Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 251, NWS Nashville, TN

June 2, 1998Sequatchie County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jun 2, 1998, 4:41 AM CDT for Sequatchie County, Tennessee. It was in force for 34 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 2, 1998, 4:41 AM CDT (09:41 UTC)
Expired: Jun 2, 1998, 5:15 AM CDT
In force: 34 min
Issued by: NWS Nashville, TN
Area: Whole counties

County Sequatchie 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
Jun 2, 4:30 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 9.7 hours before the alert went out and 137 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: 2 J/kg
Mixed-layer CIN: -459 J/kg
Mixed-layer LCL: 1888 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 258 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Nashville, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 2, 3:25 AM CDT, 1 hour 16 minutes earlier.

Area forecast discussion, Jun 2, 3:25 AM CDT, 1 hour 16 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
325 AM CDT JUN 2 1998

...SEVERE THUNDERSTORM WATCH UNTIL 8 AM...

TSTORM HAVE DEVELOPED RAPIDLY ALONG NE/SW ORIENTED WARM FRONT ACROSS
FA THIS MRNG. MID LEVEL JET STREAK EVIDENT ON IR SAT IMAGERY AS WELL
AS 70+ DEGREE DEWPOINTS FEEDING INTO STORMS HAS ADDED FUEL TO THE FIRE.
THUS...NOT MUCH TIME TO LOOK AT GRIDDED DATA.

EXPECT FRONTAL BOUNDARY TO REMAIN NEARLY STATIONARY ACROSS FA TODAY
GIVING A CONTINUED CHANCE OF CONVECTION. UNSEASONABLY STRONG SOUTHERN
CANADIAN VORTEX WILL DRIVE A COLD FRONT OUT OF THE NORTHERN PLAINS
AND INTO THE NRN TN VLY ON WED. WARM AIR IN THE MID LAYERS WILL SPREAD
OUT OF THE SRN PLAINS AND INTO THE REGION ON WED...POSSIBLY INHIBITING
SRN EXTENT OF CONVECTION. ATTM...WUD INTRODUCE SLGT CHC POPS FOR TNGT
AND CHC POPS FOR WED ACROSS THE NRN 2/3 OF MDL TN. AS FOR TEMPS...FWC
PD1 TEMPS LOOKS TO WARM BUT IN THE BALLPARK PDS 2 AND 3.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 2, 12:57 AM CDT	Severe Thunderstorm Warning	OHX	Benton, Houston, Humphreys	33 min
Jun 2, 1:16 AM CDT	Severe Thunderstorm Warning	OHX	Dickson	49 min
Jun 2, 1:41 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson	64 min
Jun 2, 2:12 AM CDT	Severe Thunderstorm Warning	OHX	Wilson	33 min
Jun 2, 2:18 AM CDT	Severe Thunderstorm Warning	OHX	Williamson	47 min
Jun 2, 2:25 AM CDT	Severe Thunderstorm Warning	OHX	Rutherford	50 min
Jun 2, 3:00 AM CDT	Severe Thunderstorm Warning	OHX	Cannon	50 min
Jun 2, 3:04 AM CDT	Tornado Warning	OHX	Cannon, Rutherford	51 min
Jun 2, 3:22 AM CDT	Severe Thunderstorm Warning	OHX	Coffee	33 min
Jun 2, 3:42 AM CDT	Tornado Warning	OHX	Coffee	33 min
Jun 2, 3:45 AM CDT	Severe Thunderstorm Warning	OHX	Grundy, Warren	50 min
Jun 2, 3:57 AM CDT	Severe Thunderstorm Warning	OHX	Cannon, Warren	48 min
Jun 2, 4:20 AM CDT	Tornado Warning	OHX	Warren	35 min
Jun 2, 4:32 AM CDT	Tornado Warning	OHX	Grundy	33 min
Jun 2, 4:44 AM CDT	Severe Thunderstorm Warning	OHX	Bledsoe	31 min
Jun 2, 4:53 AM CDT	Tornado Warning	OHX	Sequatchie	32 min

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.