Alert archive / Tennessee / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 50, NWS Morristown, TN

March 5, 1997Scott County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Mar 5, 1997, 8:54 AM EST for Scott County, Tennessee. It was in force for 66 min. 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
Mar 5, 1997, 8:54 AM EST (13:54 UTC)
Expired
Mar 5, 1997, 10:00 AM EST
In force
66 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Scott County, TN

The radar

The Knoxville radar (KMRX), 103 km from the middle of the area, began a volume at 13:57 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

TimeReportWhereRemark
Mar 5, 9:30 AM ESTHail 0.75Nw Part Of County, 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 1.9 hours before the alert went out and 339 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 1997-03-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 1997-03-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 284 square meters per square second.1939587897117136156175194Sfc1 km3 km6 km9 kmRMLM
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
848 m above ground
0-6 km bulk shear
95 kt
0-1 km storm-relative helicity
284 m²/s²
0-3 km storm-relative helicity
322 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 KMRX 051357 RRA
SVRMRX
TNC151-051500-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KNOXVILLE TRI CITIES TN
854 AM EST (754 AM CST) WED MAR 5 1997
 
THE NATIONAL WEATHER SERVICE IN KNOXVILLE TRI CITIES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 AM EST (900 AM CST)
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST TENNESSEE
 
   ...SCOTT COUNTY
 
AT 754 AM CST (854 AM EST)...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED A SEVERE THUNDERSTORM OVER EASTERN FENTRESS COUNTY. THIS
STORM WAS MOVING EAST NORTHEAST AT 55 MILES AN HOUR. STRONG DAMAGING
WINDS ARE LIKELY WITH THIS STORM AS WELL AS HAIL UP TO DIME SIZE.
RESIDENTS OF ONEIDA SHOULD BE ON THE LOOKOUT FOR THIS THUNDERSTORM.
 
 
 
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 OdR 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 Mar 5, 3:45 AM EST, 5 hours 9 minutes earlier.

Area forecast discussion, Mar 5, 3:45 AM EST, 5 hours 9 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
850 PM EST TUE MAR 4 1997

RUNNING QUITE LATE WITH AFD...SORRY ABOUT THAT BUT OUR MIGHTY
AFOS HAS BEEN MISBEHAVING THIS EVENING. HARD CRASHES ABOUT EVERY 15
MINUTES...AND MOST RECENTLY WOULD NOT EVEN STAY UP FOR 5 MINUTES.
THIS HAS LIKELY AFFECTED ANY ASOS OBS THAT USE OUR PACE SYSTEM TO
ENTER AFOS. RECENTLY REBOOTED BOTH BEP AND FEP SO WILL SEE IF THAT
HAS HELPED MATTERS AT ALL. AFOS JUST CRASHED WHILE WRITING THIS AFD
SO PERHAPS EL TECH ON THE WAY WILL HAVE THE SOLUTION.

WEATHER WISE...STILL VERY TRANQUIL AND AWAITING APCH OF NEXT SYSTEM.
CURRENTLY ONLY HAVE TWO RIVERS ABOVE FLOOD STAGE AS CLINCH RIVER
AT SPEERS FERRY (SCOTT CO VA) DROPPED BELOW FLOOD STAGE OF 18 FT JUST
AFTER OUR FLOOD STATEMENT WAS ISSUED AROUND 6PM. AGREE WITH DAY SHIFT
THAT WET GROUND...EVEN LARGE PONDS OF WATER PREVAIL...SO ANY RAINFALL
TOMORROW IS CERTAINLY UNWELCOMED AND COULD HAVE AN AFFECT ON SMALLER
CREEKS AND STREAMS. SPS FROM MEM EARLIER HAS HIGHLIGHTED THE POTENTIAL
FOR FLOODING WED SO PERHAPS WE COULD LET MIDNIGHT SHIFT WATCH SYSTEM
DEVELOP A BIT...VIEW 00Z MODEL DATA...AND THEN DECIDE IF WE ALSO NEED
A FLASH FLOOD WATCH FOR OUR TN AND NC COUNTIES.  #10

TG

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 5, 8:38 AM ESTSevere Thunderstorm WarningMRXFentress52 min
Mar 5, 9:39 AM ESTSevere Thunderstorm WarningMRXCumberland, Fentress66 min
Mar 5, 9:59 AM ESTSevere Thunderstorm WarningMRXMorgan61 min
Mar 5, 10:04 AM ESTSevere Thunderstorm WarningMRXScott56 min
Mar 5, 10:21 AM ESTSevere Thunderstorm WarningMRXCampbell69 min
Mar 5, 10:47 AM ESTSevere Thunderstorm WarningMRXClaiborne, Union58 min
Mar 5, 10:53 AM ESTTornado WarningMRXCampbell37 min
Mar 5, 11:30 AM ESTTornado WarningMRXAnderson, Campbell, Morgan, Scott60 min
Mar 5, 11:35 AM ESTSevere Thunderstorm WarningMRXHancock55 min
Mar 5, 11:41 AM ESTFlash Flood WarningMRXCumberland, Fentress, Morgan, Scott4 hr
Mar 5, 11:41 AM ESTFlash Flood WarningMRXClaiborne, Hancock4 hr
Mar 5, 11:41 AM ESTFlash Flood WarningMRXAnderson, Campbell, Union4 hr
Mar 5, 11:59 AM ESTFlash Flood WarningMRXClaiborne, Union46 min
Mar 5, 11:59 AM ESTSevere Thunderstorm WarningMRXClaiborne, Union46 min
Mar 5, 12:49 PM ESTFlash Flood WarningMRXGrainger, Hawkins4 hr
Mar 5, 2:10 PM ESTSevere Thunderstorm WarningMRXRhea, Roane35 min
Mar 5, 2:36 PM ESTSevere Thunderstorm WarningMRXKnox, Loudon39 min
Mar 5, 2:54 PM ESTSevere Thunderstorm WarningMRXBlount, Sevier36 min
Mar 5, 3:29 PM ESTSevere Thunderstorm WarningMRXCocke, Greene61 min
Mar 5, 4:09 PM ESTSevere Thunderstorm WarningMRXCarter51 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.