Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 92, NWS Nashville, TN

May 2, 2011Maury County, Williamson County, Tennessee

NWS Nashville, TN issued this tornado warning at May 2, 2011, 5:48 PM CDT for Maury County, Williamson County, Tennessee. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 2, 2011, 5:48 PM CDT (22:48 UTC)
Expired
May 2, 2011, 6:15 PM CDT
In force
27 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon

Counties Maury County, TN, Williamson County, TN

The radar

The Nashville radar (KOHX), 69 km from the middle of the area, began a volume at 22:49 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.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.8 hours before the alert went out and 57 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2011-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 508 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2011-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
508 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
594 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.2
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

046 
WFUS54 KOHX 022248
TOROHX
TNC119-187-022315-
/O.NEW.KOHX.TO.W.0092.110502T2248Z-110502T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
548 PM CDT MON MAY 2 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL MAURY COUNTY IN MIDDLE TENNESSEE...
  WESTERN WILLIAMSON COUNTY IN MIDDLE TENNESSEE...

* UNTIL 615 PM CDT

* AT 548 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 11 MILES NORTHWEST OF COLUMBIA...AND MOVING
  NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF CENTRAL WILLIAMSON AND NORTHERN MAURY
  COUNTIES.

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 3577 8723 3583 8722 3598 8701 3587 8684
      3567 8711
TIME...MOT...LOC 2248Z 223DEG 31KT 3575 8716

$$
31
1 follow-up statement
176 
WWUS54 KOHX 022307
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
607 PM CDT MON MAY 2 2011

TNC119-022317-
/O.CAN.KOHX.TO.W.0092.000000T0000Z-110502T2315Z/
MAURY TN-
607 PM CDT MON MAY 2 2011

...THE TORNADO WARNING FOR NORTH CENTRAL MAURY COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3593 8694 3592 8691 3587 8684 3578 8697
      3584 8717 3596 8699
TIME...MOT...LOC 2307Z 223DEG 31KT 3587 8702

$$

TNC187-022315-
/O.CON.KOHX.TO.W.0092.000000T0000Z-110502T2315Z/
WILLIAMSON TN-
607 PM CDT MON MAY 2 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL WILLIAMSON COUNTY
UNTIL 615 PM CDT...

AT 607 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 10 MILES NORTHWEST OF SPRING HILL...OR 13 MILES
SOUTHWEST OF FRANKLIN...MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF CENTRAL WILLIAMSON COUNTY.

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 3593 8694 3592 8691 3587 8684 3578 8697
      3584 8717 3596 8699
TIME...MOT...LOC 2307Z 223DEG 31KT 3587 8702

$$
31

The office that day

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

IssuedProductOfficeCountiesLasted
May 1, 9:01 PM CDTRiver Flood AdvisoryOHXHickman7 hr
May 2, 3:54 PM CDTSevere Thunderstorm WarningOHXPerry, Wayne36 min
May 2, 4:22 PM CDTTornado WarningOHXWayne23 min
May 2, 4:34 PM CDTSevere Thunderstorm WarningOHXHickman, Lewis, Perry, Wayne26 min
May 2, 4:42 PM CDTTornado WarningOHXLewis, Wayne33 min
May 2, 4:58 PM CDTSevere Thunderstorm WarningOHXHickman, Lewis, Maury, Perry32 min
May 2, 5:02 PM CDTTornado WarningOHXLawrence, Wayne28 min
May 2, 5:30 PM CDTTornado WarningOHXLawrence, Lewis, Maury30 min
May 2, 6:00 PM CDTTornado WarningOHXMaury9 min
May 2, 6:11 PM CDTTornado WarningOHXMaury34 min

Nearby

Tornado Warnings in Tennessee, 2011Every tornado warning in 2011Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.