Alert archive / Tennessee / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 252, NWS Morristown, TN

December 10, 2004Roane County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Dec 10, 2004, 3:36 PM EST for Roane County, Tennessee. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Dec 10, 2004, 3:36 PM EST (20:36 UTC)
Expired
Dec 10, 2004, 4:00 PM EST
In force
24 min
Issued by
NWS Morristown, TN
Area
Counties, with a storm outline in the text

County Roane County, TN

The radar

The Knoxville radar (KMRX), 111 km from the middle of the area, began a volume at 20:37 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, 8.6 hours before the alert went out and 186 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 2004-12-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 137 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2004-12-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
137 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
557 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KMRX 102036
SVRMRX
TNC145-102100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
335 PM EST FRI DEC 10 2004

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ROANE COUNTY IN EAST TENNESSEE
  THIS INCLUDES THE CITY OF KINGSTON

* UNTIL 400 PM EST

* AT 330 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS   
STORM WAS LOCATED NEAR KINGSTON...AND MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BRADBURY BY 340 PM EST

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS

LAT...LON 3582 8474 3577 8463 3568 8459 3592 8430
      3602 8438

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 9:31 AM ESTSevere Thunderstorm WarningMRXBlount29 min
Dec 10, 9:53 AM ESTSevere Thunderstorm WarningMRXSevier52 min
Dec 10, 2:00 PM ESTSevere Thunderstorm WarningMRXLoudon30 min
Dec 10, 2:21 PM ESTSevere Thunderstorm WarningMRXBledsoe, Rhea24 min
Dec 10, 2:27 PM ESTSevere Thunderstorm WarningMRXHawkins33 min
Dec 10, 2:33 PM ESTSevere Thunderstorm WarningMRXLoudon12 min
Dec 10, 2:40 PM ESTSevere Thunderstorm WarningMRXMcMinn35 min
Dec 10, 2:46 PM ESTSevere Thunderstorm WarningMRXBledsoe, Rhea14 min
Dec 10, 3:01 PM ESTSevere Thunderstorm WarningMRXMeigs, Roane29 min
Dec 10, 3:11 PM ESTSevere Thunderstorm WarningMRXSullivan34 min
Dec 10, 3:15 PM ESTSevere Thunderstorm WarningMRXBlount30 min
Dec 10, 4:17 PM ESTSevere Thunderstorm WarningMRXKnox28 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2004Every severe thunderstorm warning in 2004

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.