Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 82, NWS Morristown, TN

April 16, 1998Monroe County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Apr 16, 1998, 1:14 PM EDT for Monroe County, Tennessee. It was in force for 46 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
Apr 16, 1998, 1:14 PM EDT (17:14 UTC)
Expired
Apr 16, 1998, 2:00 PM EDT
In force
46 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Monroe County, TN

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 16, 8:00 AM EDTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.2 hours before the alert went out and 225 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 1998-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 76 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 1998-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
76 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

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 Apr 16, 10:18 AM EDT, 2 hours 56 minutes earlier.

Area forecast discussion, Apr 16, 10:18 AM EDT, 2 hours 56 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
1020 PM EDT THU APR 16 1998

BUSY MORNING WITH SEVERE CONVECTION MOVING IN FROM MIDDLE TN AND NEW STUFF
FORMING OVER CWA.  MODIFIED BNA SOUNDING LOOKS LIKE MORE OF A TORNADO
SOUNDING AS CELLS MOVE DUE EAST INCREASING HELICITY LOCALLY.  PARTS
OF LINEAR CONVECTION WILL HAVE MORE STRAIGHT LINE WIND DAMAGE.  IN
ADDITION...NEARLY SATURATED SOUNDING WITH PW OF 1.42 AT BNA WILL
RESULT IN FLOODING OF VARIOUS DEGREES AS ECHOES TRAIN.  MOST WILL BE
URBAN/SMALL STREAM FLOODING WITH ISOLATED FFW EXPECTED LATER.  DO NOT
RECOMMEND FFA ATTM...AS FLORA HAS THICKENED CONSIDERABLY AND BLV FLOODING
WILL BE MORE SPOTTY THAN WIDESPREAD TODAY.  TONIGHT MAY BE ANOTHER STORY
AS SEVERE CONVECTION WEAKENS AND TEMP/DP SPREADS NARROW.

AGREE WITH TEMPS AND POPS IN ZONES...WE MAY BE A LITTLE COOLER THAN
FORCAST IN NORTHERN ZONES AS CLOUDS KEEP SUN OUT...BUT DONT BELV AN
UPDATE IS IN ORDER.v

GOTTA RUN.

BB

In the hours before

Local storm report, Apr 16, 11:29 AM EDT, 1 hour 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
1129 AM EDT THU APR 16 1998

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1031 AM                              TN   TORNADO
04/16/98   MORGAN                         MORGAN CO. DISPATCH REPORTED
                                          THAT SEVERAL CITIZENS
                                          WITNESSED A TORNADO BETWEEN
                                          GRIMSLEY AND DEERLODGE.

1050 AM    NORTHERN MORGAN           TN   WIND DAMAGE
04/16/98   MORGAN                         TEMA REPORTED LARGE TREE
                                           LIMBS DOWN AND NUMEROUS
                                          POWER OUTAGES IN NORTHERN
                                          MORGAN CO.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 10:02 AM EDTTornado WarningMRXCumberland, Fentress, Morgan63 min
Apr 16, 10:30 AM EDTTornado WarningMRXAnderson, Scott65 min
Apr 16, 10:33 AM EDTFlash Flood WarningMRXClaiborne, Grainger, Hancock4 hr
Apr 16, 10:33 AM EDTFlash Flood WarningMRXCumberland, Fentress, Morgan, Scott4 hr
Apr 16, 10:33 AM EDTFlash Flood WarningMRXAnderson, Campbell, Union4 hr
Apr 16, 12:27 PM EDTSevere Thunderstorm WarningMRXRhea33 min
Apr 16, 4:13 PM EDTSevere Thunderstorm WarningMRXClaiborne47 min
Apr 16, 4:34 PM EDTSevere Thunderstorm WarningMRXHancock46 min
Apr 16, 4:39 PM EDTSevere Thunderstorm WarningMRXHamilton61 min
Apr 16, 5:17 PM EDTSevere Thunderstorm WarningMRXBradley, McMinn, Meigs63 min
Apr 16, 5:17 PM EDTSevere Thunderstorm WarningMRXRhea63 min
Apr 16, 5:22 PM EDTTornado WarningMRXMeigs, Rhea33 min
Apr 16, 5:24 PM EDTSevere Thunderstorm WarningMRXSullivan46 min
Apr 16, 5:36 PM EDTSevere Thunderstorm WarningMRXLoudon, Roane64 min
Apr 16, 5:39 PM EDTSevere Thunderstorm WarningMRXMcMinn, Polk61 min
Apr 16, 5:47 PM EDTTornado WarningMRXPolk63 min
Apr 16, 6:00 PM EDTSevere Thunderstorm WarningMRXAnderson, Knox65 min
Apr 16, 6:00 PM EDTTornado WarningMRXMonroe45 min
Apr 16, 6:19 PM EDTSevere Thunderstorm WarningMRXCumberland1 min
Apr 16, 6:23 PM EDTSevere Thunderstorm WarningMRXCumberland57 min
Apr 16, 6:27 PM EDTSevere Thunderstorm WarningMRXGrainger, Union58 min
Apr 16, 6:37 PM EDTSevere Thunderstorm WarningMRXFentress, Morgan63 min
Apr 16, 6:38 PM EDTTornado WarningMRXCumberland62 min
Apr 16, 6:44 PM EDTSevere Thunderstorm WarningMRXMonroe31 min
Apr 16, 6:49 PM EDTTornado WarningMRXMorgan66 min
Apr 16, 6:53 PM EDTTornado WarningMRXClaiborne67 min
Apr 16, 7:07 PM EDTTornado WarningMRXHancock48 min
Apr 16, 7:12 PM EDTTornado WarningMRXCampbell33 min
Apr 16, 7:13 PM EDTSevere Thunderstorm WarningMRXBradley, Hamilton62 min
Apr 16, 7:13 PM EDTTornado WarningMRXUnion37 min
Apr 16, 7:15 PM EDTTornado WarningMRXAnderson35 min
Apr 16, 7:21 PM EDTTornado WarningMRXGrainger34 min
Apr 16, 7:23 PM EDTTornado WarningMRXScott32 min
Apr 16, 7:45 PM EDTSevere Thunderstorm WarningMRXCampbell65 min
Apr 16, 7:48 PM EDTTornado WarningMRXAnderson, Union47 min
Apr 16, 7:53 PM EDTTornado WarningMRXGrainger47 min
Apr 16, 7:58 PM EDTTornado WarningMRXClaiborne47 min
Apr 15, 8:53 PM EDTSevere Thunderstorm WarningMRXRussell47 min
Apr 16, 10:33 AM EDTFlash Flood WarningMRXWise4 hr
Apr 16, 4:16 PM EDTSevere Thunderstorm WarningMRXLee64 min
Apr 16, 4:58 PM EDTSevere Thunderstorm WarningMRXScott47 min
Apr 16, 5:31 PM EDTSevere Thunderstorm WarningMRXWashington64 min
Apr 16, 7:25 PM EDTTornado WarningMRXLee65 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.