Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 33, NWS Nashville, TN

April 4, 20114 counties in Tennessee

NWS Nashville, TN issued this tornado warning at Apr 4, 2011, 1:53 PM CDT for 4 counties in Tennessee. It was in force for 37 min. 6 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: Apr 4, 2011, 1:53 PM CDT (18:53 UTC)
Expired: Apr 4, 2011, 2:30 PM CDT
In force: 37 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Cheatham County, TN, Davidson County, TN, Robertson County, TN, Sumner County, TN

The radar

The Nashville radar (KOHX), 15 km from the middle of the area, began a volume at 18:56 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
Apr 4, 1:55 PM CDT	TSTM WND DMG	10 Nw Nashville, TN	WIDESPREAD LARGE DIAMETER TREES DOWNED THROUGH THE JOELTON AREA WITH SEVERAL HOMES RECEIVING DAMAGE. LARGE DIAMTER TREE TOTALLY BLOCKING RIDGEWOOD ROAD IN JOELTON WITH POWER LINES AFFECTED. NUMEROUS POWER OUTAGES IN JOELTON.
Apr 4, 2:00 PM CDT	TSTM WND DMG	4 W White House, TN	TREES WERE BLOWN DOWN NEAR WHITE HOUSE.
Apr 4, 2:15 PM CDT	TSTM WND DMG	1 N Hendersonville, TN	TREES DOWN NEAR HWY 386 AND NEW SHACKLE ISLAND ROAD
Apr 4, 2:17 PM CDT	TSTM WND DMG	2 Nw Gallatin, TN	TREE 2.5 FEET IN DIAMETER DOWN
Apr 4, 2:20 PM CDT	TSTM WND DMG	1 W Gallatin, TN	SEVERAL TREES DOWN AT LONG HOLLOW GOLF COURSE
Apr 4, 2:35 PM CDT	TSTM WND DMG	1 Sw Gallatin, TN	TREES DOWN, TRAFFIC LIGHT BLOWN DOWN ON 109 AT BELVEDERE

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 4, 11:34 AM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.9 hours before the alert went out and 29 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: 68 J/kg
Mixed-layer CIN: -640 J/kg
Mixed-layer LCL: 855 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 370 m²/s²
0-3 km storm-relative helicity: 507 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

293 
WFUS54 KOHX 041853
TOROHX
TNC021-037-147-165-041930-
/O.NEW.KOHX.TO.W.0033.110404T1853Z-110404T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
153 PM CDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL CHEATHAM COUNTY IN MIDDLE TENNESSEE...
  NORTHERN DAVIDSON COUNTY IN MIDDLE TENNESSEE...
  SOUTHERN ROBERTSON COUNTY IN MIDDLE TENNESSEE...
  SUMNER COUNTY IN MIDDLE TENNESSEE...

* UNTIL 230 PM CDT

* AT 147 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR ASHLAND CITY...AND MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GALLATIN...GREENBRIER...RIDGETOP...GOODLETTSVILLE...MILLERSVILLE...
  LAKEWOOD...HENDERSONVILLE...WHITE HOUSE...PORTLAND...WESTMORELAND
  AND MITCHELLVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3664 8620 3651 8621 3646 8626 3637 8626
      3631 8630 3631 8635 3634 8634 3635 8637
      3631 8639 3633 8644 3628 8650 3632 8654
      3623 8658 3616 8711 3627 8716 3630 8713
      3633 8718 3653 8663 3665 8655
TIME...MOT...LOC 1853Z 252DEG 52KT 3628 8703

$$

BOYD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 9:54 AM CDT	Severe Thunderstorm Warning	OHX	Benton, Hickman, Humphreys, Perry	24 min
Apr 4, 11:24 AM CDT	Severe Thunderstorm Warning	OHX	Benton, Houston, Humphreys, Montgomery, Stewart	36 min
Apr 4, 11:50 AM CDT	Tornado Warning	OHX	Montgomery, Stewart	25 min
Apr 4, 11:54 AM CDT	Severe Thunderstorm Warning	OHX	Benton, Cheatham, Dickson, Houston, Humphreys, Montgomery and 2 more	51 min
Apr 4, 12:41 PM CDT	Tornado Warning	OHX	Montgomery, Robertson	34 min
Apr 4, 1:00 PM CDT	Severe Thunderstorm Warning	OHX	Benton	30 min
Apr 4, 1:07 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys, Montgomery, Stewart	38 min
Apr 4, 1:13 PM CDT	Tornado Warning	OHX	Benton, Humphreys	23 min
Apr 4, 1:17 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Lawrence, Lewis, Maury, Williamson	28 min
Apr 4, 1:22 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Humphreys, Lawrence, Lewis, Maury, Perry and 1 more	23 min
Apr 4, 1:28 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Humphreys, Montgomery, Robertson	62 min
Apr 4, 1:35 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lawrence, Lewis, Maury, Perry, Wayne	40 min
Apr 4, 1:40 PM CDT	Tornado Warning	OHX	Cheatham, Dickson, Humphreys, Montgomery	35 min
Apr 4, 1:45 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Hickman, Rutherford, Sumner and 2 more	45 min
Apr 4, 1:47 PM CDT	Tornado Warning	OHX	Cheatham, Davidson, Dickson, Robertson	28 min
Apr 4, 1:55 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Macon, Robertson, Smith and 2 more	35 min
Apr 4, 1:56 PM CDT	Tornado Warning	OHX	Cheatham, Davidson, Dickson, Rutherford, Williamson, Wilson	34 min
Apr 4, 2:08 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Davidson, Marshall, Maury, Rutherford, Sumner and 2 more	52 min
Apr 4, 2:10 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Davidson, Jackson, Macon, Overton, Pickett and 4 more	65 min
Apr 4, 2:19 PM CDT	Tornado Warning	OHX	Davidson, Sumner, Trousdale, Wilson	26 min
Apr 4, 2:26 PM CDT	Tornado Warning	OHX	Cannon, Rutherford, Smith, Wilson	34 min
Apr 4, 2:27 PM CDT	Tornado Warning	OHX	Cannon, Rutherford, Williamson, Wilson	33 min
Apr 4, 2:32 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Fentress, Jackson, Macon, Overton, Pickett and 4 more	43 min
Apr 4, 2:32 PM CDT	Tornado Warning	OHX	Giles, Lawrence	28 min
Apr 4, 2:44 PM CDT	Tornado Warning	OHX	Jackson, Overton, Putnam, Smith	46 min
Apr 4, 2:54 PM CDT	River Flood Warning	OHX	Bedford	21 hr
Apr 4, 2:54 PM CDT	River Flood Warning	OHX	Davidson	67 min
Apr 4, 2:54 PM CDT	River Flood Warning	OHX	Bedford	6 hr
Apr 4, 3:00 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, DeKalb, Putnam, Rutherford and 4 more	30 min
Apr 4, 3:18 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Overton, Pickett	57 min
Apr 4, 3:24 PM CDT	Tornado Warning	OHX	Cumberland, Fentress, Overton, Putnam	36 min
Apr 4, 3:27 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Fentress, Overton, Putnam, Van Buren, Warren and 1 more	48 min
Apr 4, 3:37 PM CDT	Tornado Warning	OHX	Fentress	38 min
Apr 4, 3:50 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Warren	25 min
Apr 4, 6:25 PM CDT	River Flood Advisory	OHX	Hickman	36 hr
Apr 4, 6:25 PM CDT	River Flood Advisory	OHX	Perry	36 hr

Nearby

Tornado Warnings in Tennessee, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.