Alert archive / Tennessee / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 88, NWS Nashville, TN

March 27, 20174 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 27, 2017, 5:31 PM CDT for 4 counties in Tennessee. It was in force for 29 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: Mar 27, 2017, 5:31 PM CDT (22:31 UTC)
Expired: Mar 27, 2017, 6:00 PM CDT
In force: 29 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Clay County, TN, Fentress County, TN, Overton County, TN, Pickett County, TN

The radar

The Nashville radar (KOHX), 117 km from the middle of the area, began a volume at 22:34 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
Mar 27, 5:32 PM CDT	TSTM WND DMG	3 E Celina, TN	A FEW TREES WERE BLOWN DOWN OUTSIDE OF CELINA ON HWY 53 S... HWY 52... AND CEDAR HILL RD.
Mar 27, 5:32 PM CDT	TSTM WND DMG	Celina, TN	GUTTERS BLOWN OFF A FACTORY IN CELINA.

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 1 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
Mar 27, 2:24 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.5 hours before the alert went out and 124 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: 48 J/kg
Mixed-layer CIN: -156 J/kg
Mixed-layer LCL: 1296 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

287 
WUUS54 KOHX 272231
SVROHX
TNC027-049-133-137-272300-
/O.NEW.KOHX.SV.W.0088.170327T2231Z-170327T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
531 PM CDT MON MAR 27 2017

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Northern Overton County in Middle Tennessee...
  Pickett County in Middle Tennessee...
  Clay County in Middle Tennessee...
  Northwestern Fentress County in Middle Tennessee...

* Until 600 PM CDT

* At 531 PM CDT, a severe thunderstorm was located over Celina,
  moving northeast at 55 mph.

  HAZARD...60 mph wind gusts and nickel size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Jamestown, Celina, Byrdstown, Wolf River Dock, Moss, Dale Hollow
  Lake, Pall Mall and Standing Stone State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3661 8492 3643 8486 3642 8552 3647 8556
      3647 8558 3662 8564 3661 8550 3663 8527
TIME...MOT...LOC 2231Z 234DEG 49KT 3653 8546 

HAIL...0.88IN
WIND...60MPH
 
$$

Barnwell

1 follow-up statement

207 
WWUS54 KOHX 272251
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
551 PM CDT MON MAR 27 2017

TNC027-049-133-137-272301-
/O.EXP.KOHX.SV.W.0088.000000T0000Z-170327T2300Z/
Overton TN-Pickett TN-Clay TN-Fentress TN-
551 PM CDT MON MAR 27 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN OVERTON...PICKETT...
CLAY AND NORTHWESTERN FENTRESS COUNTIES WILL EXPIRE AT 600 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A severe thunderstorm watch remains in effect until 1000 PM CDT for
Middle Tennessee.

LAT...LON 3661 8492 3643 8486 3642 8552 3647 8556
      3647 8558 3662 8564 3661 8550 3663 8527
TIME...MOT...LOC 2251Z 234DEG 49KT 3667 8522 

$$

Barnwell

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 Mar 27, 3:01 PM CDT, 2 hours 30 minutes earlier.

Area forecast discussion, Mar 27, 3:01 PM CDT, 2 hours 30 minutes before

Area Forecast Discussion
National Weather Service Nashville TN
301 PM CDT Mon Mar 27 2017

.DISCUSSION...

Numerous thunderstorms have moved into our western counties,
including a few likely severe storms with radar indicating large
hail. Afternoon analysis indicates dew points around 60, capes
near 1500 J/kg, and low level SRH just over 200. That is enough to
get some rotation within the individual storms, which supports
large hail and localized damaging winds. Although the potential
for tornadoes is relatively low, we will need to monitor these
rotating storms closely for localized spin up potential. These
thunderstorms will continue to move eastward across the Mid STate
through the next few hours. HRRR model indicates additional
thunderstorms, currently forming farther west along the Ms River,
will consolidate into a line and sweep through this evening with
possible strong winds. Timing of this line is estimated to be at
CKV around 6 PM, BNA by 8 PM, and 10 PM for the Plateau.

Many areas will have more than 1 inch of rainfall through tonight,
with some locally heavier amounts possible. A few localized flash
flood warnings are possible.

A few showers will linger into Tuesday morning. Otherwise, upper
ridging will build in Tuesday and Wednesday. Temperatures will be
warm. Lingering cloudiness on Tuesday will only allow low to mid
70s, but more sun and rising heights Wednesday will allow highs
near 80.

