Alert archive / Tennessee / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 95, NWS Morristown, TN

June 26, 2000Grainger County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 26, 2000, 3:37 PM EDT for Grainger County, Tennessee. It was in force for 53 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, 3:37 PM EDT (19:37 UTC)
Expired: Jun 26, 2000, 4:30 PM EDT
In force: 53 min
Issued by: NWS Morristown, TN
Area: Whole counties

County Grainger County, TN

The radar

The Knoxville radar (KMRX), 15 km from the middle of the area, began a volume at 19:37 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, 4:10 PM EDT	Thunderstorm Wind	Bean Station, 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, 7.6 hours before the alert went out and 278 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 261939
SVRMRX
TNC057-262030-

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

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GRAINGER COUNTY IN EASTERN TENNESSEE

* UNTIL 430 PM EDT

* AT 331 PM EDT...DOPPLER WEATHER RADAR AND A TRAINED WEATHER 
SPOTTER REPORTED A SEVERE THUNDERSTORM 13 MILES NORTHWEST OF 
RUTLEDGE...OR 11 MILES NORTHEAST OF MAYNARDVILLE...MOVING EAST AT 25 
MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  RUTLEDGE AROUND 400 PM EDT
  THORN HILL AROUND 405 PM EDT

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 YOUR WRIST.   VERY 
HEAVY RAINFALL WHICH MAY CAUSE LOCALIZED FLOODING IS ALSO POSSIBLE.

$$

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, 3:30 PM EDT, 7 minutes earlier.

Area forecast discussion, Jun 26, 3:30 PM EDT, 7 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
330 PM EDT MON JUN 26 2000

NORTHERN STREAM AND THICKNESS PACKING EDGING CLOSER TO CWA.
UPPER LOW MEANDERING AROUND S GA WITH COL OVER MRX CWA.
THICKNESS DIFLUENCE OVER MRX TONIGHT AND LESS SO TUE.
THETA-E RIDGING SLIPS INTO E TN VALLEY TUE. ETA/NGM HOLD OFF MOST
POPS UNTIL AFTER 12Z. FEEL UPPER DIFFLUENCE...MID LEVEL TROFFING
AND EXPECTED STORM MOTION LATER TONIGHT WILL BRING ONSET OF PRECIP
PRIOR TO 27/12Z. LOW LEVEL BOUNDARY AND BETTER CONVERGENCE AND DEEPER
MOISTURE FOR TUE. PLAN TO USE EVENING GROUPING FOR ONGOING POPS
THEN HIGH CHC WEST AND SLIGHT CHC EAST LATE TONIGHT. LIKELY TUESDAY
AS FRONTAL BOUNDARY SLIDES IN. UNCERTAINTY WITH POSITION OF SYNOPTIC
FEATURES BY TUESDAY NIGHT WITH EVERYTHING WEAKENING. WILL STICK WITH
CHC POPS MAINLY EVENING HIGHER POP SOUTH. CONT CHC POPS WEDNESDAY
AS BOUNDARY WILL TAKE ON WARM FRONT CHARACTERISTS WITH UPPER IMPULSE
MOVING IN LATE FROM THE WEST.

CHA TB 070/087 069/088 069 17465
TYS TB 068/085 067/086 067 17464
TRI TB 065/083 063/084 063 17463
OQT TB 070/084 066/084 066 17464=

.E TN...NONE.
.SW VA...SVR TSTM WATCH TIL 600 PM EDT.
.SW NC...sNONE.

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, 3:15 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Union	30 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.