Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 413, NWS Morristown, TN

June 30, 1998Fentress County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 30, 1998, 2:26 PM CDT for Fentress County, Tennessee. It was in force for 34 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
Jun 30, 1998, 2:26 PM CDT (19:26 UTC)
Expired
Jun 30, 1998, 3:00 PM CDT
In force
34 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Fentress County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.4 hours before the alert went out and 152 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 1998-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 14 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 1998-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.193958Sfc1 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
14 J/kg
Mixed-layer CIN
-443 J/kg
Mixed-layer LCL
1330 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
75 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 301928 RRA
SVRMRX
TNC049-302000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
326 PM EDT (226 PM CDT) TUE JUN 30 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  FENTRESS COUNTY IN EASTERN TENNESSEE

* UNTIL 300 PM CDT (400 PM EDT)

* AT 327 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES NORTH OF WILDER... MOVING SOUTHEAST AT
  40 MPH.

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

GH/HSA

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 30, 2:00 PM CDT, 26 minutes earlier.

Area forecast discussion, Jun 30, 2:00 PM CDT, 26 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
3 PM EDT TUE JUN 30 1998

NARROW BAND OF TSTMS MOVG THRU PART OF CWA ASSOC W/SFC TROF. SFC FRNT
ATTM XTNDS FM CNTRL PA INTO SRN IL. AM XPCTG ANTHR NARROW BAND OF
TSTMS THIS EVE AS FRONT DROPS INTO CWA. STILL THINK SOME OF THESE WL
BE STRONG TO SVR. CWA UNDER RRQ OF 90-100 KT JET W/GOOD UPPER DIVERG.
SFC LIFTING PROVIDED BY FRNT..PLENTY OF MOISTURE TO FUEL CONVECTION.
WOULD KEEP POPS IN THE 40-50 PCT RANGE.

FRNT KEEPS MOVG S THRU CWA OVRNGT AND SHLD BE TO OUR S BY 12Z WED.
SLGTLY COOLER & DRIER AIR XPCTD FOR WED THRU THURS AS SFC HIGH BUILDS
SE FROM THE CNTRL & NRN PLAINS. STILL SOME GOOD VORT ENERGY SWINGING
THRU UPPER TROF. HWVR..LTL MOISTURE TO WORK WITH AND SUBIDENCE
PROVIDED BY SFC HIGH WL KEEP A LID ON ANY SHWR OR TSTM DVLPMT.

FWC/FAN TEMPS IN GOOD AGREEMENT & LOOK OK.

HSA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 11:20 PM CDTSevere Thunderstorm WarningMRXClaiborne65 min
Jun 30, 5:31 AM CDTSevere Thunderstorm WarningMRXMeigs, Rhea49 min
Jun 30, 1:37 PM CDTSevere Thunderstorm WarningMRXClaiborne33 min
Jun 30, 2:30 PM CDTSevere Thunderstorm WarningMRXGreene50 min
Jun 30, 2:41 PM CDTSevere Thunderstorm WarningMRXMorgan34 min
Jun 30, 2:58 PM CDTSevere Thunderstorm WarningMRXCocke32 min
Jun 30, 3:13 PM CDTSevere Thunderstorm WarningMRXAnderson47 min
Jun 30, 3:40 PM CDTSevere Thunderstorm WarningMRXHamilton45 min
Jun 30, 3:52 PM CDTSevere Thunderstorm WarningMRXKnox33 min
Jun 30, 3:57 PM CDTSevere Thunderstorm WarningMRXGrainger33 min
Jun 30, 4:55 PM CDTSevere Thunderstorm WarningMRXCocke35 min
Jun 30, 5:02 PM CDTSevere Thunderstorm WarningMRXCarter, Johnson, Sullivan33 min
Jun 30, 6:47 PM CDTSevere Thunderstorm WarningMRXCocke33 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.