Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 342, NWS Morristown, TN

June 14, 1998Meigs County, Rhea County, Roane County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 14, 1998, 1:44 PM EDT for Meigs County, Rhea County, Roane County, Tennessee. It was in force for 61 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 14, 1998, 1:44 PM EDT (17:44 UTC)
Expired
Jun 14, 1998, 2:45 PM EDT
In force
61 min
Issued by
NWS Morristown, TN
Area
Whole counties

Counties Meigs County, TN, Rhea County, TN, Roane County, TN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 14, 11:30 AM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.7 hours before the alert went out and 174 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 1998-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 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 1998-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 254 square meters per square second.1939587897Sfc1 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
6 J/kg
Mixed-layer CIN
-256 J/kg
Mixed-layer LCL
813 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
254 m²/s²
0-3 km storm-relative helicity
350 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 14, 1:40 PM EDT, 4 minutes earlier.

Area forecast discussion, Jun 14, 1:40 PM EDT, 4 minutes before
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In the hours before

Special weather statement, Jun 14, 11:01 AM EDT, 2 hours 43 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005-
006-008-142300-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
1101 AM EDT SUN JUN 14 1998

...A RISK OF SEVERE THUNDERSTORMS EXISTS THIS AFTERNOON AND
EVENING FOR SOUTHWEST VIRGINIA...CUMBERLAND PLATEAU...EAST TENNESSEE
AND EXTREME SOUTHWEST NORTH CAROLINA...

LATE THIS MORNING...A WARM FRONT WAS LOCATED FROM WESTERN TENNESSEE
TO NORTHERN ALABAMA TO CENTRAL GEORGIA.  THIS FRONT WILL CONTINUE TO
LIFT NORTHEAST TOWARD THE REGION TODAY AND BE LOCATED ACROSS SOUTHEAST
TENNESSEE BY EARLY THIS EVENING THEN MOVE NORTH OF THE AREA OVERNIGHT.

INCREASING SOUTHERLY WINDS ALONG AND SOUTH OF THE WARM FRONT WILL
ALLOW INCREASING WARM...MOIST AND UNSTABLE AIR TO MOVE INTO THE REGION.
AT THE SAME TIME...AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE
TENNESSEE VALLEY COMBINING FORCES WITH THE APPROACHING WARM FRONT
TO PRODUCE SCATTERED THUNDERSTORMS OVER REGION THIS AFTERNOON AND EVENING.

DUE TO THE FAVORABLE WINDS ALOFT...SOME OF THESE STORMS MAY BECOME SEVERE
THIS AFTERNOON AND EVENING.  THE MAIN THREAT WILL BE DAMAGING STRAIGHT
LINE WINDS AND LARGE HAIL...BUT ISOLATED TORNADOES ARE POSSIBLE...
GENERALLY ALONG AND SOUTH OF INTERSTATE 40.  THE INCREASING MOISTURE OVER
THE AREA WILL ALSO PRODUCE A THREAT FOR LOCALLIZED FLASH FLOODING.
FLOODING OF LOW LYING AREAS...STREET FLOODING...AND RAPID STREAM RISE
ARE POSSIBLE.

REMEMBER...A SEVERE THUNDERSTORM IS DEFINED AS ANY STORM PRODUCING
3/4 INCH HAIL (DIME-SIZE) OR LARGER...AND/OR WINDS OF 58 MPH OR
HIGHER.

STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS MAY NEED TO
BE ACTIVATED THIS AFTERNOON AND EVENING.  RESIDENTS ACROSS THE AREA
SHOULD CONTINUE TO MONITOR THE LATEST FORECAST AND LISTEN FOR LATER
WEATHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE.

DH
Special weather statement, Jun 14, 11:01 AM EDT, 2 hours 43 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005-
006-008-142300-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
1101 AM EDT SUN JUN 14 1998

...A RISK OF SEVERE THUNDERSTORMS EXISTS THIS AFTERNOON AND
EVENING FOR SOUTHWEST VIRGINIA...CUMBERLAND PLATEAU...EAST TENNESSEE
AND EXTREME SOUTHWEST NORTH CAROLINA...

LATE THIS MORNING...A WARM FRONT WAS LOCATED FROM WESTERN TENNESSEE
TO NORTHERN ALABAMA TO CENTRAL GEORGIA.  THIS FRONT WILL CONTINUE TO
LIFT NORTHEAST TOWARD THE REGION TODAY AND BE LOCATED ACROSS SOUTHEAST
TENNESSEE BY EARLY THIS EVENING THEN MOVE NORTH OF THE AREA OVERNIGHT.

INCREASING SOUTHERLY WINDS ALONG AND SOUTH OF THE WARM FRONT WILL
ALLOW INCREASING WARM...MOIST AND UNSTABLE AIR TO MOVE INTO THE REGION.
AT THE SAME TIME...AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE
TENNESSEE VALLEY COMBINING FORCES WITH THE APPROACHING WARM FRONT
TO PRODUCE SCATTERED THUNDERSTORMS OVER REGION THIS AFTERNOON AND EVENING.

DUE TO THE FAVORABLE WINDS ALOFT...SOME OF THESE STORMS MAY BECOME SEVERE
THIS AFTERNOON AND EVENING.  THE MAIN THREAT WILL BE DAMAGING STRAIGHT
LINE WINDS AND LARGE HAIL...BUT ISOLATED TORNADOES ARE POSSIBLE...
GENERALLY ALONG AND SOUTH OF INTERSTATE 40.  THE INCREASING MOISTURE OVER
THE AREA WILL ALSO PRODUCE A THREAT FOR LOCALLIZED FLASH FLOODING.
FLOODING OF LOW LYING AREAS...STREET FLOODING...AND RAPID STREAM RISE
ARE POSSIBLE.

REMEMBER...A SEVERE THUNDERSTORM IS DEFINED AS ANY STORM PRODUCING
3/4 INCH HAIL (DIME-SIZE) OR LARGER...AND/OR WINDS OF 58 MPH OR
HIGHER.

STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS MAY NEED TO
BE ACTIVATED THIS AFTERNOON AND EVENING.  RESIDENTS ACROSS THE AREA
SHOULD CONTINUE TO MONITOR THE LATEST FORECAST AND LISTEN FOR LATER
WEATHER UPDATES FROM YOUR NATIONAL WEATHER SERVICE.

DH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 12:39 PM EDTSevere Thunderstorm WarningMRXFentress61 min
Jun 14, 12:58 PM EDTSevere Thunderstorm WarningMRXCumberland, Morgan62 min
Jun 14, 1:34 PM EDTSevere Thunderstorm WarningMRXScott51 min
Jun 14, 1:44 PM EDTSevere Thunderstorm WarningMRXAnderson61 min
Jun 14, 5:50 PM EDTSevere Thunderstorm WarningMRXBradley, Polk45 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.