A strengthening low pressure system over the Plains will bring our
next chance of thunderstorms by Thursday. This looks like another
potentially severe thunderstorm day as low level moisture and
southerly flow increases ahead of an approaches cold front.
Thunderstorms chances will stay in the forecast from Thursday
through Friday.

Saturday and Sunday look pretty good at this time. The next system
with more showers and storms is set to roll in next Monday or
Tuesday.

&&

.AVIATION...
18Z TAF DISCUSSION.

Numerous showers/storms will affect airports this TAF period
especially later this afternoon/evening. MVFR cigs/vis anticipated
with lower categories and amendments possible. Gusty south to
southwest winds this afternoon will weaken and veer to
west/northwest late in the TAF period.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      58  72  52  78  58 / 100  10  10   0  20
Clarksville    55  69  52  74  57 /  90  10  10  10  20
Crossville     57  69  50  74  55 /  90  20  10   0  10
Columbia       59  72  52  78  58 / 100  10  10  20  10
Lawrenceburg   59  73  52  79  58 / 100  10  10  20  10
Waverly        56  70  52  76  59 /  90  10  10  10  20

&&

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

&&

DISCUSSION......13
AVIATION........Shamburger

Hazardous weather outlook, Mar 27, 5:21 AM CDT, 12 hours 10 minutes before

Hazardous Weather Outlook
National Weather Service Nashville TN
521 AM CDT Mon Mar 27 2017

TNZ005>011-023>034-056>066-075-077>080-093>095-281030-
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-
521 AM CDT Mon Mar 27 2017

This Hazardous Weather Outlook is for portions of Middle
Tennessee.

.DAY ONE...Today and Tonight

Strong to severe thunderstorms are possible this afternoon and
evening across all of Middle Tennessee. The greatest chance for
severe storms however remains along and west of I-65. Damaging
straight line winds and hail are the main threats. An isolated
brief tornado is possible as well.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Another round of strong to severe storms is possible in Middle
Tennessee on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be necessary this afternoon and again on
Thursday.

In the hours before

Local storm report, Mar 27, 5:01 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
501 PM CDT MON MAR 27 2017

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

0345 PM     TSTM WND GST     NASHVILLE               36.17N  86.78W
03/27/2017  M61 MPH          DAVIDSON           TN   BROADCAST MEDIA

            OCCURRED AT WSMV-TV WEST OF DOWNTOWN NASHVILLE

&&

EVENT NUMBER OHX1700341

ROSE

Local storm report, Mar 27, 5:02 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
502 PM CDT MON MAR 27 2017

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

0348 PM     TSTM WND DMG     2 SW NASHVILLE          36.15N  86.81W
03/27/2017                   DAVIDSON           TN   TWITTER

            TSPOTTER REPORTS SHOWED MULTIPLE TREES DOWN ON WEST END
            NEAR THE VANDERBILT CAMPUS.

&&

EVENT NUMBER OHX1700342

MR3

Special weather statement, Mar 27, 5:02 PM CDT, 29 minutes before

Special Weather Statement
National Weather Service Nashville TN
502 PM CDT MON MAR 27 2017

TNZ010-011-031-033-034-272245-
Fentress TN-Overton TN-Pickett TN-Clay TN-Jackson TN-
502 PM CDT MON MAR 27 2017

...SIGNIFICANT WEATHER ADVISORY FOR OVERTON...PICKETT...EASTERN
JACKSON...CLAY AND NORTHWESTERN FENTRESS COUNTIES UNTIL 545 PM CDT...

At 502 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles west of Livingston, moving northeast at 40 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Livingston, Celina, Gainesboro, Byrdstown, Whitleyville, Moss,
Crawford, Rickman, Dale Hollow Lake, Boles and Standing Stone State
Park.

A severe thunderstorm watch remains in effect until 1000 PM CDT for
Middle Tennessee.

LAT...LON 3662 8501 3622 8512 3625 8544 3626 8543
      3626 8545 3628 8547 3628 8545 3630 8547
      3630 8550 3629 8549 3626 8551 3627 8570
      3662 8569
TIME...MOT...LOC 2202Z 208DEG 34KT 3635 8545

Barnwell

Special weather statement, Mar 27, 5:11 PM CDT, 20 minutes before

Special Weather Statement
National Weather Service Nashville TN
511 PM CDT MON MAR 27 2017

TNZ010-031-272300-
Clay TN-Jackson TN-
511 PM CDT MON MAR 27 2017

...SIGNIFICANT WEATHER ADVISORY FOR JACKSON AND CLAY COUNTIES UNTIL
600 PM CDT...

