Alert archive / Tennessee / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 169, NWS Nashville, TN

July 4, 20045 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 4, 2004, 3:53 PM CDT for 5 counties in Tennessee. It was in force for 52 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: Jul 4, 2004, 3:53 PM CDT (20:53 UTC)
Expired: Jul 4, 2004, 4:45 PM CDT
In force: 52 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Davidson County, TN, Marshall County, TN, Maury County, TN, Robertson County, TN, Williamson County, TN

The radar

The Nashville radar (KOHX), 38 km from the middle of the area, began a volume at 20:56 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 4, 3:25 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.9 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: 462 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 576 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 36 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 
WUUS54 KOHX 042053
SVRBNA
TNC037-117-119-147-187-042145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
350 PM CDT SUN JUL 4 2004

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DAVIDSON COUNTY IN TENNESSEE
  MARSHALL COUNTY IN TENNESSEE
  MAURY COUNTY IN TENNESSEE
  ROBERTSON COUNTY IN TENNESSEE
  WILLIAMSON COUNTY IN TENNESSEE

* UNTIL 445 PM CDT

* AT 341 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM NEAR CLARKSVILLE...TO NEAR ASHLAND CITY
  TO NEAR COLUMBIA...AND WAS MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FOREST HILLS AROUND 405 PM CDT
  NASHVILLE AROUND 415 PM CDT
  LAKEWOOD AROUND 440 PM CDT

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING.

LAT...LON 3610 8701 3592 8714 3553 8718 3536 8671
      3615 8660 3661 8672 3660 8706 3627 8693

$$
19

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Nashville, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 4, 1:00 PM CDT, 2 hours 53 minutes earlier.

Area forecast discussion, Jul 4, 1:00 PM CDT, 2 hours 53 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
100 PM CDT SUN JUL 4 2004

.DISCUSSION...
MCS BEARING DOWN ON MISSISSIPPI RIVER AT EARLY AFTERNOON. SEVERE
THUNDERSTORM WATCH BOX OUT OVER THE WEST HALF OF MID STATE UNTIL
4 PM CDT. WILL HAVE TO MONITOR MCS NEXT SEVERAL HOURS. AT PRESENT
RATE OF SPEED MCS SHOULD REACH TN RVR AROUND 230 PM CDT AND IN THE
NASHVILLE AREA AROUND 4 PM CDT.

EXPECT SOME SHOWERS/TSTMS AROUND TONIGHT AND AGAIN ON MONDAY AS
AIRMASS WILL REMAIN MOIST AND UNSTABLE. TEMPS WILL REMAIN AT OR
SLIGHTLY ABOVE CLIMATOLOGY AS UPPER LEVEL RIDGING REMAINS NEARBY.

&&

.BNA WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

BOYD
01

Hazardous weather outlook, Jul 4, 10:55 AM CDT, 4 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK...CORRECTED TO CHANGE MAIN SEVERE WEATHER AREA
NATIONAL WEATHER SERVICE NASHVILLE TN
1055 AM CDT SUN JUL 4 2004

TNZ005>011-022>034-056>066-075-077>080-093>095-051030-
BEDFORD-BENTON-CANNON-CHEATHAM-CLAY-COFFEE-CUMBERLAND-DAVIDSON-
DEKALB-DICKSON-FENTRESS-GILES-GRUNDY-HICKMAN-HOUSTON-HUMPHREYS-
JACKSON-LAWRENCE-LEWIS-MACON-MARSHALL-MAURY-MONTGOMERY-OVERTON-PERRY-
PICKETT-PUTNAM-ROBERTSON-RUTHERFORD-SMITH-STEWART-SUMNER-TROUSDALE-
VAN BUREN-WARREN-WAYNE-WHITE-WILLIAMSON-WILSON-
530 AM CDT SUN JUL 4 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT
ISOLATED SEVERE THUNDERSTORMS...WITH STRONG DAMAGING WINDS... ARE
POSSIBLE IN MIDDLE TENNESSEE THIS AFTERNOON. LATE THIS MORNING...AN
AREA OF STRONG TO SEVERE THUNDERSTORMS WAS MOVING RAPIDLY SOUTHEASTWARD
ACROSS SOUTHERN MISSOURI AND NORTHERN ARKANSAS. STRAIGHT LINE WIND
DAMAGE WAS REPORTED THIS MORNING WITH SOME OF THESE STORMS AND ...IF
THE STORMS CONTINUE ON THEIR PRESENT TRACK...THE SAME TYPE OF SEVERE
WEATHER WILL REACH WESTERN AND SOUTHERN SECTIONS OF THE MID STATE
LATER THIS AFTERNOON. CONDITIONS WILL BE MOST CONDUCIVE FOR SEVERE
WEATHER IN AREAS SOUTH OF A LINE FROM CAMDEN...TO CENTERVILLE...
COLUMBIA...SHELBYVILLE...AND MANCHESTER. THIS AREA ALSO INCLUDES THE
CITIES OF LAWRENCEBURG...WAYNESBORO...PULASKI...AND LEWISBURG.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
THERE IS A CHANCE OF SCATTERED THUNDERSTORM EACH DAY THROUGH THE
PERIOD. MONDAY THERE WILL BE A SLIGHT RISK OF SEVERE WEATHER IN
THE NORTHERN ZONES. MOST OF THE THREAT OF SEVERE WEATHER WILL BE FROM
STRONG GUSTY WINDS AND ISOLATED AREAS OF FLASH FLOODING.

