Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 55, NWS Morristown, TN

April 27, 201112 counties in Tennessee

NWS Morristown, TN issued this tornado warning at Apr 27, 2011, 7:54 PM EDT for 12 counties in Tennessee. It was in force for 51 min. 16 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 27, 2011, 7:54 PM EDT (23:54 UTC)
Expired: Apr 27, 2011, 8:45 PM EDT
In force: 51 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

Counties Anderson County, TN, Blount County, TN, Claiborne County, TN, Grainger County, TN, Hamblen County, TN, Jefferson County, TN, Knox County, TN, Loudon County, TN, Monroe County, TN, Roane County, TN, Sevier County, TN, Union County, TN

The radar

The Knoxville radar (KMRX), 40 km from the middle of the area, began a volume at 23:57 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 27, 8:00 PM EDT	HAIL 1.75	Lenoir City, TN
Apr 27, 8:03 PM EDT	FUNNEL CLOUD	Vonore, TN
Apr 27, 8:04 PM EDT	HAIL 1	Farragut, TN
Apr 27, 8:05 PM EDT	FUNNEL CLOUD	Maryville, TN	FUNNEL CLOUD SEEN FROM MAPLE LANE BETWEEN MARYVILLE AND GREENBACK.
Apr 27, 8:05 PM EDT	HAIL 2	2 W Knoxville, TN
Apr 27, 8:09 PM EDT	TORNADO	1 Nw Maryville, TN	EF0. MAX WIND OF 70 MPH.
Apr 27, 8:10 PM EDT	HAIL 1.75	Friendsville, TN
Apr 27, 8:10 PM EDT	HAIL 1.75	Knoxville, TN
Apr 27, 8:15 PM EDT	HAIL 2.75	2 Se Knoxville, TN	LARGE HAIL DAMAGED VEHICLES IN THE AREA.
Apr 27, 8:19 PM EDT	TSTM WND GST 70	Knoxville, TN	OCCURRING ON THE UNIVERSITY OF TENNESSEE CAMPUS.
Apr 27, 8:19 PM EDT	HAIL 1.75	Knoxville, TN	OCCURRING ON THE UNIVERSITY OF TENNESSEE CAMPUS.
Apr 27, 8:20 PM EDT	TSTM WND DMG	2 W Alcoa, TN	MODERATE ROOF DAMAGE TO HOMES IN THE LOUISVILLE AREA.
Apr 27, 8:32 PM EDT	HAIL 1.25	Knoxville, TN	OCCURRING AT INTERSECTION OF CENTRAL AND WOODLAND EAST OF INTERSTATE 275 AND JUST NORTH OF INTERSTATE 40.
Apr 27, 8:38 PM EDT	HAIL 1	Farragut, TN
Apr 27, 8:53 PM EDT	FUNNEL CLOUD	Luttrell, TN
Apr 27, 8:53 PM EDT	HAIL 1	Luttrell, TN

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 27, 4:36 PM EDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.9 hours before the alert went out and 249 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 714 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -84 m²/s²
0-3 km storm-relative helicity: -38 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.

274 
WFUS54 KMRX 272354
TORMRX
TNC001-009-025-057-063-089-093-105-123-145-155-173-280045-
/O.NEW.KMRX.TO.W.0055.110427T2354Z-110428T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
754 PM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* TORNADO WARNING FOR...
  ANDERSON COUNTY IN EAST TENNESSEE...
  BLOUNT COUNTY IN EAST TENNESSEE...
  CLAIBORNE COUNTY IN EAST TENNESSEE...
  GRAINGER COUNTY IN EAST TENNESSEE...
  HAMBLEN COUNTY IN EAST TENNESSEE...
  JEFFERSON COUNTY IN EAST TENNESSEE...
  KNOX COUNTY IN EAST TENNESSEE...
  LOUDON COUNTY IN EAST TENNESSEE...
  NORTHERN MONROE COUNTY IN EAST TENNESSEE...
  ROANE COUNTY IN EAST TENNESSEE...
  SEVIER COUNTY IN EAST TENNESSEE...
  UNION COUNTY IN EAST TENNESSEE...