At 511 PM CDT, Doppler radar was tracking a strong thunderstorm near
Gainesboro, moving northeast at 45 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Celina, Gainesboro, Dale Hollow Lake, Whitleyville and Moss.

A severe thunderstorm watch remains in effect until 1000 PM CDT for
Middle Tennessee.

LAT...LON 3624 8570 3632 8584 3662 8579 3661 8550
      3662 8531
TIME...MOT...LOC 2211Z 213DEG 38KT 3636 8575

Barnwell

Local storm report, Mar 27, 5:25 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
525 PM CDT MON MAR 27 2017

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

0352 PM     TSTM WND DMG     2 NE NASHVILLE          36.19N  86.76W
03/27/2017                   DAVIDSON           TN   TWITTER

            A TSPOTTER REPORT SHOWED A LARGE TREE THAT CLIPPED A
            HOUSE WHEN IT FELL ON PENNOCK AVE.

&&

EVENT NUMBER OHX1700343

MR3

Local storm report, Mar 27, 5:26 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
526 PM CDT MON MAR 27 2017

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

0334 PM     TSTM WND DMG     12 SW NASHVILLE         36.05N  86.94W
03/27/2017                   DAVIDSON           TN   FACEBOOK

            TREES DOWN AT TEMPLE RD. AND HIGHWAY 100 IN BELLEVUE

&&

EVENT NUMBER OHX1700344

ROSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 1:43 PM CDT	Special Weather Statement	OHX	Stewart	47 min
Mar 27, 1:56 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	49 min
Mar 27, 2:16 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	29 min
Mar 27, 2:39 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Humphreys, Montgomery, Stewart	36 min
Mar 27, 3:13 PM CDT	Special Weather Statement	OHX	Cheatham, Davidson, Robertson, Williamson	62 min
Mar 27, 3:17 PM CDT	Special Weather Statement	OHX	Dickson, Houston, Montgomery	28 min
Mar 27, 3:21 PM CDT	Special Weather Statement	OHX	Giles, Lawrence, Marshall, Maury	54 min
Mar 27, 3:36 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Williamson	24 min
Mar 27, 3:39 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Marshall	36 min
Mar 27, 3:52 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Robertson, Sumner, Wilson	23 min
Mar 27, 3:55 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Marshall, Rutherford, Williamson	35 min
Mar 27, 4:14 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale, Wilson	31 min
Mar 27, 4:19 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Sumner, Williamson, Wilson	26 min
Mar 27, 4:29 PM CDT	Special Weather Statement	OHX	Overton, Putnam	46 min
Mar 27, 4:38 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale	37 min
Mar 27, 4:42 PM CDT	Special Weather Statement	OHX	Grundy, Van Buren, Warren	48 min
Mar 27, 4:45 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Humphreys	30 min
Mar 27, 5:02 PM CDT	Special Weather Statement	OHX	Clay, Jackson, Overton, Pickett	43 min
Mar 27, 5:11 PM CDT	Special Weather Statement	OHX	Clay, Jackson	49 min
Mar 27, 5:15 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Humphreys	30 min
Mar 27, 5:25 PM CDT	Severe Thunderstorm Warning	OHX	Perry	50 min
Mar 27, 5:39 PM CDT	Tornado Warning	OHX	Perry, Wayne	25 min
Mar 27, 5:45 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Maury, Williamson	45 min
Mar 27, 6:01 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys, Montgomery	16 min
Mar 27, 6:02 PM CDT	Tornado Warning	OHX	Hickman, Lewis, Perry	28 min
Mar 27, 6:12 PM CDT	Areal Flood Advisory	OHX	Perry	2 hr
Mar 27, 6:28 PM CDT	Tornado Warning	OHX	Hickman, Lewis, Maury	32 min
Mar 27, 6:43 PM CDT	Tornado Warning	OHX	Wayne	32 min
Mar 27, 6:55 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Marshall, Maury, Williamson	50 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2017 Every severe thunderstorm warning in 2017

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.