Alert archive / Tennessee / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 49, NWS Morristown, TN

May 2, 2002Loudon County, Roane County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at May 2, 2002, 6:40 PM EDT for Loudon County, Roane County, Tennessee. It was in force for 50 min. 3 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 2, 2002, 6:40 PM EDT (22:40 UTC)
Expired: May 2, 2002, 7:30 PM EDT
In force: 50 min
Issued by: NWS Morristown, TN
Area: Whole counties

Counties Loudon County, TN, Roane County, TN

The radar

The Knoxville radar (KMRX), 101 km from the middle of the area, began a volume at 22:40 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
May 2, 7:00 PM EDT	Thunderstorm Wind	Loudon, TN
May 2, 7:02 PM EDT	Thunderstorm Wind	Rockwood, TN
May 2, 7:39 PM EDT	Thunderstorm Wind	Greenback, 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.

Issued	Product	Office	Lasted
May 2, 1:30 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.7 hours before the alert went out and 200 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: 1583 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 689 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 391 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMRX 022240
SVRMRX
TNC105-145-022330-
/NEW.KMRX.SV.W.0071.022240-022330/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
640 PM EDT THU MAY 2 2002

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LOUDON COUNTY IN EAST TENNESSEE
  ROANE COUNTY IN EAST TENNESSEE

* UNTIL 730 PM EDT

* AT 638 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR EAGLE FURNACE...OR 8 MILES SOUTH OF
  ROCKWOOD...MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FAIRVIEW AROUND 645 PM EDT
  PAINT ROCK AROUND 650 PM EDT
  BRADBURY AROUND 655 PM EDT
  LENOIR CITY AROUND 700 PM EDT

THE SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING...
  WINDS UP TO 70 MPH...WHICH COULD PUSH OVER SHALLOW ROOTED TREES...
  AND DAMAGE CHIMNEYS AND TV ANTENNAS.
  HAIL UP TO 1 INCH IN DIAMETER...OR THE SIZE OF QUARTERS.
  VERY HEAVY RAINFALL WHICH MAY CAUSE LOCALIZED FLOODING.
  FREQUENT AND DEADLY CLOUD-TO-GROUND LIGHTNING.

STAY AWAY FROM WINDOWS. $$

LAT...LON 3584 8481 3567 8478 3576 8425 3596 8435

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 10:27 PM EDT	Severe Thunderstorm Warning	MRX	Sullivan	48 min
May 1, 10:59 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Johnson	46 min
May 2, 5:53 PM EDT	Severe Thunderstorm Warning	MRX	Roane	52 min
May 2, 5:56 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Sequatchie	49 min
May 2, 6:19 PM EDT	Severe Thunderstorm Warning	MRX	Meigs, Rhea	41 min
May 2, 6:27 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Knox	48 min
May 2, 7:14 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Knox	46 min
May 2, 7:17 PM EDT	Severe Thunderstorm Warning	MRX	Jefferson, Sevier	43 min
May 2, 7:18 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Loudon, McMinn, Monroe	57 min
May 2, 7:30 PM EDT	Severe Thunderstorm Warning	MRX	Sullivan	45 min
May 2, 7:40 PM EDT	Severe Thunderstorm Warning	MRX	Cocke	50 min
May 2, 7:56 PM EDT	Severe Thunderstorm Warning	MRX	Sevier	34 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2002 Every severe thunderstorm warning in 2002

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.