Alert archive / Tennessee / Tornado Warnings in 2009

Tornado Warning 3, NWS Nashville, TN

February 11, 2009Cumberland County, Fentress County, Tennessee

NWS Nashville, TN issued this tornado warning at Feb 11, 2009, 1:59 PM CST for Cumberland County, Fentress County, Tennessee. It was in force for 31 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: Feb 11, 2009, 1:59 PM CST (19:59 UTC)
Expired: Feb 11, 2009, 2:30 PM CST
In force: 31 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Cumberland County, TN, Fentress County, TN

The radar

The Nashville radar (KOHX), 138 km from the middle of the area, began a volume at 19:59 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 11, 2:15 PM CST	TSTM WND DMG	10 Ene Monterey, TN	* 1 INJ * 30-50 TREES DOWN OFF HIGHWAY 62 LITTLE HURRICANE TRAIL. MAN PINNED IN CAR BY TREE AND TRANSPORTED TO HOSPITAL. NWS PERSONNEL WILL SURVEY AREA TOMORROW.
Feb 11, 2:15 PM CST	TORNADO	10 Ene Monterey, TN	TORNADO TOUCHDOWN NEAR LITTLE HURRICANE TRAIL AND HWY 62. MORE DETAILS WILL BE AVAILABLE THIS AFTERNOON.

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 11, 10:38 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.0 hours before the alert went out and 142 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: 722 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 510 m²/s²
0-3 km storm-relative helicity: 444 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.

000 
WFUS54 KOHX 111959
TOROHX
TNC035-049-112030-
/O.NEW.KOHX.TO.W.0003.090211T1959Z-090211T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
159 PM CST WED FEB 11 2009

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CUMBERLAND COUNTY IN MIDDLE TENNESSEE...
  SOUTHERN FENTRESS COUNTY IN MIDDLE TENNESSEE...

* UNTIL 230 PM CST

* AT 155 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PLEASANT
  HILL...OR 10 MILES NORTHWEST OF CROSSVILLE...MOVING NORTHEAST AT 50
  MPH.

* THE TORNADO WILL AFFECT MAINLY RURAL AREAS IN NORTHERN CUMBERLAND  
  COUNTY AND SOUTHERN FENTRESS COUNTY.

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.

LAT...LON 3593 8518 3604 8525 3611 8523 3611 8514
      3614 8513 3614 8510 3615 8512 3619 8509
      3632 8483 3629 8481 3627 8487 3623 8487
      3621 8489 3616 8489 3609 8481
TIME...MOT...LOC 1958Z 240DEG 44KT 3605 8514

$$

ROSE

2 follow-up statements

000 
WWUS54 KOHX 112013
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
213 PM CST WED FEB 11 2009

TNC035-049-112030-
/O.CON.KOHX.TO.W.0003.000000T0000Z-090211T2030Z/
CUMBERLAND TN-FENTRESS TN-
213 PM CST WED FEB 11 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CST FOR SOUTHERN
FENTRESS AND NORTH CENTRAL CUMBERLAND COUNTIES...

AT 210 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED OVER EXTREME NORTH
CENTRAL CUMBERLAND COUNTY...OR 13 MILES NORTH OF CROSSVILLE...MOVING
NORTHEAST AT 50 MPH.

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.

LAT...LON 3611 8484 3602 8497 3619 8509 3632 8483
      3629 8481 3627 8487 3623 8487 3621 8489
      3616 8489 3612 8484
TIME...MOT...LOC 2013Z 240DEG 44KT 3616 8490

$$
STEIGERWALDT

000 
WWUS54 KOHX 112033
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
233 PM CST WED FEB 11 2009

TNC035-049-112040-
/O.EXP.KOHX.TO.W.0003.000000T0000Z-090211T2030Z/
CUMBERLAND TN-FENTRESS TN-
232 PM CST WED FEB 11 2009

...THE TORNADO WARNING FOR SOUTHERN FENTRESS AND NORTH CENTRAL
CUMBERLAND COUNTIES HAS EXPIRED...

ALTHOUGH THE LINE OF SEVERE THUNDERSTORMS HAS NOW MOVED TO THE EAST 
OF THE AREA...DUE TO A STRONG CHANGE IN PRESSURE ACROSS THE REGION
...YOU CAN EXPECT WINDS TO GUST TO AROUND 50 MPH AT TIMES FOR 
MOST OF THE AFTERNOON.

THE TORNADO WATCH IN EFFECT FOR THE AREA WILL BE CANCELLED SHORTLY.

LAT...LON 3611 8484 3602 8497 3619 8509 3632 8483
      3629 8481 3627 8487 3623 8487 3621 8489
      3616 8489 3612 8484
TIME...MOT...LOC 2030Z 240DEG 44KT 3626 8467

$$
STEIGERWALDT

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 11, 10:46 AM CST	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Lawrence, Lewis, Montgomery	29 min
Feb 11, 11:05 AM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Williamson	55 min
Feb 11, 11:10 AM CST	Severe Thunderstorm Warning	OHX	Giles, Marshall, Maury	50 min
Feb 11, 11:34 AM CST	Severe Thunderstorm Warning	OHX	Davidson, Robertson, Sumner, Wilson	56 min
Feb 11, 11:39 AM CST	Severe Thunderstorm Warning	OHX	Bedford, Rutherford, Williamson	66 min
Feb 11, 12:01 PM CST	Tornado Warning	OHX	Marshall	14 min
Feb 11, 12:08 PM CST	Severe Thunderstorm Warning	OHX	Macon, Smith, Trousdale, Wilson	37 min
Feb 11, 12:24 PM CST	Severe Thunderstorm Warning	OHX	Cannon, Coffee, DeKalb	36 min
Feb 11, 12:46 PM CST	Tornado Warning	OHX	Cannon, Coffee, DeKalb, Warren	29 min
Feb 11, 12:50 PM CST	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Overton, Putnam, Smith	40 min
Feb 11, 12:58 PM CST	Severe Thunderstorm Warning	OHX	Cannon, Coffee, DeKalb, Grundy, Warren, White	32 min
Feb 11, 1:17 PM CST	Severe Thunderstorm Warning	OHX	Grundy, Van Buren, Warren, White	43 min
Feb 11, 1:24 PM CST	Severe Thunderstorm Warning	OHX	Clay, Overton, Pickett, Putnam	36 min
Feb 11, 1:41 PM CST	Severe Thunderstorm Warning	OHX	Cumberland, Fentress, Overton, Pickett, Putnam, Van Buren and 1 more	49 min

Nearby

Tornado Warnings in Tennessee, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.