Alert archive / Tennessee / Flash Flood Warnings in 1991

Flash Flood Warning 7, NWS Nashville, TN

May 25, 1991Lawrence County, Lewis County, Tennessee

NWS Nashville, TN issued this flash flood warning at May 25, 1991, 9:10 PM CDT for Lawrence County, Lewis County, Tennessee. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: May 25, 1991, 9:10 PM CDT (02:10 UTC)
Expired: May 26, 1991, 1:15 AM CDT
In force: 4 hr
Issued by: NWS Nashville, TN
Area: Whole counties

Counties Lawrence County, TN, Lewis County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.2 hours before the alert went out and 114 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: 376 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 837 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 59 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 
TTAA00 KBNA 260213
FFWBNA
TNC081-099-101-260615-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
910 PM CDT SAT MAY 25 1991
 
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  115 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN MIDDLE TENNESSEE
 
   ...HICKMAN COUNTY...LAWRENCE COUNTY...LEWIS COUNTY
 
RADAR INDICATED HEAVY RAINS HAVE FALLEN OVER PORTIONS OF THE
WARNED COUNTIES. PUBLIC REPORTS FROM TWO TO FOUR INCHES OF RAIN
HAVE FALLEN OVER PORTIONS OF LAWRENCE COUNTY RESULTING IN SMALL
STREAM AND ROAD FLOODING.
THUNDERSTORMS WITH HEAVY RAIN ARE FORECAST TO CONTINUE TO FALL OVER
THE AREA AND WITH THE GROUND SATURATED AND STREAMS NEAR BANKFULL
ADDITIONAL FLOODING IS EXPECTED.
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
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 SHOUcLD 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, May 25, 7:43 PM CDT, 1 hour 27 minutes before

TNZ006-007-008-009-010-011-260145-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE TN
741 PM CDT SAT MAY 25 1991

AT 730 PM CDT...SCATTERED THUNDERSTORMS AND SHOWERS...SEVERAL WITH
HEAVY RAIN...CONTINUED OVER THE WESTERN PORTION OF MIDDLE TENNESSEE
BETWEEN DICKSON...HOHENWALD...LAWRENCEBURG AND LORETTO...AND...
IN NORTHWEST ALABAMA FROM MUSCLE SHOALS TO ATHENS AND DECATUR.

THESE THUNDERSTORMS WITH HEAVY RAIN MAY RESULT IN SMALL STREAM
FLOODING...STREETS AND UNDERPASSES MAY BECOME COVERED WITH WATER.
IF DRIVING...EXCERCISE CAUTION WHEN APPROACHING WATER COVERED
STREETS.

ALSO...NUMEROUS LARGE PATCHES OF LIGHT RAIN WERE OVER THE WESTERN
ONE-HALF OF MIDDLE TENNESSEE...ACROSS KENTUCKY FROM OWENSBORO TO
CENTRAL CITY AND HOPKINSVILLE...AND...OVER NORTHWEST ALABAMA.  THIS
ACTIVITY EXTENDED INTO MUCH OF WEST TENNESSEE...AND...NORTHEAST
MISSISSIPPI.

MOVEMENT WAS TO THE NORTH AT 20 MILES AN HOUR.

Special weather statement, May 25, 8:42 PM CDT, 28 minutes before

TNZ009-010-011-260245-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE TN
840 PM CDT SAT MAY 25 1991

AT 830 PM CDT...NASHVILLE WEATHER RADAR INDICATED SCATTERED
SHOWERS AND THUNDERSTORMS...SEVERAL WITH HEAVY RAIN...OVER
THE SOUTHWEST PORTION OF MIDDLE TENNESSEE FROM JUST SOUTH OF
DICKSON...NEAR LYLES...TO MOUNT PLEASANT...LAWRENCEBURG AND
PULASKI...AND...IN NORTHWEST ALABAMA BETWEEN MUSCLE SHOALS
AND HUNTSVILLE...NEAR ATHENS AND DECATUR.

THESE THUNDERSTORMS AND SHOWERS WITH HEAVY RAIN MAY RESULT IN
SMALL STREAM FLOODING.  PUBLIC REPORTS DURING THE PAST HOUR
INDICATED SMALL STREAM AND ROAD FLOODING IN LAWRENCE COUNTY.
IF DRIVING...USE EXTREME CAUTION WHEN APPROACHING WATER COVERED
STREETS AND UNDERPASSES.

ALSO...NUMEROUS LARGE PATCHES OF LIGHT RAIN AND A FEW HEAVIER
SHOWERS CONTINUED OVER MOST OF THE WESTERN HALF OF MIDDLE
TENNESSEE...PORTIONS OF SOUTH CENTRAL KENTUCKY FROM JUST EAST
OF OWENSBO3RO...TO BEAVER DAM AND HARTFORD...TO RUSSELLVILLE..
AND...OVER MUCH OF NORTH ALABAMA FROM MUSCLE SHOALS TO HUNTSVILLE.

MOVEMENT WAS TO THE NORTH AT 20 MILES AN HOUR.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 9:10 PM CDT	Flash Flood Warning	OHX	Hickman	4 hr

Nearby

Flash Flood Warnings in Tennessee, 1991 Every flash flood warning in 1991

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.