Alert archive / Tennessee / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 8, NWS Morristown, TN

March 15, 1996Monroe County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Mar 15, 1996, 11:21 AM EST for Monroe County, Tennessee. It was in force for 54 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
Mar 15, 1996, 11:21 AM EST (16:21 UTC)
Expired
Mar 15, 1996, 12:15 PM EST
In force
54 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Monroe County, TN

The radar

The Knoxville radar (KMRX), 111 km from the middle of the area, began a volume at 16:24 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.

What was reported inside it

TimeReportWhereRemark
Mar 15, 11:30 AM ESTThunderstorm WindTellico Plains, 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.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.4 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 1996-03-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 613 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 1996-03-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 239 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
613 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
652 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
239 m²/s²
0-3 km storm-relative helicity
241 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

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 Mar 15, 10:23 AM EST, 58 minutes earlier.

Area forecast discussion, Mar 15, 10:23 AM EST, 58 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
1015AM EST FRI MAR 15 1996

SOME EARLY MORNING STORMS ARE CURRENTLY EXITING THE REGION...HOWEVER
THE SECOND VERSE IS FIXING TO BE SUNG.  THUNDERSTORMS ALONG THE PLATEAU
ARE MOVING EASTWARD AT AROUND 30 MILES AN HOUR.  SW VIRGINIA WILL LIKELY
ESCAPE THE WORST OF THE STORMS ALONG WITH NORTHEAST TENNESSEE.  FROM THE
CENTRAL VALLEY SOUTHWARD HOWEVER IS VULNERABLE TO STRONG STORMS.  VIEWING
A MODIFIED BNA SOUNDING GIVES A FAIRLY STRONG WIND POTENTIAL ALONG WITH
A HAIL POTENTIAL.  500 MB TEMPS OF -18 GIVE A VERY LOW VIL DE JURE.

LOOKING FORWARD THERE  IS A GOOD CHANCE THE PRECIP WILL CLEAR THE AREA
BY TONIGHT AND POPS COULD BE LOWERED OVER MOST OF THE REGION.  TEMPS AND
SATURDAY LOOK OK.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 15, 2:49 PM ESTFlash Flood WarningMRXHancock, Hawkins4 hr
Mar 15, 2:49 PM ESTFlash Flood WarningMRXJohnson, Sullivan4 hr
Mar 15, 3:28 PM ESTSevere Thunderstorm WarningMRXLoudon32 min
Mar 15, 4:29 PM ESTSevere Thunderstorm WarningMRXCocke61 min

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.