Alert archive / Tennessee / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 191, NWS Morristown, TN

August 23, 1999Rhea County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Aug 23, 1999, 3:55 PM EDT for Rhea County, Tennessee. It was in force for 50 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
Aug 23, 1999, 3:55 PM EDT (19:55 UTC)
Expired
Aug 23, 1999, 4:45 PM EDT
In force
50 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Rhea County, TN

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.9 hours before the alert went out and 252 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 438 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
438 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
1169 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
-41 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 3:14 PM EDTSevere Thunderstorm WarningMRXBradley36 min
Aug 23, 3:26 PM EDTSevere Thunderstorm WarningMRXBledsoe49 min
Aug 23, 5:01 PM EDTSevere Thunderstorm WarningMRXBlount34 min
Aug 23, 5:16 PM EDTSevere Thunderstorm WarningMRXSevier49 min
Aug 23, 5:39 PM EDTSevere Thunderstorm WarningMRXKnox46 min
Aug 23, 5:54 PM EDTSevere Thunderstorm WarningMRXGrainger, Jefferson46 min
Aug 23, 6:14 PM EDTSevere Thunderstorm WarningMRXUnion31 min
Aug 23, 6:40 PM EDTSevere Thunderstorm WarningMRXHamblen, Hawkins45 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1999Every severe thunderstorm warning in 1999

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.