* UNTIL 845 PM EDT

* AT 748 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LOUDON.
  DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT 65 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  OAK RIDGE...MARYVILLE...ALCOA...CLINTON...KNOXVILLE...
  MAYNARDVILLE...JEFFERSON CITY...RUTLEDGE...MORRISTOWN...FARRAGUT...
  EAGLETON VILLAGE...NEW MARKET...TAZEWELL...RUSSELLVILLE...
  FRIENDSVILLE...CLOVER HILL...KARNS...WILDWOOD...BEARDEN AND POWELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT THURSDAY MORNING 
FOR SOUTHWEST NORTH CAROLINA AND EAST TENNESSEE. A TORNADO WATCH 
ALSO REMAINS IN EFFECT UNTIL 100 AM EDT THURSDAY MORNING FOR 
SOUTHWEST VIRGINIA.

&&

LAT...LON 3650 8362 3625 8319 3579 8385 3556 8427
      3592 8444
TIME...MOT...LOC 2353Z 228DEG 58KT 3575 8423

$$

DH

1 follow-up statement

791 
WWUS54 KMRX 280020
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
820 PM EDT WED APR 27 2011

TNC001-009-025-057-063-089-093-105-123-145-155-173-280045-
/O.CON.KMRX.TO.W.0055.000000T0000Z-110428T0045Z/
ROANE TN-UNION TN-LOUDON TN-ANDERSON TN-CLAIBORNE TN-GRAINGER TN-
HAMBLEN TN-JEFFERSON TN-KNOX TN-MONROE TN-SEVIER TN-BLOUNT TN-
820 PM EDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR BLOUNT...
SEVIER...NORTHERN MONROE...KNOX...JEFFERSON...HAMBLEN...GRAINGER...
CLAIBORNE...ANDERSON...LOUDON...UNION AND ROANE COUNTIES...

AT 816 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR WILDWOOD...OR 6
MILES NORTHEAST OF ALCOA...MOVING NORTHEAST AT 60 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  MAYNARDVILLE...JEFFERSON CITY...MORRISTOWN...RUTLEDGE...NEW
  MARKET...TAZEWELL...LAKE FOREST...SEYMOUR...HALLS...KIMBERLIN
  HEIGHTS...MALONEYVILLE...PAULETTE...MASCOT...KODAK...STRAWBERRY
  PLAINS...BLAINE...LUTTRELL...SHARPS CHAPEL...ROSE HILL AND
  PIEDMONT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EDT THURSDAY MORNING 
FOR SOUTHWEST NORTH CAROLINA AND EASTERN TENNESSEE.

