Alert archive / Tennessee / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 2, NWS Nashville, TN

February 24, 20118 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Feb 24, 2011, 8:58 PM CST for 8 counties in Tennessee. It was in force for 63 min. 8 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: Feb 24, 2011, 8:58 PM CST (02:58 UTC)
Expired: Feb 24, 2011, 10:01 PM CST
In force: 63 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Cheatham County, TN, Davidson County, TN, Dickson County, TN, Houston County, TN, Humphreys County, TN, Montgomery County, TN, Robertson County, TN, Stewart County, TN

What was reported inside it

Time	Report	Where	Remark
Feb 24, 9:05 PM CST	TORNADO	6 Wsw Clarksville, TN	EF1 TORNADO WITH WINDS 90 TO 100 MPH TOUCHED DOWN ALONG YORK ROAD JUST SOUTH OF THE WOODLAWN COMMUNITY. INTERMITTENT DAMAGE CONTINUED 2.3 MILES TO THE NORTHEAST. DOZENS OF TREES WERE UPROOTED AND SNAPPED...AND A HOUSE ON DOTSONVILLE ROAD LOST PART OF ITS ROOF.
Feb 24, 9:10 PM CST	TSTM WND DMG	Dickson, TN	TREES ACROSS WEST CRAB CREEK ROAD. HWY100/SPOTLIGHT ROAD...TRANSFORMER BLOWN OFF POOL. POWER OUTAGES.
Feb 24, 9:15 PM CST	TSTM WND DMG	2 Wnw Clarksville, TN	ROOF BLOWN OFF NEAR WOODLAWN
Feb 24, 9:15 PM CST	TSTM WND DMG	7 E Clarksville, TN	SEVERAL LARGE TREES DOWN NEAR EXIT 8 OFF OF I-24
Feb 24, 9:15 PM CST	TSTM WND DMG	Dickson, TN	HARMON SPRINGS - TREE IN HOUSE
Feb 24, 9:17 PM CST	TSTM WND GST 65	7 E Clarksville, TN
Feb 24, 9:41 PM CST	TSTM WND DMG	Dickson, TN	TREES DOWN CRAB CREEK ROAD. HWY100...TRANSFORMER BLOWN OFF POLL. POWER OUTAGES.
Feb 24, 9:50 PM CST	TSTM WND DMG	Dickson, TN	HWY100/YELLOW CREEK ROAD...NUMEROUS LARGE TREES DOWN.

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
Feb 24, 2:34 PM CST	Tornado Watch	SPC	7 hr
Feb 24, 7:41 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 3.0 hours before the alert went out and 70 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: 17 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 793 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 538 m²/s²
0-3 km storm-relative helicity: 629 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

333 
WUUS54 KOHX 250258
SVROHX
TNC021-037-043-083-085-125-147-161-250430-
/O.NEW.KOHX.SV.W.0002.110225T0258Z-110225T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
858 PM CST THU FEB 24 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DICKSON COUNTY IN MIDDLE TENNESSEE...
  EASTERN HOUSTON COUNTY IN MIDDLE TENNESSEE...
  WESTERN DAVIDSON COUNTY IN MIDDLE TENNESSEE...
  CHEATHAM COUNTY IN MIDDLE TENNESSEE...
  MONTGOMERY COUNTY IN MIDDLE TENNESSEE...
  WESTERN ROBERTSON COUNTY IN MIDDLE TENNESSEE...
  EASTERN STEWART COUNTY IN MIDDLE TENNESSEE...
  EASTERN HUMPHREYS COUNTY IN MIDDLE TENNESSEE...

* UNTIL 1030 PM CST

* AT 852 PM CST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING ONE INCH DIAMETER
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE SEVERE   
STORMS EXTENDED FROM INDIAN MOUND IN STEWART COUNTY SOUTH ACROSS 
ERIN...WAVERLY...MOVING EAST AT 50 MPH. THE LINE OF SEVERE STORM 
WILL REACH INTERSTATE 65 BY 10 PM CST.

* LOCATIONS IMPACTED INCLUDE...
  MCEWEN...
  DICKSON...
  CLARKSVILLE...
  BURNS...
  KINGSTON SPRINGS...
  PEGRAM...
  SPRINGFIELD...
  SPRINGFIELD...
  GREENBRIER...AND NASHVILLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2. DO NOT
STAY OUTDOORS IF YOU ARE IN THE PATH OF SEVERE THUNDERSTORMS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM FRIDAY MORNING FOR
CENTRAL TENNESSEE.

