Alert archive / Tennessee / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 32, NWS Nashville, TN

March 23, 2011Fentress County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 23, 2011, 2:47 PM CDT for Fentress County, Tennessee. It was in force for 13 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: Mar 23, 2011, 2:47 PM CDT (19:47 UTC)
Expired: Mar 23, 2011, 3:00 PM CDT
In force: 13 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

County Fentress County, TN

The radar

The Knoxville radar (KMRX), 122 km from the middle of the area, began a volume at 19:48 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, 7.8 hours before the alert went out and 169 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: 999 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 301 m²/s²
0-3 km storm-relative helicity: 319 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.

704 
WUUS54 KOHX 231947
SVROHX
TNC049-232000-
/O.NEW.KOHX.SV.W.0032.110323T1947Z-110323T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
247 PM CDT WED MAR 23 2011

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL FENTRESS COUNTY IN MIDDLE TENNESSEE...

* UNTIL 300 PM CDT

* AT 244 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THE
  STORM WAS NEAR ALLARDT...MOVING EAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ALLARDT
  ARMATHWAITE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CONTAIN DAMAGING WINDS 58 MPH OR STRONGER...OR
HAIL ONE INCH OR LARGER. FOR YOUR SAFETY...TAKE SHELTER INSIDE A
BUILDING LOCATION NOW.

&&

LAT...LON 3638 8468 3636 8470 3636 8471 3633 8475
      3633 8477 3629 8478 3629 8490 3647 8491
      3649 8470 3644 8469 3640 8465
TIME...MOT...LOC 1947Z 267DEG 52KT 3639 8478

$$

FORECASTER: ROSE

1 follow-up statement

870 
WWUS54 KOHX 231957
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
257 PM CDT WED MAR 23 2011

TNC049-232007-
/O.EXP.KOHX.SV.W.0032.000000T0000Z-110323T2000Z/
FENTRESS TN-
257 PM CDT WED MAR 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL FENTRESS COUNTY
WILL EXPIRE AT 300 PM CDT...

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

LAT...LON 3638 8468 3636 8470 3636 8471 3633 8475
      3633 8477 3629 8478 3629 8490 3647 8491
      3649 8470 3644 8469 3640 8465
TIME...MOT...LOC 1957Z 267DEG 52KT 3639 8460

$$

ROSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 23, 1:45 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Pickett	15 min
Mar 23, 2:04 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, DeKalb, Putnam, White	26 min
Mar 23, 2:07 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Pickett	23 min
Mar 23, 2:28 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	22 min
Mar 23, 5:30 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Overton	60 min
Mar 23, 5:37 PM CDT	Severe Thunderstorm Warning	OHX	Trousdale, Wilson	23 min
Mar 23, 6:03 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Smith, Wilson	27 min
Mar 23, 6:11 PM CDT	Tornado Warning	OHX	DeKalb, Smith, Wilson	34 min
Mar 23, 6:15 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Fentress, Overton, Pickett	30 min
Mar 23, 6:40 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Rutherford, Wilson	35 min
Mar 23, 6:42 PM CDT	Severe Thunderstorm Warning	OHX	Marshall, Maury, Rutherford	34 min
Mar 23, 6:44 PM CDT	Severe Thunderstorm Warning	OHX	Fentress	16 min
Mar 23, 6:51 PM CDT	Tornado Warning	OHX	Rutherford	24 min
Mar 23, 6:52 PM CDT	Tornado Warning	OHX	DeKalb, White	23 min
Mar 23, 6:59 PM CDT	Tornado Warning	OHX	Giles	31 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2011 Every severe thunderstorm warning 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.