Alert archive / Tennessee / Flash Flood Warnings in 1994

Flash Flood Warning 16, NWS Nashville, TN

April 15, 1994Wilson County, Tennessee

NWS Nashville, TN issued this flash flood warning at Apr 15, 1994, 1:01 PM CDT for Wilson County, Tennessee. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Apr 15, 1994, 1:01 PM CDT (18:01 UTC)
Expired: Apr 15, 1994, 4:00 PM CDT
In force: 3 hr
Issued by: NWS Nashville, TN
Area: Whole counties

County Wilson County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.0 hours before the alert went out and 27 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: 1649 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 684 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 295 m²/s²
0-3 km storm-relative helicity: 304 m²/s²
Significant tornado parameter: 2.7
Supercell composite: 13.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBNA 151803
FFWBNA
TNC037-187-189-152100-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
101 PM CDT FRI APR 15 1994
 
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  400 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN MIDDLE TENNESSEE
 
   ...DAVIDSON COUNTY...WILLIAMSON COUNTY...WILSON COUNTY
 
...TORNADO WATCH REMAINS IN EFFECT UNTIL 3 PM CDT...
 
...WATER COVER ROADWAYS ACROSS DAVIDSON...WILLIAMSON AND WILSON
COUNTIES...
 
LARGE AMOUNTS OF RAIN HAS FALLEN ACROSS DAVIDSON...WILLIAMSON AND
WILSON DURING THE LAST COUPLE OF HOURS WITH CREEKS AND STREAMS
RUNNING BANKFULL.
 
RICHLAND CREEK IS FLOODING IN DAVIDSON COUNTY WITH SEVERAL REPORTS
OF WATER COVERING ROADWAYS AND DITCHES OVERFLOWING IN DAVIDSON..
WILLIAMSON AND WILSON COUNTIES.
 
THE RAIN AND THUNDERSTORMS ARE LIKELY TO CONTINUE FOR THE NEXT
FEW OF HOURS IN THESE COUNTIES.
 
DO NOT DRIVE YO6UR 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.
 
 
 
&

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.

In the hours before

Special weather statement, Apr 15, 9:56 AM CDT, 3 hours 5 minutes before

TNZ005>010-023>033-056>065-075>078-093>097-151555-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE  TN
950 AM CDT FRI APR 15 1994

...TORNADO WATCH IN EFFECT FOR THE NORTHWEST CORNER OF MIDDLE
TENNESSEE UNTIL NOON AND FOR THE REMAINDER OF MIDDLE TENNESSEE
UNTIL 3 PM CDT...

A LINE OF STRONG THUNDERSTORMS ENTERING THE NORTHWEST CORNER
OF MIDDLE TENNESSEE AT 930 AM CDT.  THE STRONG THUNDERSTORMS
WERE JUST NORTH OF ELKTON IN TODD COUNTY KENTUCKY.

THE LINE OF STRONG THUNDERSTORMS WAS MOVING SOUTHEAST AND WILL
ENTER NORTHWEST MIDDLE TENNESSEE WITHIN THE HOUR.

NUMEROUS THUNDERSTORMS WERE OCCURRING IN EASTERN MIDDLE TENNESSEE
FROM WOODBURY TO SPARTA AND SOUTHEAST TOWARD CHATTANOOGA.

THE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR.

THE ATMOSPHERE OVER MIDDLE TENNESSEE REMAINS MOIST AND UNSTABLE
WITH LOW LEVEL WIND SHEAR THAT IS CONDUCIVE FOR SEVERE WEATHER.

IF YOU LIVE IN MIDDLE TENNESSEE KEY A WEATHER EYE ON THE SKY.

AT SIGNS OF AN IMPENDING STORM...TOWERING THUNDERHEADS...DARKENING
SKIES...LIGHTNING AND INCREASING WINDS...MOVE TO A PLACE OF SAFETY.
TUNE IN NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TV STATION FOR
THE LATEST WEAT0HER INFORMATION.

Special weather statement, Apr 15, 10:56 AM CDT, 2 hours 5 minutes before

TNZ005>010-023>033-056>065-075>078-093>097-151700-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE  TN
1055 AM CDT FRI APR 15 1994

...TORNADO WATCH IN EFFECT FOR ALL OF MIDDLE TENNESSEE UNTIL 3 PM CDT...

A LINE OF STRONG THUNDERSTORMS...SOME PRODUCING GUSTY WINDS AND
SMALL HAIL WAS MOVING SOUTHEAST AT 30 MILES AN HOUR WITH THE
LEADING EDGE EXTENDING FROM 25 MILES SOUTHEAST OF BOWLING GREEN
KENTUCKY TO JUST NORTH OF NASHVILLE TO 25 MILES SOUTHEAST OF
JACKSON IN WEST TENNESSEE.

REPORTS OF SMALL HAIL WERE RECEIVED FROM THE CLARKSVILLE AREA
DURING THE LAST HALF HOUR.

THE ENVIRONMENT OVER MIDDLE TENNESSEE REMAINS MOIST AND UNSTABLE
WITH THE LOW LEVEL WIND FIELD FAVORABLE FOR ENHANCEMENT OF
SEVERE THUNDERSTORMS AND DEVELOPEMENT OF TORNADOES.

PEOPLE IN MIDDLE TENNESSEE SHOULD KEEP A WEATHER EYE ON THE SKY.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS( SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 11:24 AM CDT	Tornado Warning	OHX	Macon	36 min
Apr 15, 11:39 AM CDT	Severe Thunderstorm Warning	OHX	Hickman, Maury, Williamson	66 min
Apr 15, 12:17 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Wilson	58 min
Apr 15, 12:46 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Maury, Williamson	59 min
Apr 15, 1:01 PM CDT	Flash Flood Warning	OHX	Davidson, Williamson	3 hr
Apr 15, 1:37 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford	68 min
Apr 15, 3:45 PM CDT	Severe Thunderstorm Warning	OHX	Williamson	60 min

Nearby

Flash Flood Warnings in Tennessee, 1994 Every flash flood warning in 1994

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.