Alert archive / Tennessee / Flash Flood Warnings in 1990
Flash Flood Warning 72, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Dec 22, 1990, 1:37 PM CST for Grundy County, Marion County, Sequatchie County, Tennessee. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Dec 22, 1990, 1:37 PM CST (19:37 UTC)
- Expired
- Dec 22, 1990, 6:45 PM CST
- In force
- 5 hr
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Grundy County, TN, Marion County, TN, Sequatchie 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 12:00Z, 7.6 hours before the alert went out and 130 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.
- Mixed-layer CAPE
- 35 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 553 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 182 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHA 221941 FFWCHA TNC007-061-115-121-143-153-175-230045- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHATTANOOGA TENNESSEE 237 PM EST (137 PM CST) SAT DEC 22 1990 THE NATIONAL WEATHER SERVICE IN CHATTANOOGA TENNESSEE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 745 PM EST (645 PM CST) FOR PEOPLE IN THE FOLLOWING LOCATIONS IN SOUTHEAST TENNESSEE ...BLEDSOE COUNTY...GRUNDY COUNTY...MARION COUNTY...MEIGS COUNTY ...RHEA COUNTY...SEQUATCHIE COUNTY...VAN BUREN COUNTY ...THIS IS A REISSUANCE OF THE WARNINGS FOR MOST OF THESE COUNTIES... ...THIS IS THE FIRST WARNING FOR MEIGS COUNTY... REPORTS FROM AROUND THE AREA CONTINUE TO INDICATE FLOODING IN THESE COUNTIES. MANY ROADS ARE CLOSED BECAUSE OF WATER AND MUDSLIDES ACROSS THEM...ESPECIALLY SECONDARY ROADS. CREEKS AND STREAMS CONTINUE TO RISE AS THE RAIN CONTINUES TO FALL. INDICATIONS ARE THAT THE RAIN WILL CONTINUE OFF AND ON INTO THE NIGHT MAKING FLOOD CONDITIONS EVEN WORSE. IF YOU NEED TO TRAVEL INTO THESE COUNTIES THIS AFTERNOON AND EVENING BE ESPECIALLY ALERT FOR BLOCKED ROADWAYS AND MUD OR ROCK SLIDES...THIS IS A VERY SERIOUS FLOODING SITUATION IN SOME OF THESE MOUNTAINOUS COUNTIES. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP 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, 9:27 AM CST | Flash Flood Warning | FFC | Rhea | 4 hr |
| Dec 22, 10:30 AM CST | Flash Flood Warning | FFC | Bledsoe, Sequatchie, Van Buren | 4 hr |
| Dec 22, 10:30 AM CST | Flash Flood Warning | FFC | Grundy | 4 hr |
| Dec 22, 1:37 PM CST | Flash Flood Warning | FFC | Meigs, Rhea | 5 hr |
| Dec 22, 1:37 PM CST | Flash Flood Warning | FFC | Bledsoe, Van Buren | 5 hr |
Nearby
Flash Flood Warnings in Tennessee, 1990Every 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.