Alert archive / Tennessee / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 73, NWS Morristown, TN

May 13, 1999Bledsoe County, Rhea County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at May 13, 1999, 2:58 PM CDT for Bledsoe County, Rhea County, Tennessee. It was in force for 32 min. 2 reports 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
May 13, 1999, 2:58 PM CDT (19:58 UTC)
Expired
May 13, 1999, 3:30 PM CDT
In force
32 min
Issued by
NWS Morristown, TN
Area
Whole counties

Counties Bledsoe County, TN, Rhea County, TN

The radar

The Northeast Alabama radar (KHTX), 119 km from the middle of the area, began a volume at 20:01 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
May 13, 3:15 PM CDTHail 1Pikeville, TN
May 13, 3:29 PM CDTHail 1.75Spring City, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 13, 12:00 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.0 hours before the alert went out and 150 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 1999-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1999-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
686 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
11 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
May 13, 12:54 PM CDTSevere Thunderstorm WarningMRXAnderson, Union46 min
May 13, 1:26 PM CDTSevere Thunderstorm WarningMRXBradley29 min
May 13, 1:38 PM CDTSevere Thunderstorm WarningMRXMeigs, Rhea32 min
May 13, 1:47 PM CDTSevere Thunderstorm WarningMRXMcMinn48 min
May 13, 2:05 PM CDTSevere Thunderstorm WarningMRXHamilton35 min
May 13, 2:35 PM CDTSevere Thunderstorm WarningMRXLoudon, Roane45 min
May 13, 2:44 PM CDTSevere Thunderstorm WarningMRXMorgan31 min
May 13, 2:56 PM CDTSevere Thunderstorm WarningMRXScott44 min
May 13, 3:32 PM CDTSevere Thunderstorm WarningMRXMeigs, Roane43 min
May 13, 3:33 PM CDTSevere Thunderstorm WarningMRXKnox32 min
May 13, 3:41 PM CDTSevere Thunderstorm WarningMRXBradley49 min
May 13, 4:02 PM CDTSevere Thunderstorm WarningMRXRhea33 min
May 13, 4:07 PM CDTSevere Thunderstorm WarningMRXJefferson, Sevier48 min
May 13, 4:10 PM CDTSevere Thunderstorm WarningMRXMeigs30 min
May 13, 4:23 PM CDTSevere Thunderstorm WarningMRXCocke, Hamblen32 min
May 13, 4:36 PM CDTSevere Thunderstorm WarningMRXGreene34 min
May 13, 5:21 PM CDTSevere Thunderstorm WarningMRXHawkins34 min
May 13, 5:26 PM CDTSevere Thunderstorm WarningMRXHamilton, Meigs49 min
May 13, 5:57 PM CDTSevere Thunderstorm WarningMRXBradley33 min
May 13, 6:09 PM CDTSevere Thunderstorm WarningMRXPolk46 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.