Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 252, NWS Morristown, TN

May 26, 1998Blount County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at May 26, 1998, 4:58 PM EDT for Blount County, Tennessee. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 26, 1998, 4:58 PM EDT (20:58 UTC)
Expired
May 26, 1998, 6:05 PM EDT
In force
67 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Blount County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.0 hours before the alert went out and 246 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, Nashville Metro, TN at 12:00Z on 1998-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 366 joules per kilogram.LCLLFCEL10008507005003002001001 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, Nashville Metro, TN at 12:00Z on 1998-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.19395878Sfc1 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
366 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
952 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMRX 262058 RRA
SVRMRX
TNC009-262200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
458 PM EDT TUE MAY 26 1998

THE NATIONAL WEATHER SERVICE IN KNOXVILLE/TRI-CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BLOUNT COUNTY IN EASTERN TENNESSEE

* UNTIL 605 PM EDT

* AT 455 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES NORTH OF ALCOA... MOVING EAST AT 20
  MPH.


* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LOUISVILLE AT 5 PM EDT
  ROCKFORD AT 520 PM EDT

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 10:01 PM EDTSevere Thunderstorm WarningMRXFentress64 min
May 25, 10:15 PM EDTSevere Thunderstorm WarningMRXHancock, Hawkins60 min
May 25, 10:50 PM EDTSevere Thunderstorm WarningMRXMorgan65 min
May 25, 10:58 PM EDTSevere Thunderstorm WarningMRXSullivan62 min
May 25, 11:12 PM EDTSevere Thunderstorm WarningMRXAnderson, Campbell, Scott63 min
May 25, 11:18 PM EDTTornado WarningMRXSullivan62 min
May 25, 11:22 PM EDTSevere Thunderstorm WarningMRXClaiborne, Grainger, Hancock63 min
May 25, 11:22 PM EDTSevere Thunderstorm WarningMRXHawkins63 min
May 25, 11:39 PM EDTSevere Thunderstorm WarningMRXKnox, Union61 min
May 25, 11:48 PM EDTSevere Thunderstorm WarningMRXCarter, Johnson62 min
May 25, 11:49 PM EDTSevere Thunderstorm WarningMRXCumberland46 min
May 25, 11:53 PM EDTFlash Flood WarningMRXClaiborne3 hr
May 25, 11:53 PM EDTSevere Thunderstorm WarningMRXHamilton, Meigs, Rhea62 min
May 26, 12:23 AM EDTFlash Flood WarningMRXHancock, Hawkins3 hr
May 26, 12:32 AM EDTSevere Thunderstorm WarningMRXGreene, Washington48 min
May 26, 12:32 AM EDTSevere Thunderstorm WarningMRXSullivan48 min
May 26, 12:33 AM EDTSevere Thunderstorm WarningMRXHawkins37 min
May 26, 12:37 AM EDTSevere Thunderstorm WarningMRXHamblen48 min
May 26, 1:01 AM EDTSevere Thunderstorm WarningMRXCarter, Unicoi49 min
May 26, 1:05 AM EDTFlash Flood WarningMRXSullivan2 hr
May 26, 1:21 AM EDTSevere Thunderstorm WarningMRXMonroe49 min
May 26, 3:57 PM EDTSevere Thunderstorm WarningMRXRoane63 min
May 26, 4:14 PM EDTSevere Thunderstorm WarningMRXCampbell46 min
May 26, 4:24 PM EDTSevere Thunderstorm WarningMRXLoudon46 min
May 26, 4:30 PM EDTSevere Thunderstorm WarningMRXUnion50 min
May 26, 4:36 PM EDTSevere Thunderstorm WarningMRXKnox64 min
May 26, 5:11 PM EDTSevere Thunderstorm WarningMRXClaiborne, Grainger59 min
May 26, 5:34 PM EDTSevere Thunderstorm WarningMRXHancock31 min
May 26, 5:41 PM EDTSevere Thunderstorm WarningMRXSevier29 min
May 26, 6:01 PM EDTSevere Thunderstorm WarningMRXJefferson49 min
May 26, 6:25 PM EDTSevere Thunderstorm WarningMRXCocke65 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1998Every severe thunderstorm warning in 1998

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.