175-177-185-090400-
/O.NEW.KOHX.SV.W.0169.160709T0256Z-160709T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
956 PM CDT FRI JUL 8 2016

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WHITE COUNTY IN MIDDLE TENNESSEE...
  SOUTHERN DE KALB COUNTY IN MIDDLE TENNESSEE...
  CANNON COUNTY IN MIDDLE TENNESSEE...
  VAN BUREN COUNTY IN MIDDLE TENNESSEE...
  SOUTHWESTERN CUMBERLAND COUNTY IN MIDDLE TENNESSEE...
  WARREN COUNTY IN MIDDLE TENNESSEE...
  GRUNDY COUNTY IN MIDDLE TENNESSEE...
  NORTHERN COFFEE COUNTY IN MIDDLE TENNESSEE...

* UNTIL 1100 PM CDT

* AT 956 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR SMITHVILLE TO 11 MILES SOUTH OF WOODBURY...
  MOVING EAST AT 50 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  MCMINNVILLE...WOODBURY...SPENCER...GRUETLI-LAAGER...ALTAMONT...
  COALMONT...MORRISON...PALMER...DOYLE...BEERSHEBA SPRINGS...
  CENTERTOWN...VIOLA...FALL CREEK FALLS STATE PARK...SUMMITVILLE...
  ROCK ISLAND STATE PARK...BRADYVILLE...
  INDIAN ROCK LAKE AND FALL CREEK FALLS S.P..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. THESE STORMS ARE PRODUCING WIDESPREAD
WIND DAMAGE. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS! 
&&

LAT...LON 3531 8566 3565 8623 3596 8601 3578 8506
      3576 8508 3577 8510 3576 8526 3572 8527
      3557 8542 3555 8546 3553 8561 3549 8554
      3543 8554 3540 8549 3536 8551 3532 8556
      3530 8563
TIME...MOT...LOC 0256Z 276DEG 45KT 3592 8589 3567 8614 

HAIL...0.75IN
WIND...60MPH
 
$$

SHAMBURGER

1 follow-up statement

416 
WWUS54 KOHX 090335
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1035 PM CDT FRI JUL 8 2016

TNC015-031-035-041-061-175-177-185-090400-
/O.CON.KOHX.SV.W.0169.000000T0000Z-160709T0400Z/
WHITE TN-DE KALB TN-CANNON TN-VAN BUREN TN-CUMBERLAND TN-WARREN TN-
GRUNDY TN-COFFEE TN-
1035 PM CDT FRI JUL 8 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR SOUTHERN WHITE...SOUTHEASTERN DE KALB...SOUTHEASTERN CANNON...VAN
BUREN...SOUTHWESTERN CUMBERLAND...WARREN...GRUNDY AND NORTHEASTERN
COFFEE COUNTIES...

AT 1034 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR SPENCER TO NEAR ALTAMONT...MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
MCMINNVILLE...SPENCER...GRUETLI-LAAGER...ALTAMONT...COALMONT...
MORRISON...PALMER...DOYLE...BEERSHEBA SPRINGS...CENTERTOWN...VIOLA...
FALL CREEK FALLS STATE PARK...SUMMITVILLE...ROCK ISLAND STATE PARK...
INDIAN ROCK LAKE AND FALL CREEK FALLS S.P..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION. THESE STORMS ARE PRODUCING WIDESPREAD
WIND DAMAGE. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.
 
&&

LAT...LON 3531 8566 3564 8620 3592 8578 3578 8506
      3576 8508 3577 8510 3576 8526 3572 8527
      3557 8542 3555 8546 3553 8561 3549 8554
      3543 8554 3540 8549 3536 8551 3532 8556
      3530 8563
TIME...MOT...LOC 0334Z 282DEG 35KT 3582 8540 3547 8584 

HAIL...0.75IN
WIND...60MPH
 
$$

SHAMBURGER

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jul 8, 7:31 PM CDT, 2 hours 25 minutes earlier.

Area forecast discussion, Jul 8, 7:31 PM CDT, 2 hours 25 minutes before

Area Forecast Discussion
National Weather Service Nashville TN
731 PM CDT FRI JUL 8 2016

.UPDATE...
FOR EVENING DISCUSSION.

&&

.DISCUSSION...

This afd is being reissued so as to reflect the temporal extension
in regard to the flood watch. It is now in effect until 2 am cdt.

&&

.AVIATION...
00Z TAF DISCUSSION.

Moist and unstable airmass in place through the 1st half of the
taf pd. A series of upper level impulses will interact with the
instability and produce strong to potentially severe tstms through
around 10z. stronger wind gusts will be possible with the tstms.
Otw, aft 09z we will see our lower level wind flow become more
northwesterly as a sfc high builds southward from the upper
midwest. This will act to bring lower dewpoints and less
convective energy to the area. Despite the continuation of a few
upper level impulses, most of the convective activity should be
south of the taf sites during the latter portions of the taf pd.

