Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 352, NWS Morristown, TN

June 15, 1998Claiborne County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 15, 1998, 2:36 AM EDT for Claiborne 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 15, 1998, 2:36 AM EDT (06:36 UTC)
Expired: Jun 15, 1998, 3:10 AM EDT
In force: 34 min
Issued by: NWS Morristown, TN
Area: Whole counties

County Claiborne County, TN

The radar

The Knoxville radar (KMRX), 42 km from the middle of the area, began a volume at 06:39 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 00:00Z, 6.6 hours before the alert went out and 266 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: 3344 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 936 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 451 m²/s²
0-3 km storm-relative helicity: 509 m²/s²
Significant tornado parameter: 11.0
Supercell composite: 67.6

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 Jun 14, 2:40 PM EDT, 11 hours 56 minutes earlier.

Area forecast discussion, Jun 14, 2:40 PM EDT, 11 hours 56 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 1:08 AM EDT	Severe Thunderstorm Warning	MRX	Fentress	32 min
Jun 15, 1:18 AM EDT	Severe Thunderstorm Warning	MRX	Cumberland	47 min
Jun 15, 1:31 AM EDT	Severe Thunderstorm Warning	MRX	Morgan	49 min
Jun 15, 1:39 AM EDT	Severe Thunderstorm Warning	MRX	Scott	31 min
Jun 15, 2:09 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Roane	61 min
Jun 15, 2:09 AM EDT	Severe Thunderstorm Warning	MRX	Campbell	61 min
Jun 15, 2:36 AM EDT	Severe Thunderstorm Warning	MRX	Knox, Union	34 min
Jun 15, 2:44 AM EDT	Severe Thunderstorm Warning	MRX	Hamilton	31 min
Jun 15, 2:58 AM EDT	Severe Thunderstorm Warning	MRX	Bradley	47 min
Jun 15, 3:10 AM EDT	Severe Thunderstorm Warning	MRX	Hamblen, Hawkins, Jefferson	35 min
Jun 15, 3:10 AM EDT	Severe Thunderstorm Warning	MRX	Sevier	35 min
Jun 15, 3:10 AM EDT	Severe Thunderstorm Warning	MRX	Hancock	35 min
Jun 15, 3:16 AM EDT	Severe Thunderstorm Warning	MRX	Polk	64 min
Jun 15, 1:58 PM EDT	Severe Thunderstorm Warning	MRX	Scott	47 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; radar from the NEXRAD Level II archive.