Alert archive / Tennessee / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 94, NWS Morristown, TN

June 26, 2000Claiborne County, Union County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 26, 2000, 3:15 PM EDT for Claiborne County, Union 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: Jun 26, 2000, 3:15 PM EDT (19:15 UTC)
Expired: Jun 26, 2000, 3:45 PM EDT
In force: 30 min
Issued by: NWS Morristown, TN
Area: Whole counties

Counties Claiborne County, TN, Union County, TN

The radar

The Knoxville radar (KMRX), 39 km from the middle of the area, began a volume at 19:19 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
Jun 26, 3:30 PM EDT	Thunderstorm Wind	Tazewell, 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 12:00Z, 7.3 hours before the alert went out and 257 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: 1048 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 928 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 59 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 261916
SVRMRX
TNC025-173-261945-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
315 PM EDT MON JUN 26 2000

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

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

* UNTIL 345 PM EDT

* AT 314 PM EDT...A TRAINED WEATHER SPOTTER REPORTED A SEVERE   
THUNDERSTORM WITH WINDS ESTIMATED AT 60 MPH NEAR SPEEDWELL.

THE THUNDERSTORM WILL AFFECT CLAIBORNE AND UNION COUNTY UNTIL 3:45 
PM.

THE SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING...
  WINDS UP TO 60 MPH...WHICH COULD PUSH DOWN TREES AND POWER LINES 
AND DAMAGE SOME STRUCTURES.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 26, 10:30 AM EDT, 4 hours 45 minutes earlier.

Area forecast discussion, Jun 26, 10:30 AM EDT, 4 hours 45 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
1030 AM EDT MON JUN 26 2000

UPPER LOW OVER SE GA WITH DEFORMATION ZONE OVER MRX. SPEED MAX
MOVING S ON WESTERN RIDGE SIDE OF DEFORM ZONE AIDED IN SOME
MORNING SHWRS/TSTM DEVELOPMENT. THIS AND CURRENT RADAR ECHOES
OVER SW CWA TEMPT FOR AN UPDATE WITH HIGHER POPS. HOWEVER...
UPPER FLOW IN TRANSITION AND SHOULD BECOME LESS FAVORABLE
LEAVING THE DIURNAL TRIGGER AND SLIGHT CHC P{OPS FOR THIS
AFTERNOON. ENUF SUN TO REACH 90.

SON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 8:21 PM EDT	Severe Thunderstorm Warning	MRX	Greene	24 min
Jun 25, 10:23 PM EDT	Severe Thunderstorm Warning	MRX	Hamilton	37 min
Jun 26, 3:00 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Scott	45 min
Jun 26, 3:37 PM EDT	Severe Thunderstorm Warning	MRX	Grainger	53 min
Jun 26, 3:55 PM EDT	Severe Thunderstorm Warning	MRX	Roane	50 min
Jun 26, 4:40 PM EDT	Severe Thunderstorm Warning	MRX	Roane	35 min
Jun 26, 6:09 PM EDT	Severe Thunderstorm Warning	MRX	Blount	51 min
Jun 26, 6:21 PM EDT	Flash Flood Warning	MRX	Monroe	3 hr

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; radar from the NEXRAD Level II archive.