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch until 2 AM CDT Saturday FOR Cannon-Cheatham-
Clay-Cumberland-Davidson-De Kalb-Dickson-Fentress-Houston-
Humphreys-Jackson-Macon-Montgomery-Overton-Pickett-Putnam-
Robertson-Rutherford-Smith-Stewart-Sumner-Trousdale-Van Buren-
Warren-White-Williamson-Wilson.

&&

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

Hazardous weather outlook, Jul 8, 1:52 PM CDT, 8 hours 4 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NASHVILLE TN
152 PM CDT FRI JUL 8 2016

TNZ007>011-028>034-064>066-091000-
ROBERTSON-SUMNER-MACON-CLAY-PICKETT-WILSON-TROUSDALE-SMITH-
JACKSON-PUTNAM-OVERTON-FENTRESS-DE KALB-WHITE-CUMBERLAND-
152 PM CDT FRI JUL 8 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE
TENNESSEE.

.DAY ONE...THIS AFTERNOON AND TONIGHT

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON INTO
THIS EVENING...FOR LOCATIONS GENERALLY ALONG AND EAST OF THE
I-65 CORRIDOR. THE MAIN THREATS WILL BE DAMAGING STRAIGHT LINE
WINDS. HEAVY RAINFALL COULD ALSO OCCUR WITH SOME OF THE STRONGER
SHOWERS AND THUNDERSTORMS...PRODUCING ONE...UP TO LOCALLY THREE
INCHES...OF RAINFALL THROUGH THE EVENING HOURS. THIS HAS THE
POTENTIAL OF LEADING TO FLASH FLOODING...ESPECIALLY ACROSS
NORTHERN AND EASTERN PORTIONS OF THE MID STATE THROUGH THE
EVENING HOURS.

HEAT INDICES ARE EXPECTED TO CLIMB INTO THE LOW 100'S THIS
AFTERNOON FOR MANY LOCATIONS WEST OF THE CUMBERLAND PLATEAU.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A WARM AND HUMID PATTERN WILL CONTINUE WITH A CHANCE FOR ISOLATED
TO SCATTERED THUNDERSTORMS EACH DAY...SATURDAY THROUGH THURSDAY.
ALTHOUGH WIDESPREAD HAZARDOUS WEATHER IS NOT EXPECTED...A FEW
THUNDERSTORMS COULD BE STRONG TO SEVERE...MAINLY DURING THE
AFTERNOON AND EVENING HOURS. GUSTY WINDS AND HEAVY DOWNPOURS WILL
THE MAIN CONCERNS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THROUGH THIS EVENING.

TNZ005-006-023>027-056>063-075-077>080-093>095-091000-
STEWART-MONTGOMERY-HOUSTON-HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-
PERRY-HICKMAN-LEWIS-WILLIAMSON-MAURY-MARSHALL-RUTHERFORD-CANNON-
BEDFORD-COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-GILES-
152 PM CDT FRI JUL 8 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF MIDDLE
TENNESSEE.

.DAY ONE...THIS AFTERNOON AND TONIGHT

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON INTO
THIS EVENING FOR LOCATIONS GENERALLY ALONG AND EAST OF THE I-65
CORRIDOR. MAIN THREAT WILL BE DAMAGING STRAIGHT LINE WINDS. SOME
LOCALIZED HEAVY RAINFALL COULD LEAD TO LOCALIZED FLASH FLOODING.

HEAT INDICES ARE EXPECTED TO CLIMB INTO THE LOW 100'S THIS
AFTERNOON FOR MANY LOCATIONS WEST OF THE CUMBERLAND PLATEAU.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A WARM AND HUMID PATTERN WILL CONTINUE WITH A CHANCE FOR ISOLATED
TO SCATTERED THUNDERSTORMS EACH DAY...SATURDAY THROUGH THURSDAY.
ALTHOUGH WIDESPREAD HAZARDOUS WEATHER IS NOT EXPECTED...A FEW
THUNDERSTORMS COULD BE STRONG TO SEVERE...MAINLY DURING THE
AFTERNOON AND EVENING HOURS. GUSTY WINDS AND HEAVY DOWNPOURS WILL
THE MAIN CONCERNS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AND EVENING.

SPOTTER THUNDERSTORM REPORTING CRITERIA...
TORNADO
FUNNEL CLOUD
FLOODING
HAIL >=1/2 INCH
WINDS > 50 MPH (MEASURED)
STRUCTURAL DAMAGE
TREES OR POWER LINES DOWN

31

In the hours before

Local storm report, Jul 8, 9:43 PM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
943 PM CDT FRI JUL 08 2016

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

0914 PM     TSTM WND DMG     FRANKLIN                35.93N  86.84W
07/08/2016                   WILLIAMSON         TN   LAW ENFORCEMENT

            TREES DOWN ON SEVERAL ROAD AROUND FRANKLIN CLIFFE
            RUN... PEYTONSVILLE/PRATT... FRANKLIN RD/LANCASTER

&&

EVENT NUMBER OHX1600883

11

Local storm report, Jul 8, 9:44 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
944 PM CDT FRI JUL 08 2016

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

0927 PM     TSTM WND DMG     SPRING HILL             35.74N  86.92W
07/08/2016                   MAURY              TN   TWITTER

            TREES DOWN ON PIPKIN HILLS DRIVE.

