Alert archive / Tennessee / Tornado Warnings in 1991

Tornado Warning 1, NWS Morristown, TN

April 9, 1991Fentress County, Tennessee

NWS Morristown, TN issued this tornado warning at Apr 9, 1991, 2:42 PM CDT for Fentress County, Tennessee. It was in force for 48 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 9, 1991, 2:42 PM CDT (19:42 UTC)
Expired
Apr 9, 1991, 3:30 PM CDT
In force
48 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Fentress County, TN

What was reported inside it

TimeReportWhereRemark
Apr 9, 3:10 PM CDTThunderstorm Wind 0Fentress, TN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.7 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 1991-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1517 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 1991-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 178 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
1517 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
637 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
178 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.9

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
Apr 9, 2:47 PM CDTSevere Thunderstorm WarningMRXAnderson, Campbell, Union58 min
Apr 9, 3:13 PM CDTSevere Thunderstorm WarningMRXScott62 min
Apr 9, 5:09 PM CDTSevere Thunderstorm WarningMRXHawkins, Sullivan66 min
Apr 9, 5:55 PM CDTSevere Thunderstorm WarningMRXWashington35 min
Apr 9, 5:26 PM CDTSevere Thunderstorm WarningMRXRussell, Washington64 min
Apr 9, 5:26 PM CDTSevere Thunderstorm WarningMRXBuchanan64 min

Nearby

Tornado Warnings in Tennessee, 1991Every tornado warning in 1991Tornadoes in 1991

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.