Alert archive / Tennessee / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 192, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 21, 1997, 3:00 PM EDT for Blount County, Monroe County, Tennessee. It was in force for 2 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 21, 1997, 3:00 PM EDT (19:00 UTC)
- Expired
- Jun 21, 1997, 5:00 PM EDT
- In force
- 2 hr
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
Counties Blount County, TN, Monroe County, TN
The radar
The Knoxville radar (KMRX), 91 km from the middle of the area, began a volume at 19:01 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 21, 3:40 PM EDT | Thunderstorm Wind | Townsend, TN |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 7.0 hours before the alert went out and 235 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
- 1908 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 698 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 6 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 KMRX 211900 RRA SVRMRX TNC009-123-212100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE KNOXVILLE TRI CITIES TN 300 PM EDT SAT JUN 21 1997 THE NATIONAL WEATHER SERVICE IN KNOXVILLE TRI CITIES HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 500 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST TENNESSEE ...SOUTHERN BLOUNT COUNTY...EASTERN MONROE COUNTY AT 257 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM WITH VERY HEAVY RAINS OVER EASTERN MONROE COUNTY NEAR THE BORDER WITH GRAHAM COUNTY NORTH CAROLINA. THIS STORM IS DRIFTING SLOWLY NORTHWARD AND WILL MOVE INTO SOUTHERN BLOUNT COUNTY NEAR AND WEST OF TALLASEE BY 310 PM EDT. PERSONS LIVING NEAR OR ALONG SMALL STREAMS AND CREEKS OR IN FLOOD PRONE AREAS SHOULD KEEP A CLASE WATCH ON WATER LEVELS IN THEIR AREA. IF WATER LEVELS BEGIN RISING RAPIDLY...MOVE TO HIGHER GROUND. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 21, 10:25 AM EDT, 4 hours 35 minutes earlier.
Area forecast discussion, Jun 21, 10:25 AM EDT, 4 hours 35 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1015 AM EDT SAT JUN 21 1997 LINE OF THUNDERSHOWWERS MOVG ESE FROM MID TN TOWARD OUR CWA. ALTHO IT'S WEAKND SOME IN LAST COUPLE HRS...IT'S STILL HOLDING TOGETHER. DIFFICULT TO SEE FORCING FOR THIS LINE...WHICH PERHAPS WAS INITIATED BY OUTFLO BNDRY SET OFF BY DYING CONVECT THIS MORN IN AL. PREV AFD SUGGESTED LWR POPS FOR TN VLY...WUD BUMP THAT UP AT LST 10 PCT NOW... GIVEN THAT THERE IS SOME MESOSCALE ORGANIZATION FOR CONVECT. HWVR...A LITTLE LESS UNST IN EAST TN COMPARED TO MID STATE...SO XPCT CONTINUED WEAKENING. OTHRW...XPCT ANOTHER DAY LIKE YEST AS FAR AS CONVECT GOES. SPENT A LOT OF TIME LOOKING AT MOD SNDG. IT SHOWS A LITTLE LESS DRY CONDS ALFT...PROB A REFLECT OF UPR LOW (NOW IN NRN GA). WBZ A LITTLE HIER TOO. ALSO...STRONGER SW FLOW IN LWR TROP SEEMS TO BE GIVING A LITTLE FASTER MVMNT TO THE CONVECT TODAY. SO...A LITTLE SMALLER HAIL...DOWNBURST INTENSITY...AND RAINFALL AMTS SEEM TO BE IN THE OFFING. EMPHASIS IS ON "A LITTLE" HWVR. WILL HAVE TO WATCH MESOSCALE ORGAN OF APCHNG LINE TO SEE IF IT HANGS TOGETHER...IF IT DOES INTENSITY OF CONVECT CUD BE GREATER THAN YEST. UPR LO STILL HAS A zLITTLE COOL POCKET ASSOC...DESTABILIZING THE ATMOS...AND WON'T GO ANYWHERE THRU TOMORO. SMH
In the hours before
Local storm report, Jun 21, 2:41 PM EDT, 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
241 PM EDT SAT JUN 21 1997
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
200 PM RANGER NC 1.75 INCH HAIL
06/21/97 CHEROKEE GOLFBALL SIZE HAIL REPORTED
IN RANGER. REPORTED BY HAM
RADIO OPERATOR.
200 PM CULBERSON NC 1.00 INCH HAIL
06/21/97 CHEROKEE QUARTER SIZE HAIL REPORTED
ON HIGHWAY 60 OFF OF HIGHWAY
64. REPORTED BY THE
SHERIFF'S OFFICE.
210 PM REDBANK TN 0.75 INCH HAIL
06/21/97 HAMILTON DIME SIZE HAIL REPORTED IN
THE RED BANK COMMUNITY OF
CHATTANOOGA. REPORTED BY A
PARAMEDIC AND ALSO REPORTED
BY THE SHERIFF'S OFFICE.
ZThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 1:31 PM EDT | Flash Flood Warning | MRX | Polk | 59 min |
| Jun 21, 1:31 PM EDT | Severe Thunderstorm Warning | MRX | Polk | 59 min |
| Jun 21, 2:08 PM EDT | Severe Thunderstorm Warning | MRX | Hamilton | 67 min |
| Jun 21, 2:33 PM EDT | Flash Flood Warning | MRX | Hamilton | 117 min |
| Jun 21, 2:39 PM EDT | Flash Flood Warning | MRX | Morgan | 2 hr |
| Jun 21, 3:00 PM EDT | Flash Flood Warning | MRX | Blount, Monroe | 2 hr |
| Jun 21, 3:30 PM EDT | Flash Flood Warning | MRX | Sevier | 2 hr |
| Jun 21, 3:30 PM EDT | Severe Thunderstorm Warning | MRX | Sevier | 2 hr |
| Jun 21, 3:56 PM EDT | Severe Thunderstorm Warning | MRX | Meigs | 49 min |
| Jun 21, 4:41 PM EDT | Severe Thunderstorm Warning | MRX | Cocke | 64 min |
| Jun 21, 5:14 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Knox | 61 min |
| Jun 21, 5:31 PM EDT | Severe Thunderstorm Warning | MRX | Hamblen | 29 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1997Every severe thunderstorm warning in 1997
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.