Alert archive / Tennessee / Tornado Warnings in 2000

Tornado Warning 2, NWS Morristown, TN

April 20, 2000Campbell County, Scott County, Tennessee

NWS Morristown, TN issued this tornado warning at Apr 20, 2000, 9:45 PM EDT for Campbell County, Scott County, Tennessee. It was in force for 30 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 20, 2000, 9:45 PM EDT (01:45 UTC)
Expired: Apr 20, 2000, 10:15 PM EDT
In force: 30 min
Issued by: NWS Morristown, TN
Area: Whole counties

Counties Campbell County, TN, Scott County, TN

The radar

The Knoxville radar (KMRX), 87 km from the middle of the area, began a volume at 01:44 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

Time	Report	Where	Remark
Apr 20, 9:50 PM EDT	Tornado F1	Huntsville, TN	Twenty one homes in the Scenic Hills Estates subdivision received damage. One was totaled. The storm moved in from the southwest. The main damage came from straight-line winds, however, the one home that was totally destroyed was clearly from tornado damag

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.

Issued	Product	Office	Lasted
Apr 20, 6:15 PM EDT	Tornado Watch	SPC	4 hr
Apr 20, 9:35 PM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.8 hours before the alert went out and 206 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: 1081 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1023 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 274 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

314 
WFUS54 KMRX 210146
TORMRX
TNC013-151-210215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
945 PM EDT THU APR 20 2000

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* TORNADO WARNING FOR...
  CAMPBELL COUNTY IN EASTERN TENNESSEE
  SCOTT COUNTY IN EASTERN TENNESSEE

* UNTIL 1015 PM EDT

* AT 945 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A DEVELOPING TORNADO NEAR 
HUNTSVILLE...OR   8 MILES SOUTH OF ONEIDA...MOVING EAST AT 45 MPH. 
THIS WARNING IS AN UPGRADE FROM A SEVERE THUNDERSTORM WARNING ISSUED 
EARLIER.

* THE TORNADO IS EXPECTED TO BE NEAR...
  ELK VALLEY AROUND 1000 PM EDT
  LA FOLLETTE AROUND 1010 PM EDT
  FINCASTLE AROUND 1015 PM EDT

SPOTTERS HAVE REPORTED A FUNNEL CLOUD WITH THIS STORM NEAR DEER LODGE.

$$

LAT...LON 3647 8458 3629 8455 3635 8390 3657 8394

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 9:08 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Sequatchie	62 min
Apr 20, 9:12 PM EDT	Severe Thunderstorm Warning	MRX	Morgan, Scott	28 min
Apr 20, 9:36 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Scott	44 min
Apr 20, 9:44 PM EDT	Tornado Warning	MRX	Sequatchie	46 min
Apr 20, 9:48 PM EDT	Severe Thunderstorm Warning	MRX	Marion	62 min
Apr 20, 10:01 PM EDT	Severe Thunderstorm Warning	MRX	Hamilton, Meigs, Rhea	59 min
Apr 20, 10:12 PM EDT	Tornado Warning	MRX	Claiborne	48 min
Apr 20, 10:51 PM EDT	Severe Thunderstorm Warning	MRX	Bradley	59 min
Apr 20, 11:44 PM EDT	Severe Thunderstorm Warning	MRX	Monroe	61 min

Nearby

Tornado Warnings in Tennessee, 2000 Every tornado warning in 2000 Tornadoes 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; radar from the NEXRAD Level II archive.