Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 13, NWS Morristown, TN

February 22, 2003Claiborne County, Union County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Feb 22, 2003, 4:41 PM EST for Claiborne County, Union County, Tennessee. It was in force for 49 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: Feb 22, 2003, 4:41 PM EST (21:41 UTC)
Expired: Feb 22, 2003, 5:30 PM EST
In force: 49 min
Issued by: NWS Morristown, TN
Area: Counties, with a storm outline in the text

Counties Claiborne County, TN, Union County, TN

The radar

The Knoxville radar (KMRX), 38 km from the middle of the area, began a volume at 21:42 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, 9.7 hours before the alert went out and 260 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 546 m above ground
0-6 km bulk shear: 90 kt
0-1 km storm-relative helicity: 250 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KMRX 222141
SVRMRX
TNC025-173-222230-
/NEW.KMRX.SV.W.ETN#.0302222140Z-0302222230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
440 PM EST SAT FEB 22 2003

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLAIBORNE COUNTY IN EAST TENNESSEE
  UNION COUNTY IN EAST TENNESSEE

* UNTIL 530 PM EST

* AT 437 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  LINE OF SEVERE THUNDERSTORMS FROM NEAR SPEEDWELL TO 5 MILES        
  NORTHEAST OF CLINTON...MOVING NORTHEAST AT 60 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SHARPS CHAPEL AROUND 445 PM EST
  ROSE HILL AROUND 450 PM EST
  ARTHUR AROUND 455 PM EST
  SPRINGDALE AROUND 500 PM EST
  TAZEWELL AROUND 505 PM EST
  HOWARD QUARTER AROUND 510 PM EST

THE SEVERE THUNDERSTORMS ARE CAPABLE OF PRODUCING...
  WINDS UP TO 60 MPH...WHICH COULD PUSH OVER SHALLOW ROOTED TREES AND
  BREAK TREE LIMBS ABOUT THE SIZE OF YOUR WRIST.
  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.

A TORNADO WATCH IS ALSO IN EFFECT. REMEMBER...TORNADOES CAN AND
OCCASIONALLY DO DEVELOP RAPIDLY IN SEVERE THUNDERSTORMS. IF
THREATENING WEATHER IS OBSERVED...MOVE TO SAFE SHELTER IMMEDIATELY.

LAT...LON 3631 8377 3621 8379 3630 8399 3659 8395
          3660 8349 3650 8342 3639 8358 3632 8375

$$

DMG

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 22, 7:22 AM EST	Severe Thunderstorm Warning	MRX	Hamilton	38 min
Feb 22, 7:27 AM EST	Severe Thunderstorm Warning	MRX	Hamilton, Marion	33 min
Feb 22, 7:38 AM EST	Severe Thunderstorm Warning	MRX	Bledsoe, Sequatchie	22 min
Feb 22, 7:42 AM EST	Severe Thunderstorm Warning	MRX	Hamilton, Marion	18 min
Feb 22, 8:33 AM EST	Severe Thunderstorm Warning	MRX	Hamilton	12 min
Feb 22, 8:38 AM EST	Severe Thunderstorm Warning	MRX	Hamilton	7 min
Feb 22, 2:49 PM EST	Severe Thunderstorm Warning	MRX	Scott	41 min
Feb 22, 3:04 PM EST	Severe Thunderstorm Warning	MRX	Morgan	41 min
Feb 22, 3:35 PM EST	Severe Thunderstorm Warning	MRX	Scott	40 min
Feb 22, 4:02 PM EST	Severe Thunderstorm Warning	MRX	Anderson, Roane	43 min
Feb 22, 4:24 PM EST	Severe Thunderstorm Warning	MRX	Campbell	51 min
Feb 22, 4:53 PM EST	Severe Thunderstorm Warning	MRX	Scott	37 min
Feb 22, 5:14 PM EST	Severe Thunderstorm Warning	MRX	Blount, Knox	46 min
Feb 22, 5:28 PM EST	Severe Thunderstorm Warning	MRX	Union	32 min
Feb 22, 6:25 PM EST	Severe Thunderstorm Warning	MRX	Hancock	50 min
Feb 22, 6:43 PM EST	Severe Thunderstorm Warning	MRX	Hawkins	47 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2003 Every severe thunderstorm warning in 2003

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.