Alert archive / Tennessee / Flash Flood Warnings in 1990
Flash Flood Warning 76, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Dec 22, 1990, 7:14 PM CST for Grundy County, Marion County, Sequatchie 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
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 00:00Z, 1.2 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
- 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
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 | Van Buren | 4 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.