Alert archive / Tennessee / Flash Flood Warnings in 1990

Flash Flood Warning 77, NWS Atlanta, GA

December 22, 1990Van Buren County, Tennessee

NWS Atlanta, GA issued this flash flood warning at Dec 22, 1990, 7:14 PM CST for Van Buren County, Tennessee. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Dec 22, 1990, 7:14 PM CST (01:14 UTC)
Expired: Dec 22, 1990, 11:15 PM CST
In force: 4 hr
Issued by: NWS Atlanta, GA
Area: Whole counties

County Van Buren County, TN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.2 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 464 m above ground
0-6 km bulk shear: 94 kt
0-1 km storm-relative helicity: 325 m²/s²
0-3 km storm-relative helicity: 347 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 KCHA 230115
FFWCHA
TNC007-061-065-115-121-143-153-175-230515-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE
814 PM EST (714 PM CST) SAT DEC 22 1990
 
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA TENNESSEE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1215 AM EST (1115 PM CST)
FOR PEOPLE IN THE FOLLOWING LOCATIONS
 
IN SOUTHEAST TENNESSEE
 
   ...BLEDSOE COUNTY...GRUNDY COUNTY...HAMILTON COUNTY...MARION COUNTY
   ...MEIGS COUNTY...RHEA COUNTY...SEQUATCHIE COUNTY...VAN BUREN COUNT 
...THIS IS A CONTINUED FLASH FLOOD WARNING FOR BLEDSOE, GRUNDY,
MARION, MEIGS, RHEA, SEQUATCHIE AND VAN BUREN COUNTIES OF SOUTHEAST
TENNESSEE...
 
...THIS IS THE FIRST WARNING FOR HAMILTON COUNTY...
 
REPORTS FROM LAW ENFORCEMENT OFFICES REPORT CONTINUED FLOODING
IN THESE COUNTIES...MANY ROADS AND SOME BRIDGES OR COVERED.
 
EVACUATIONS HAVE BEEN REPORTED IN THE CUMBERLAND PLATEAU COUNTIES.
 
THE RAINS...HEAVY AT TIMES...SHOULD CONTINUE DURING THE NIGHT AND INTO
SUNDAY MORNING AND CONDITIONS WILL LIKELY GET WORSE.  SIX TO SEVEN
INCHES OF RAIN HAVE BEEN REPORTED IN SOME OF THE CUMBERLAND PLATEAU
COUNTIES DURING THE PAST 24 HOURS.
 
IN HAMILTON COUNTY OF SOUTHEAST TENNESSEE SMALL STREAMS OR FLOODING
AND ROADWAYS COVERED IN THE MIDDLE VALLEY AREA...AROUND SALE CREEK
WITH MOST OF THE PROBLEMS BEGINNING TO CROP UP...CURRENTLY...IN THE
WESTERN SECTIONS OF THE COUNTY.
 
DO NOT DRIVE YOUR VEHICLE INTO ADREAS 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.

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 22, 7:14 PM CST	Flash Flood Warning	FFC	Bledsoe, Hamilton, Meigs, Rhea	4 hr
Dec 22, 7:14 PM CST	Flash Flood Warning	FFC	Grundy, Marion, Sequatchie	4 hr

Nearby

Flash Flood Warnings in Tennessee, 1990 Every flash flood warning in 1990

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.