&&

EVENT NUMBER OHX1600884

LAROSA

Local storm report, Jul 8, 9:45 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
945 PM CDT FRI JUL 08 2016

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

0916 PM     TSTM WND DMG     2 SW SMYRNA             35.96N  86.54W
07/08/2016                   RUTHERFORD         TN   TWITTER

            LARGE TREE DOWN ON MONTGOMERY WAY IN SMYRNA

&&

EVENT NUMBER OHX1600886

11

Local storm report, Jul 8, 9:47 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
947 PM CDT FRI JUL 08 2016

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

0915 PM     TSTM WND DMG     BRENTWOOD               36.00N  86.79W
07/08/2016                   WILLIAMSON         TN   AMATEUR RADIO

            PWOER OUT AT FRANKLIN ROAD AND CONCORD ROAD.

&&

EVENT NUMBER OHX1600887

LAROSA

Local storm report, Jul 8, 9:51 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
951 PM CDT FRI JUL 08 2016

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

0905 PM     TSTM WND DMG     1 E BELLEVUE            36.08N  86.91W
07/08/2016                   DAVIDSON           TN   BROADCAST MEDIA

            POWER LINES DOWN AT IROQUOIS APARTMENTS IN BELLEVUE

&&

EVENT NUMBER OHX1600888

11

Local storm report, Jul 8, 9:55 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
955 PM CDT FRI JUL 08 2016

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

0926 PM     TSTM WND DMG     6 WSW CARTHAGE          36.22N  86.04W
07/08/2016                   SMITH              TN   TWITTER

            TREES DOWN IN ROME

&&

EVENT NUMBER OHX1600889

11

The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 8, 7:16 PM CDT	Areal Flood Advisory	OHX	Montgomery, Stewart	3 hr
Jul 8, 7:16 PM CDT	Special Weather Statement	OHX	Humphreys	44 min
Jul 8, 7:25 PM CDT	Special Weather Statement	OHX	Giles	50 min
Jul 8, 7:34 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys, Montgomery, Stewart	41 min
Jul 8, 7:44 PM CDT	Special Weather Statement	OHX	Warren	46 min
Jul 8, 7:47 PM CDT	Special Weather Statement	OHX	Hickman	43 min
Jul 8, 7:55 PM CDT	Special Weather Statement	OHX	Wayne	50 min
Jul 8, 8:00 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Humphreys, Montgomery, Robertson	30 min
Jul 8, 8:17 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Williamson	28 min
Jul 8, 8:25 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Robertson, Sumner, Williamson	35 min
Jul 8, 8:41 PM CDT	Special Weather Statement	OHX	Giles	49 min
Jul 8, 8:41 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Maury, Williamson	29 min
Jul 8, 8:50 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Macon, Rutherford, Smith, Sumner, Trousdale and 2 more	40 min
Jul 8, 8:54 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Giles, Marshall, Maury	51 min
Jul 8, 8:58 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Williamson	32 min
Jul 8, 9:08 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	37 min
Jul 8, 9:22 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Smith, Trousdale	38 min
Jul 8, 9:25 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Jackson, Putnam, Rutherford, Smith and 2 more	35 min
Jul 8, 9:31 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Marshall, Rutherford, Williamson	29 min
Jul 8, 9:36 PM CDT	Special Weather Statement	OHX	Grundy	39 min
Jul 8, 9:38 PM CDT	Special Weather Statement	OHX	Lewis	52 min
Jul 8, 9:42 PM CDT	Special Weather Statement	OHX	Giles	33 min
Jul 8, 9:50 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Fentress, Jackson, Overton, Pickett, Putnam	70 min
Jul 8, 9:52 PM CDT	Areal Flood Advisory	OHX	Giles, Marshall	3 hr
Jul 8, 9:53 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, DeKalb, Fentress, Jackson, Overton, Putnam and 2 more	67 min
Jul 8, 10:00 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Coffee, Grundy, Marshall, Rutherford	60 min
Jul 8, 10:55 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Fentress	35 min
Jul 8, 10:58 PM CDT	Severe Thunderstorm Warning	OHX	Grundy, Van Buren, Warren	32 min
Jul 9, 7:27 AM CDT	River Flood Advisory	OHX	Montgomery, Robertson	4 hr
Jul 9, 4:59 PM CDT	Special Weather Statement	OHX	Perry	46 min
Jul 9, 6:02 PM CDT	Areal Flood Advisory	OHX	Maury	118 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2016 Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.