Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 271, NWS Morristown, TN

June 1, 1998Blount County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 1, 1998, 1:00 AM EDT for Blount County, Tennessee. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 1, 1998, 1:00 AM EDT (05:00 UTC)
Expired: Jun 1, 1998, 2:05 AM EDT
In force: 65 min
Issued by: NWS Morristown, TN
Area: Whole counties

County Blount County, TN

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 31, 9:45 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 5.0 hours before the alert went out and 246 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: 3629 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1064 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 302 m²/s²
Significant tornado parameter: 5.1
Supercell composite: 21.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 May 31, 8:25 PM EDT, 4 hours 35 minutes earlier.

Area forecast discussion, May 31, 8:25 PM EDT, 4 hours 35 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
825 PM EDT SUN MAY 31 1998

MODIFIED BNA SOUNDING RATHER LETHAL THIS EVE WITH CAPE ARND 2800 AND
HELICITY ARND 300.  WITH THIS PROFILE...SUPERCELL STORMS MAY DEVELOP
ALTHOUGH MAIN THREAT APPEARS TO BE DOWNBURST WIND AND HAIL.  INITIAL
LINE OF STORMS MOVG ALONG OUTFLOW WL REACH SW VA ZONES ARND 02Z AND
LATER WHILE DEVELOPMENT WL OCCUR AFT MIDNITE MUCH OF THE REMAINDER OF
THE FA WITH TE EXCEPTION OF EXTREME NE TN ZONES.  STORMS WL REACH THIS
AREA ARND 03-04Z.  DONT EXPECT CD FNT ON PLATEAU UNTIL 08Z.

In the hours before

Local storm report, Jun 1, 12:39 AM EDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
1239 AM EDT MON JUN 1 1998

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1155 PM    CLAIRFIELD                TN   WIND DAMAGE
05/31/98   CLAIBORNE                      SEVERAL LARGE TREES DOWN IN
                                          CLAIRFIELD AREA AND 2 PLUS
                                          INCHES OF RAIN IN SPEEDWELL
                                          REPORTED BY STORM SPOTTER

Local storm report, Jun 1, 12:54 AM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
1254 AM EDT MON JUN 1 1998

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1215 AM    COUNTY WIDE               TN   WIND DAMAGE
06/01/98   CAMPBELL                       TREES DOWN COUNTY WIDE
                                          REPORTED BY SHERIFF'S OFFICE
                                          ALSO MINOR FLOODING ON
                                          ROADWAYS

1250 AM    RUTLEDGE                  TN   WIND DAMAGE
06/01/98   GRAINGER                       60 MPH WINDS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 10:25 PM EDT	Tornado Warning	MRX	Campbell	50 min
May 31, 10:28 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne	62 min
May 31, 10:43 PM EDT	Tornado Warning	MRX	Claiborne	47 min
May 31, 10:52 PM EDT	Severe Thunderstorm Warning	MRX	Scott	63 min
May 31, 11:10 PM EDT	Severe Thunderstorm Warning	MRX	Campbell	65 min
May 31, 11:30 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Claiborne, Union	60 min
May 31, 11:30 PM EDT	Severe Thunderstorm Warning	MRX	Fentress, Morgan	60 min
May 31, 11:54 PM EDT	Severe Thunderstorm Warning	MRX	Scott	66 min
Jun 1, 12:12 AM EDT	Flash Flood Warning	MRX	Campbell, Scott	3 hr
Jun 1, 12:19 AM EDT	Severe Thunderstorm Warning	MRX	Grainger	61 min
Jun 1, 12:28 AM EDT	Severe Thunderstorm Warning	MRX	Anderson	62 min
Jun 1, 12:33 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne	47 min
Jun 1, 12:35 AM EDT	Severe Thunderstorm Warning	MRX	Campbell	50 min
Jun 1, 12:45 AM EDT	Severe Thunderstorm Warning	MRX	Hamblen, Jefferson	65 min
Jun 1, 12:45 AM EDT	Severe Thunderstorm Warning	MRX	Knox	65 min
Jun 1, 1:00 AM EDT	Severe Thunderstorm Warning	MRX	Cocke, Sevier	65 min
Jun 1, 1:30 AM EDT	Flash Flood Warning	MRX	Anderson, Knox	3 hr
Jun 1, 2:02 AM EDT	Flash Flood Warning	MRX	Blount	3 hr
Jun 1, 2:18 AM EDT	Severe Thunderstorm Warning	MRX	Meigs, Rhea	32 min
Jun 1, 2:20 AM EDT	Severe Thunderstorm Warning	MRX	Meigs, Rhea	30 min
Jun 1, 2:58 AM EDT	Severe Thunderstorm Warning	MRX	McMinn	47 min
Jun 1, 4:24 AM EDT	Flash Flood Warning	MRX	Blount, Knox	3 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 1998 Every severe thunderstorm warning in 1998

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.