&&

LAT...LON 3650 8362 3625 8319 3579 8385 3556 8427
      3592 8444
TIME...MOT...LOC 0019Z 236DEG 51KT 3588 8385

$$

TD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 7:38 AM EDT	Severe Thunderstorm Warning	MRX	Marion, Sequatchie	52 min
Apr 27, 8:16 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe	44 min
Apr 27, 8:25 AM EDT	Severe Thunderstorm Warning	MRX	Hamilton, Marion, Sequatchie	65 min
Apr 27, 8:37 AM EDT	Tornado Warning	MRX	Bradley, Hamilton, Marion	53 min
Apr 27, 8:49 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Bledsoe, Campbell, Morgan, Roane, Scott	56 min
Apr 27, 9:14 AM EDT	Tornado Warning	MRX	Hamilton	46 min
Apr 27, 9:15 AM EDT	Tornado Warning	MRX	Scott	30 min
Apr 27, 9:20 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, Polk	40 min
Apr 27, 9:33 AM EDT	Tornado Warning	MRX	Meigs, Rhea	42 min
Apr 27, 9:39 AM EDT	Severe Thunderstorm Warning	MRX	McMinn, Monroe	66 min
Apr 27, 9:51 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Blount, Campbell, Grainger, Jefferson, Knox and 6 more	54 min
Apr 27, 9:56 AM EDT	Tornado Warning	MRX	McMinn	49 min
Apr 27, 10:10 AM EDT	Tornado Warning	MRX	Loudon, Meigs, Roane	50 min
Apr 27, 10:23 AM EDT	Tornado Warning	MRX	McMinn, Monroe	22 min
Apr 27, 10:47 AM EDT	Tornado Warning	MRX	Anderson, Knox	18 min
Apr 27, 1:25 PM EDT	Tornado Warning	MRX	Marion	65 min
Apr 27, 2:01 PM EDT	Severe Thunderstorm Warning	MRX	Sequatchie	44 min
Apr 27, 2:10 PM EDT	Tornado Warning	MRX	Sequatchie	50 min
Apr 27, 2:23 PM EDT	Tornado Warning	MRX	Bledsoe, Rhea	52 min
Apr 27, 2:27 PM EDT	Tornado Warning	MRX	Hamilton, Marion	48 min
Apr 27, 2:56 PM EDT	Tornado Warning	MRX	Bradley, Polk	64 min
Apr 27, 3:04 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Loudon, McMinn, Meigs, Monroe, Morgan and 2 more	56 min
Apr 27, 3:07 PM EDT	High Wind Warning	MRX	Blount, Carter, Cocke, Greene, Johnson, Monroe and 2 more	11 hr
Apr 27, 3:11 PM EDT	Tornado Warning	MRX	McMinn, Meigs	49 min
Apr 27, 3:24 PM EDT	Severe Thunderstorm Warning	MRX	Hamilton	36 min
Apr 27, 3:38 PM EDT	Tornado Warning	MRX	Anderson, Blount, Knox, Loudon, Morgan, Roane	52 min
Apr 27, 3:43 PM EDT	Tornado Warning	MRX	Loudon, McMinn, Monroe	47 min
Apr 27, 3:53 PM EDT	Areal Flood Advisory	MRX	Bradley, Hamilton	3 hr
Apr 27, 4:00 PM EDT	Tornado Warning	MRX	Bradley, Hamilton, McMinn, Meigs, Polk	60 min
Apr 27, 4:09 PM EDT	Tornado Warning	MRX	Blount, Knox, Loudon, Monroe, Sevier	51 min
Apr 27, 4:25 PM EDT	Tornado Warning	MRX	McMinn, Monroe, Polk	65 min
Apr 27, 4:39 PM EDT	Areal Flood Advisory	MRX	Blount, Bradley, Knox, Loudon, McMinn, Meigs and 3 more	3 hr
Apr 27, 4:51 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Jefferson, Sevier	54 min
Apr 27, 4:56 PM EDT	Tornado Warning	MRX	Blount, Knox, Loudon, Sevier	49 min
Apr 27, 5:16 PM EDT	Tornado Warning	MRX	Hamilton, Marion, Sequatchie	59 min
Apr 27, 5:18 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Morgan, Scott	42 min
Apr 27, 5:29 PM EDT	Tornado Warning	MRX	Blount, Loudon, Monroe	16 min
Apr 27, 5:38 PM EDT	Tornado Warning	MRX	Campbell, Scott	37 min
Apr 27, 5:45 PM EDT	Tornado Warning	MRX	Anderson, Blount, Knox, Loudon, Sevier	32 min
Apr 27, 5:48 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	57 min
Apr 27, 5:59 PM EDT	Tornado Warning	MRX	Campbell, Claiborne, Morgan, Scott	61 min
Apr 27, 6:01 PM EDT	Tornado Warning	MRX	Bradley, Hamilton	59 min
Apr 27, 6:14 PM EDT	Tornado Warning	MRX	Marion	61 min
Apr 27, 6:39 PM EDT	Tornado Warning	MRX	Bradley, McMinn, Monroe, Polk	66 min
Apr 27, 6:40 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Hawkins, Sullivan, Washington	50 min
Apr 27, 6:43 PM EDT	Tornado Warning	MRX	Hamilton, Marion, Sequatchie	62 min
Apr 27, 6:52 PM EDT	Tornado Warning	MRX	Bledsoe, Rhea	53 min
Apr 27, 6:57 PM EDT	Flash Flood Warning	MRX	Bradley, Hamilton, McMinn, Monroe	3 hr
Apr 27, 7:01 PM EDT	Tornado Warning	MRX	Campbell, Claiborne, Hancock	44 min
Apr 27, 7:01 PM EDT	Tornado Warning	MRX	Bradley, Hamilton, Meigs	59 min
Apr 27, 7:06 PM EDT	Tornado Warning	MRX	Blount, Knox, Monroe, Polk	54 min
Apr 27, 7:13 PM EDT	Flash Flood Warning	MRX	Campbell, Morgan, Scott	3 hr
Apr 27, 7:21 PM EDT	Tornado Warning	MRX	Blount, Bradley, Knox, Loudon, McMinn, Meigs and 3 more	39 min
Apr 27, 7:43 PM EDT	Tornado Warning	MRX	Bledsoe, Hamilton, Rhea, Sequatchie	62 min
Apr 27, 7:49 PM EDT	Tornado Warning	MRX	Blount, Cocke, Hamblen, Jefferson, Knox, Sevier	41 min
Apr 27, 7:53 PM EDT	Flash Flood Warning	MRX	Bledsoe, Marion, Sequatchie	3 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.