&&

LAT...LON 3604 8678 3606 8719 3600 8753 3596 8755
      3596 8760 3593 8763 3592 8771 3588 8779
      3665 8780 3666 8680
TIME...MOT...LOC 0255Z 270DEG 28KT 3666 8767 3590 8769

$$

FORECASTER:BOYD

1 follow-up statement

716 
WWUS54 KOHX 250401
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1001 PM CST THU FEB 24 2011

TNC021-037-043-083-085-125-147-161-250411-
/O.CAN.KOHX.SV.W.0002.000000T0000Z-110225T0430Z/
DICKSON TN-HOUSTON TN-DAVIDSON TN-CHEATHAM TN-MONTGOMERY TN-
ROBERTSON TN-STEWART TN-HUMPHREYS TN-
1001 PM CST THU FEB 24 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HUMPHREYS...EASTERN
STEWART...ROBERTSON...MONTGOMERY...CHEATHAM...WESTERN DAVIDSON...
HOUSTON AND DICKSON COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 1 AM CST.

LAT...LON 3604 8678 3606 8719 3600 8753 3596 8755
      3596 8760 3593 8763 3592 8771 3588 8779
      3665 8780 3666 8680
TIME...MOT...LOC 0401Z 270DEG 28KT 3666 8703 3590 8705

$$

LAROSA

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 7:22 PM CST	Tornado Warning	OHX	Stewart	24 min
Feb 24, 8:24 PM CST	Severe Thunderstorm Warning	OHX	Benton, Houston, Humphreys, Stewart	36 min
Feb 24, 8:30 PM CST	Tornado Warning	OHX	Perry	30 min
Feb 24, 8:30 PM CST	Tornado Warning	OHX	Benton, Houston, Humphreys, Stewart	30 min
Feb 24, 8:54 PM CST	Tornado Warning	OHX	Hickman	36 min
Feb 24, 9:00 PM CST	Severe Thunderstorm Warning	OHX	Lewis, Wayne	45 min
Feb 24, 9:00 PM CST	Tornado Warning	OHX	Cheatham, Dickson, Houston, Humphreys, Montgomery	30 min
Feb 24, 9:12 PM CST	Tornado Warning	OHX	Dickson, Humphreys	33 min
Feb 24, 9:20 PM CST	Tornado Warning	OHX	Montgomery, Robertson, Sumner	25 min
Feb 24, 9:26 PM CST	Severe Thunderstorm Warning	OHX	Maury, Williamson	34 min
Feb 24, 9:30 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Macon, Montgomery, Robertson and 3 more	60 min
Feb 24, 9:34 PM CST	Tornado Warning	OHX	Cheatham, Davidson, Williamson	26 min
Feb 24, 9:46 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	59 min
Feb 24, 9:58 PM CST	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Lewis, Wayne	62 min
Feb 24, 10:02 PM CST	Tornado Warning Emergency	OHX	Davidson, Rutherford, Wilson	28 min
Feb 24, 10:08 PM CST	Tornado Warning	OHX	Davidson, Macon, Smith, Sumner, Trousdale, Wilson	37 min
Feb 24, 10:17 PM CST	Tornado Warning	OHX	Macon, Sumner, Trousdale	43 min
Feb 24, 10:26 PM CST	Severe Thunderstorm Warning	OHX	Clay, Fentress, Jackson, Macon, Overton, Pickett and 5 more	79 min
Feb 24, 10:27 PM CST	Flash Flood Warning	OHX	Stewart	3 hr
Feb 24, 10:36 PM CST	Tornado Warning	OHX	Clay, Jackson, Macon	24 min
Feb 24, 10:37 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Marshall, Maury, Rutherford	23 min
Feb 24, 10:39 PM CST	Tornado Warning	OHX	Clay, Fentress, Jackson, Macon, Overton, Pickett and 2 more	36 min
Feb 24, 10:45 PM CST	Severe Thunderstorm Warning	OHX	DeKalb	30 min
Feb 24, 11:03 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Marshall, Rutherford, Warren	42 min
Feb 24, 11:14 PM CST	Severe Thunderstorm Warning	OHX	DeKalb, White	31 min
Feb 24, 11:31 PM CST	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Van Buren, Warren	44 min
Feb 24, 11:34 PM CST	Severe Thunderstorm Warning	OHX	Cumberland	41 min
Feb 24, 11:40 PM CST	Severe Thunderstorm Warning	OHX	White	35 min
Feb 24, 11:40 PM CST	Severe Thunderstorm Warning	OHX	Fentress, Overton, Pickett, Putnam	50 min
Feb 25, 12:07 AM CST	Severe Thunderstorm Warning	OHX	Cumberland	23 min
Feb 25, 1:25 AM CST	River Flood Warning	OHX	Bedford	6 days

Nearby

Severe Thunderstorm Warnings in Tennessee, 2011 Every severe thunderstorm warning 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.