Alert archive / Tennessee / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 2, NWS Morristown, TN

February 13, 2000Bradley County, Hamilton County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Feb 13, 2000, 9:32 PM EST for Bradley County, Hamilton County, Tennessee. It was in force for 28 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: Feb 13, 2000, 9:32 PM EST (02:32 UTC)
Expired: Feb 13, 2000, 10:00 PM EST
In force: 28 min
Issued by: NWS Morristown, TN
Area: Whole counties

Counties Bradley County, TN, Hamilton County, TN

What was reported inside it

Time	Report	Where	Remark
Feb 13, 9:45 PM EST	Thunderstorm Wind	Chattanooga, TN
Feb 13, 9:45 PM EST	Thunderstorm Wind	Signal Mtn, 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 00:00Z, 2.5 hours before the alert went out and 179 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 107 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 556 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 523 m²/s²
0-3 km storm-relative helicity: 558 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMRX 140232
SVRMRX
TNC011-065-140300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
932 PM EST SUN FEB 13 2000

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BRADLEY COUNTY IN EASTERN TENNESSEE
  HAMILTON COUNTY IN EASTERN TENNESSEE

* UNTIL 1000 PM EST(900 PM CST)

* AT 930 PM EST(830 PM CST)...A SEVERE THUNDERSTORM WAS REPORTED NEAR
  SIGNAL MOUNTAIN...OR 8 MILES WEST OF CHATTANOOGA...MOVING EAST AT
  65 MPH.

THE SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING...
  WINDS UP TO 60 MPH...WHICH COULD PUSH OVER SHALLOW ROOTED TREES AND
  BREAK LIMBS OFF OF TREES ABOUT THE SIZE OF YhOUR WRIST.
  FREQUENT AND DEADLY CLOUD-TO-GROUND LIGHTNING.

STAY AWAY FROM WINDOWS.

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 13, 10:19 PM EST	Severe Thunderstorm Warning	MRX	Polk	46 min
Feb 13, 10:45 PM EST	Severe Thunderstorm Warning	MRX	Blount, Knox, Monroe, Sevier	60 min
Feb 13, 11:06 PM EST	Severe Thunderstorm Warning	MRX	Cocke, Grainger, Hamblen, Jefferson	59 min
Feb 13, 11:13 PM EST	Severe Thunderstorm Warning	MRX	Hancock, Hawkins	62 min
Feb 13, 11:13 PM EST	Severe Thunderstorm Warning	MRX	Greene, Unicoi, Washington	62 min
Feb 14, 1:23 AM EST	Severe Thunderstorm Warning	MRX	Hamilton, Marion	32 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2000 Every severe thunderstorm warning in 2000

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.