Alert archive / Tennessee / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 21, NWS Nashville, TN

March 20, 2004Rutherford County, Wilson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 20, 2004, 3:19 PM CST for Rutherford County, Wilson County, Tennessee. It was in force for 41 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 20, 2004, 3:19 PM CST (21:19 UTC)
Expired: Mar 20, 2004, 4:00 PM CST
In force: 41 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Rutherford County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 37 km from the middle of the area, began a volume at 21:18 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 20, 11:50 AM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.3 hours before the alert went out and 30 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: 1720 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

303 
WUUS54 KOHX 202119
SVRBNA
TNC149-189-202200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
317 PM CST SAT MAR 20 2004

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  RUTHERFORD COUNTY IN TENNESSEE
  WILSON COUNTY IN TENNESSEE

* UNTIL 400 PM CST

* AT 313 PM CST...DOPPLER RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS
  FROM 12 MILES EAST OF LEBANON TO 12 MILES SOUTH OF LA VERGNE...
  MOVING EAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE TUCKERS CROSSROADS...
  RURAL HILL...SMYRNA...WALTERHILL AND WATERTOWN.

THIS LINE OF STORMS WILL LIKELY PRODUCE DAMAGING WINDS UP TO 60 
MPH...WITH THE POSSIBILITY OF HAIL UP TO THE SIZE OF PENNIES.

A STORM SPOTTER REPORTED TREES DOWN IN LAVERGNE AROUND 305 PM CST.

SEVERE THUNDERSTORM WINDS CAN BE AS DESTRUCTIVE AS A TORNADO. FOR
YOUR SAFETY, GO TO A SAFE PLACE IMMEDIATELY.

LAT...LON 3597 8603 3597 8616 3576 8619 3559 8637
          3578 8664 3600 8660 3610 8649 3630 8661
          3633 8615

$$
STEIGERWALDT

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 20, 12:13 PM CST	Severe Thunderstorm Warning	OHX	Stewart	62 min
Mar 20, 12:58 PM CST	Severe Thunderstorm Warning	OHX	Montgomery	62 min
Mar 20, 1:13 PM CST	Severe Thunderstorm Warning	OHX	Stewart	62 min
Mar 20, 1:15 PM CST	Severe Thunderstorm Warning	OHX	Benton	45 min
Mar 20, 1:30 PM CST	Tornado Warning	OHX	Stewart	45 min
Mar 20, 1:36 PM CST	Severe Thunderstorm Warning	OHX	Robertson	54 min
Mar 20, 1:41 PM CST	Flash Flood Warning	OHX	Stewart	2 hr
Mar 20, 1:41 PM CST	Severe Thunderstorm Warning	OHX	Sumner	34 min
Mar 20, 1:45 PM CST	Severe Thunderstorm Warning	OHX	Houston	60 min
Mar 20, 1:58 PM CST	Severe Thunderstorm Warning	OHX	Montgomery	62 min
Mar 20, 2:07 PM CST	Severe Thunderstorm Warning	OHX	Dickson, Humphreys	38 min
Mar 20, 2:10 PM CST	Severe Thunderstorm Warning	OHX	Dickson, Humphreys	35 min
Mar 20, 2:11 PM CST	Severe Thunderstorm Warning	OHX	Smith, Wilson	49 min
Mar 20, 2:32 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Robertson	43 min
Mar 20, 2:39 PM CST	Flash Flood Warning	OHX	Sumner	2 hr
Mar 20, 2:42 PM CST	Severe Thunderstorm Warning	OHX	Davidson, Sumner	33 min
Mar 20, 2:47 PM CST	Severe Thunderstorm Warning	OHX	Williamson	43 min
Mar 20, 2:55 PM CST	Severe Thunderstorm Warning	OHX	Jackson, Overton	35 min
Mar 20, 3:18 PM CST	Severe Thunderstorm Warning	OHX	Fentress	42 min
Mar 20, 3:50 PM CST	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Warren	55 min
Mar 20, 4:09 PM CST	Severe Thunderstorm Warning	OHX	White	31 min
Mar 20, 4:29 PM CST	Severe Thunderstorm Warning	OHX	Cumberland	31 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2004 Every severe thunderstorm warning in 2004

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.