Alert archive / Tennessee / Flash Flood Warnings in 2004

Flash Flood Warning 66, NWS Nashville, TN

September 12, 2004Benton County, Humphreys County, Tennessee

NWS Nashville, TN issued this flash flood warning at Sep 12, 2004, 4:57 PM CDT for Benton County, Humphreys 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: Sep 12, 2004, 4:57 PM CDT (21:57 UTC)
Expired: Sep 12, 2004, 8:00 PM CDT
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Benton County, TN, Humphreys County, TN

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.0 hours before the alert went out and 126 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: 416 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1012 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 113 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 122202
FFWBNA
TNC005-085-130100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
457 PM CDT SUN SEP 12 2004

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN BENTON COUNTY IN TENNESSEE
  SOUTHERN HUMPHREYS COUNTY IN TENNESSEE

* UNTIL 800 PM CDT

* AT 451 PM CDT...VERY HEAVY RAIN CONTINUED OVER BENTON AND HUMPHREYS
  COUNTIES WITH RADAR ESTIMATES OF AS MUCH AS 3 INCHES OF RAINFALL IN
  ONE HOUR. HARDEST HIT AREAS ARE IN SOUTHERN BENTON COUNTY HEAR HALLADAY
  AND SOUTHERN HUMPHREYS COUNTY JUST SOUTH OF BAKERVILLE.

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 3598 8820 3580 8817 3584 8769 3607 8762

$$

JLM

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Sep 12, 1:00 PM CDT, 3 hours 57 minutes earlier.

Area forecast discussion, Sep 12, 1:00 PM CDT, 3 hours 57 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
100 PM CDT SUN SEP 12 2004

.DISCUSSION...
SCATTERED CONVECTION ON-GOING IN MIDDLE TENNESSEE FROM CENTERVILLE
TO NASHVILLE AND ALONG THE KY/TN BORDER NORTHWEST OF NASHVILLE.

CLOSE SURFACE ANALYSIS SHOWS A WEAK INVERTED TROF EXTENDING FROM
LOUISIANA AND GULF AREA NORTHWARD THROUGH WESTERN MISSISSIPPI...WEST
TENNESSEE ALONG TENNESSEE RIVER...WESTERN KENTUCKY INTO CENTRAL
INDIANA. THIS FEATURE IN ASSOCIATION WITH UPPER TROF HUNG UP ALONG
LOWER MISSISSIPPI RIVER VALLEY. MODELS CLOSE LOW OFF OVER WEST TN
TONIGHT AND THEN WORK IT SLOWLY NORTHEAST NEXT COUPLE OF DAYS. MOS
GUIDANCE NOT HANDLING POPS VERY WELL.

WILL KEEP POPS IN FORECAST THROUGH TUESDAY AS UPPER TROUGH WILL
INFLUENCE MID STATES WEATHER FIRST PART OF WORK WEEK. MID STATES
WEATHER AFTER TUESDAY WILL LIKELY HINGE ON THE EVENTUAL TRACK OF
IVAN.

&&

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

&&

BOYD
01

Hazardous weather outlook, Sep 12, 5:30 AM CDT, 11 hours 27 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CDT SUN SEP 12 2004

TNZ005>011-022>034-056>066-075-077>080-093>095-131000-
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 SEP 12 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT
ISOLATED TO SCATTERED THUNDERSTORMS POSSIBLE THIS AFTERNOON AND
TONIGHT. WIDESPREAD HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
THE PRESENT TPC FORECAST HAS THE REMNANTS OF HURRICANE IVAN PASSING
TO THE EAST OF MIDDLE TENNESSEE THURSDAY NIGHT. FLOODING COULD BECOME
A PROBLEM IN THE EASTERN ZONES OF THE MID STATE. WIDESPREAD
HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGERS MAYBE NEEDED
THURSDAY IF THE REMNANTS OF IVAN PASSES OUR WAY.

31

31

In the hours before

Local storm report, Sep 12, 2:22 PM CDT, 2 hours 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
222 PM CDT SUN SEP 12 2004

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

0150 PM     HAIL             MCEWEN                  36.11N 87.64W
09/12/2004  1.00 INCH        HUMPHREYS          TN   LAW ENFORCEMENT

            SHERIFFS OFFICE REPORTED LARGE HAIL TO QUARTER SIZE AT
            MCEWEN BETWEEN 150 PM AND 210 PM.

&&

DRM

Local storm report, Sep 12, 3:28 PM CDT, 1 hour 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
328 PM CDT SUN SEP 12 2004

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

0310 PM     HAIL             BIG SANDY               36.23N 88.09W
09/12/2004  1.75 INCH        BENTON             TN   LAW ENFORCEMENT

            SHERIFFS OFFICE REPORTED GOLFBALL SIZE HAIL AT BIG SANDY.

&&

DRM

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 12, 1:51 PM CDT	Severe Thunderstorm Warning	OHX	Humphreys	54 min
Sep 12, 2:46 PM CDT	Severe Thunderstorm Warning	OHX	Humphreys	59 min
Sep 12, 2:57 PM CDT	Severe Thunderstorm Warning	OHX	Benton	48 min
Sep 12, 3:00 PM CDT	Severe Thunderstorm Warning	OHX	Benton	45 min
Sep 12, 3:44 PM CDT	Severe Thunderstorm Warning	OHX	Benton	61 min
Sep 12, 4:13 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Humphreys	32 min
Sep 12, 4:43 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Perry	32 min
Sep 12, 5:16 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Perry	29 min
Sep 12, 5:43 PM CDT	Severe Thunderstorm Warning	OHX	Lewis, Perry, Wayne	32 min
Sep 12, 5:47 PM CDT	Flash Flood Warning	OHX	Perry	3 hr
Sep 12, 6:16 PM CDT	Severe Thunderstorm Warning	OHX	Perry, Wayne	29 min
Sep 12, 6:24 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	21 min
Sep 12, 6:56 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	34 min

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.