Alert archive / Tennessee / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 217, NWS Morristown, TN

September 7, 1996Fentress County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Sep 7, 1996, 2:23 PM CDT for Fentress County, Tennessee. It was in force for 37 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
Sep 7, 1996, 2:23 PM CDT (19:23 UTC)
Expired
Sep 7, 1996, 3:00 PM CDT
In force
37 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Fentress County, TN

The radar

The Knoxville radar (KMRX), 139 km from the middle of the area, began a volume at 19:23 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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 1996-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1146 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 1996-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939Sfc1 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
1146 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
857 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
26 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 Sep 7, 8:39 AM CDT, 5 hours 44 minutes earlier.

Area forecast discussion, Sep 7, 8:39 AM CDT, 5 hours 44 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
940 AM EDT SAT SEP 7 1996

WV IMAGERY CLEARLY SHOWS THE UPR TROUGH MOVING ACROSS THE MS RVR WITH
A TRAILING VORT MAX IN SW TN.  TH\ESE FEATURES ALONG WITH AFTN HEATING
WL BE ENOUGH TO GENERATE SCTD STORMS THIS AFTN AND EARLY EVENING.
CURRENT FCST HAS THIS COVERED WELL SO NO CHANGES NEEDED THERE. ALSO
TEMPS AND WINDS LOOK ON TRACK.  MB

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 1:41 PM CDTSevere Thunderstorm WarningMRXBradley34 min
Sep 7, 2:15 PM CDTFlash Flood WarningMRXBradley3 hr
Sep 7, 2:27 PM CDTFlash Flood WarningMRXHamilton3 hr
Sep 7, 2:35 PM CDTSevere Thunderstorm WarningMRXCumberland, Morgan40 min
Sep 7, 4:43 PM CDTFlash Flood WarningMRXSevier3 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 1996Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.