Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 317, NWS Morristown, TN

June 5, 1998Greene County, Hamblen County, Hawkins County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 5, 1998, 9:14 PM EDT for Greene County, Hamblen County, Hawkins 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
Jun 5, 1998, 9:14 PM EDT (01:14 UTC)
Expired
Jun 5, 1998, 10:00 PM EDT
In force
46 min
Issued by
NWS Morristown, TN
Area
Whole counties

Counties Greene County, TN, Hamblen County, TN, Hawkins County, TN

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.2 hours before the alert went out and 281 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, Greensboro/Hi Pt, NC at 00:00Z on 1998-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 284 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, Greensboro/Hi Pt, NC at 00:00Z on 1998-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
284 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
950 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

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 5, 8:15 PM EDT, 59 minutes earlier.

Area forecast discussion, Jun 5, 8:15 PM EDT, 59 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
815 PM EDT FRI JUN 5 1998

VERY BUSY WITH TOR...SVR...FFW...ETC...SO QUICKLY...BLV FROM WHAT I
SEEN OF THE MODELS THAT THE ZONES LNOOK PRETTY GOOD FOR TN...VA...AND
NC.  THANKS FOLKS.  LIKE KEEPING MC IN FOR SATURDAY THEN GOING PC
AT NIGHT.  TEMPS LOOK GOOD.  IT'S A KEEPER.

BOYD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 5, 8:13 PM EDTSevere Thunderstorm WarningMRXWashington47 min
Jun 5, 8:44 PM EDTSevere Thunderstorm WarningMRXCampbell31 min
Jun 5, 9:24 PM EDTFlash Flood WarningMRXGreene, Hamblen, Hawkins2 hr
Jun 5, 8:32 PM EDTSevere Thunderstorm WarningMRXRussell18 min
Jun 5, 8:25 PM EDTFlash Flood WarningMRXClay3 hr

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.