Alert archive / Tennessee / Tornado Warnings in 2008

Tornado Warning 2, NWS Morristown, TN

February 6, 2008Hamilton County, Tennessee

NWS Morristown, TN issued this tornado warning at Feb 6, 2008, 6:37 AM EST for Hamilton County, Tennessee. It was in force for 38 min. 1 report 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 6, 2008, 6:37 AM EST (11:37 UTC)
Expired: Feb 6, 2008, 7:15 AM EST
In force: 38 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

County Hamilton County, TN

The radar

The Northeast Alabama radar (KHTX), 87 km from the middle of the area, began a volume at 11:39 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
Feb 6, 7:00 AM EST	TSTM WND DMG	Chattanooga, TN	AROUND 10 TREES DOWN ACROSS THE COUNTY. REPORTED BY HAMILTON COUNTY HWY DEPT.

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 6, 5:06 AM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 11.6 hours before the alert went out and 165 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: 706 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 812 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 300 m²/s²
0-3 km storm-relative helicity: 362 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KMRX 061138
TORMRX
TNC065-061215-
/O.NEW.KMRX.TO.W.0002.080206T1137Z-080206T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
637 AM EST WED FEB 6 2008

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* TORNADO WARNING FOR...
  HAMILTON COUNTY IN EAST TENNESSEE...
  THIS INCLUDES THE CITY OF CHATTANOOGA...

* UNTIL 715 AM EST

* AT 534 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 28 MILES
  SOUTHWEST OF CHATTANOOGA...MOVING NORTHEAST AT 55 MPH.

* THE TORNADO WILL BE NEAR...
  CHATTANOOGA AND 8 MILES SOUTHEAST OF SIGNAL MOUNTAIN BY 705 AM
  EST...
  HARRISON BY 710 AM EST...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING HAIL
OF 3/4 INCH DIAMETER OR LARGER AND DESTRUCTIVE OUTFLOW WINDS IN
EXCESS OF 50 MPH.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT OR STORM
SHELTER. 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.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 AM EST WEDNESDAY MORNING
FOR CENTRAL TENNESSEE.

LAT...LON 3546 8514 3529 8493 3514 8502 3504 8499
      3503 8497 3499 8498 3499 8545 3505 8537
      3509 8536 3513 8540 3516 8539 3532 8525
      3547 8517
TIME...MOT...LOC 1137Z 232DEG 48KT 3482 8559

$$

DH

1 follow-up statement

000 
WWUS54 KMRX 061210
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
709 AM EST WED FEB 6 2008

TNC065-061215-
/O.CON.KMRX.TO.W.0002.000000T0000Z-080206T1215Z/
HAMILTON TN-
709 AM EST WED FEB 6 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 AM EST FOR HAMILTON
COUNTY...

AT 707 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A POSSIBLE TORNADO.  THIS TORNADO WAS LOCATED NEAR 
CHATTANOOGA...MOVING NORTHEAST AT 55 MPH.

THE TORNADO WILL BE NEAR...
  HARRISON AND 9 MILES SOUTH OF SHADY GROVE BY 715 AM EST...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING HAIL
OF 3/4 INCH OR LARGER AND DESTRUCTIVE OUTFLOW WINDS IN EXCESS OF 50
MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 AM EST WEDNESDAY MORNING
FOR CENTRAL TENNESSEE.

LAT...LON 3546 8514 3529 8493 3514 8502 3504 8499
      3503 8497 3499 8498 3499 8545 3505 8537
      3509 8536 3513 8540 3516 8539 3532 8525
      3547 8517
TIME...MOT...LOC 1209Z 232DEG 48KT 3508 8518

$$

DH

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 6, 2:41 AM EST	High Wind Warning	MRX	Blount, Carter, Cocke, Greene, Johnson, Monroe and 3 more	16 hr
Feb 6, 5:56 AM EST	Severe Thunderstorm Warning	MRX	Campbell, Morgan, Scott	49 min
Feb 6, 6:05 AM EST	Tornado Warning	MRX	Marion	55 min
Feb 6, 6:17 AM EST	Severe Thunderstorm Warning	MRX	Bledsoe, Sequatchie	58 min
Feb 6, 6:55 AM EST	Severe Thunderstorm Warning	MRX	Meigs, Rhea	50 min
Feb 6, 6:57 AM EST	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Morgan, Scott	48 min
Feb 6, 7:14 AM EST	Severe Thunderstorm Warning	MRX	Bradley, Hamilton	46 min
Feb 6, 7:18 AM EST	Tornado Warning	MRX	Bradley, Hamilton	57 min
Feb 6, 7:44 AM EST	Severe Thunderstorm Warning	MRX	McMinn, Polk	46 min
Feb 6, 7:52 AM EST	Severe Thunderstorm Warning	MRX	Anderson, Blount, Knox, Loudon, Roane, Union	38 min
Feb 6, 7:58 AM EST	Severe Thunderstorm Warning	MRX	Monroe	47 min
Feb 6, 8:11 AM EST	Areal Flood Advisory	MRX	Bradley, Hamilton	2 hr
Feb 6, 8:12 AM EST	Severe Thunderstorm Warning	MRX	Blount, Loudon	48 min
Feb 6, 1:45 PM EST	Severe Thunderstorm Warning	MRX	Hawkins, Sullivan	45 min

Nearby

Tornado Warnings in Tennessee, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.