.SPOTTER INFORMATION STATEMENT...
ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL MAY BE
REQUIRED THIS AFTERNOON.

19

In the hours before

Local storm report, Jul 4, 3:06 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
306 PM CDT SUN JUL 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0300 PM     TSTM WND DMG     5 W DOVER               36.48N 87.93W
07/04/2004                   STEWART            TN   LAW ENFORCEMENT

            TREE DOWN

&&

05

Local storm report, Jul 4, 3:53 PM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
353 PM CDT SUN JUL 04 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0320 PM     TSTM WND DMG     LINDEN                  35.61N 87.84W
07/04/2004                   PERRY              TN   LAW ENFORCEMENT

            POWER LINE DOWN, TREES DOWN

&&

05

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 2:19 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys, Perry	56 min
Jul 4, 2:37 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	53 min
Jul 4, 2:51 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	54 min
Jul 4, 3:10 PM CDT	Severe Thunderstorm Warning	OHX	Humphreys, Perry	50 min
Jul 4, 3:21 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery	54 min
Jul 4, 3:25 PM CDT	Severe Thunderstorm Warning	OHX	Dickson	35 min
Jul 4, 3:30 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham	60 min
Jul 4, 3:40 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lawrence, Lewis	50 min
Jul 4, 3:46 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lawrence, Lewis	44 min
Jul 4, 4:05 PM CDT	Severe Thunderstorm Warning	OHX	Giles	70 min
Jul 4, 4:34 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Sumner, Wilson	41 min
Jul 4, 4:39 PM CDT	Severe Thunderstorm Warning	OHX	Maury	36 min
Jul 4, 4:44 PM CDT	Severe Thunderstorm Warning	OHX	Davidson	16 min
Jul 4, 4:46 PM CDT	Severe Thunderstorm Warning	OHX	Robertson	29 min
Jul 4, 4:51 PM CDT	Severe Thunderstorm Warning	OHX	Marshall	54 min
Jul 4, 4:57 PM CDT	Severe Thunderstorm Warning	OHX	Williamson	18 min
Jul 4, 5:03 PM CDT	Severe Thunderstorm Warning	OHX	Cannon	27 min
Jul 4, 5:08 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Williamson	22 min
Jul 4, 5:11 PM CDT	Severe Thunderstorm Warning	OHX	Bedford	64 min
Jul 4, 5:20 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Rutherford, Smith, Wilson	25 min
Jul 4, 5:27 PM CDT	Severe Thunderstorm Warning	OHX	Coffee	78 min
Jul 4, 5:31 PM CDT	Severe Thunderstorm Warning	OHX	Cannon	29 min
Jul 4, 5:35 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Warren	25 min
Jul 4, 5:46 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Jackson, Putnam, Smith	29 min
Jul 4, 6:02 PM CDT	Severe Thunderstorm Warning	OHX	Van Buren, Warren, White	28 min
Jul 4, 6:16 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Jackson, Overton, Putnam, White	29 min
Jul 4, 6:29 PM CDT	Severe Thunderstorm Warning	OHX	Van Buren, Warren	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.