Alert archive / Tennessee / Flash Flood Warnings in 2004

Flash Flood Warning 99, NWS Nashville, TN

December 7, 2004Davidson County, Sumner County, Williamson County, Tennessee

NWS Nashville, TN issued this flash flood warning at Dec 7, 2004, 4:03 AM CST for Davidson County, Sumner County, Williamson County, Tennessee. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 7, 2004, 4:03 AM CST (10:03 UTC)
Expired: Dec 7, 2004, 7:00 AM CST
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Davidson County, TN, Sumner County, TN, Williamson County, TN

The radar

The Nashville radar (KOHX), 17 km from the middle of the area, began a volume at 10:03 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 00:00Z, 10.1 hours before the alert went out and 14 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: 63 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 662 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 146 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 
WGUS54 KOHX 071005
FFWOHX
TNC037-165-187-071300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
403 AM CST TUE DEC 7 2004

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DAVIDSON COUNTY IN TENNESSEE
  SUMNER COUNTY IN TENNESSEE
  WILLIAMSON COUNTY IN TENNESSEE
  THIS INCLUDES THE CITIES OF NASHVILLE...GALLATIN AND FRANKLIN

* UNTIL 700 AM CST

* AT 358 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN OVER THE WARNED AREA. RAINFALL RATES ARE APPROACHING
  ONE INCH PER HOUR. GIVEN THE SATURATED GROUND...THE ADDITIONAL RAINFALL
  WILL LIKELY CAUSE FLOODING OF LOW LYING OR FLOOD PRONE AREAS AS WELL AS
  POSSIBLE FLOODING OF CITRY STREETS IN URBAN AREAS.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WESTMORELAND...PORTLAND...OLD HICKORY...MILLERSVILLE...LAKEWOOD...
  HENDERSONVILLE AND GOODLETTSVILLE.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3606 8706 3604 8718 3586 8720 3571 8676
      3600 8662 3624 8657 3630 8649 3635 8632
      3663 8621 3663 8655 3636 8686

$$

JLM

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 7, 2:35 AM CST	Flash Flood Warning	OHX	Benton, Houston, Humphreys, Perry, Stewart, Wayne	3 hr
Dec 7, 3:03 AM CST	Flash Flood Warning	OHX	Cheatham, Dickson, Hickman, Lewis, Montgomery, Robertson	3 hr
Dec 7, 3:27 AM CST	Flash Flood Warning	OHX	Giles, Lawrence	3 hr
Dec 7, 4:22 AM CST	Flash Flood Warning	OHX	Maury	3 hr
Dec 7, 4:55 AM CST	Flash Flood Warning	OHX	Bedford, Clay, Jackson, Macon, Marshall, Rutherford and 3 more	3 hr
Dec 7, 5:05 AM CST	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Jackson, Putnam, Rutherford, Smith and 1 more	25 min
Dec 7, 5:11 AM CST	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Jackson, Putnam, Rutherford, Smith and 1 more	19 min
Dec 7, 5:47 AM CST	Flash Flood Warning	OHX	Cannon, Coffee, DeKalb, Putnam	3 hr
Dec 7, 6:41 AM CST	Flash Flood Warning	OHX	Fentress, Overton, Pickett, Putnam	3 hr

Nearby

Flash Flood Warnings in Tennessee, 2004 Every flash flood 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.