Alert archive / Tennessee / Tornado Warnings in 2011

Tornado Warning 100, NWS Nashville, TN

June 18, 2011Bedford County, Marshall County, Tennessee

NWS Nashville, TN issued this tornado warning at Jun 18, 2011, 1:39 PM CDT for Bedford County, Marshall County, Tennessee. It was in force for 36 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: Jun 18, 2011, 1:39 PM CDT (18:39 UTC)
Expired: Jun 18, 2011, 2:15 PM CDT
In force: 36 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Bedford County, TN, Marshall County, TN

The radar

The Northeast Alabama radar (KHTX), 73 km from the middle of the area, began a volume at 18:39 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
Jun 18, 1:45 PM CDT	TSTM WND DMG	Cornersville, TN	SEVERAL TREES DOWN NEAR CORNERSVILLE

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
Jun 18, 9:39 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.7 hours before the alert went out and 89 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: 2056 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 822 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 191 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.9

Open this sounding in Storm Lab

The text

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

883 
WFUS54 KOHX 181839
TOROHX
TNC003-117-181915-
/O.NEW.KOHX.TO.W.0100.110618T1839Z-110618T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
139 PM CDT SAT JUN 18 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN BEDFORD COUNTY IN MIDDLE TENNESSEE...
  SOUTHERN MARSHALL COUNTY IN MIDDLE TENNESSEE...

* UNTIL 215 PM CDT

* AT 136 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 7 MILES SOUTH OF LEWISBURG...AND MOVING EAST AT
  30 MPH.

* THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF SOUTHERN
  MARSHALL AND SOUTHWESTERN BEDFORD 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 3527 8682 3532 8682 3532 8685 3531 8686
      3533 8690 3546 8686 3543 8646 3536 8648
      3536 8653 3537 8658 3534 8660 3532 8664
      3532 8667 3527 8673
TIME...MOT...LOC 1840Z 279DEG 27KT 3535 8676

$$

ROSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 11:49 AM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys, Perry	41 min
Jun 18, 12:22 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Humphreys, Lewis, Perry, Wayne	38 min
Jun 18, 12:54 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lawrence, Lewis, Maury, Williamson	41 min
Jun 18, 1:09 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Coffee	51 min
Jun 18, 1:21 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Giles, Lawrence, Marshall, Maury	39 min
Jun 18, 1:58 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Coffee, Marshall	47 min
Jun 18, 2:14 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Warren	46 min

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.