Alert archive / Tennessee / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 69, NWS Morristown, TN

June 23, 2019Morgan County, Scott County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 23, 2019, 6:41 PM EDT for Morgan County, Scott County, Tennessee. It was in force for 49 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 23, 2019, 6:41 PM EDT (22:41 UTC)
Expired: Jun 23, 2019, 7:30 PM EDT
In force: 49 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Morgan County, TN, Scott County, TN

The radar

The Knoxville radar (KMRX), 106 km from the middle of the area, began a volume at 22:44 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 12:00Z, 10.7 hours before the alert went out and 182 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: 310 J/kg
Mixed-layer CIN: -162 J/kg
Mixed-layer LCL: 1141 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 23, 3:17 PM EDT, 3 hours 24 minutes earlier.

Area forecast discussion, Jun 23, 3:17 PM EDT, 3 hours 24 minutes before

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Hazardous weather outlook, Jun 23, 3:19 PM EDT, 3 hours 22 minutes before

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In the hours before

Special weather statement, Jun 23, 2:00 PM EDT, 4 hours 41 minutes before

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Special weather statement, Jun 23, 2:28 PM EDT, 4 hours 13 minutes before

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Special weather statement, Jun 23, 2:52 PM EDT, 3 hours 49 minutes before

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Special weather statement, Jun 23, 3:58 PM EDT, 2 hours 43 minutes before

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Special weather statement, Jun 23, 4:38 PM EDT, 2 hours 3 minutes before

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Special weather statement, Jun 23, 6:23 PM EDT, 18 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 22, 8:35 PM EDT	Areal Flood Advisory	MRX	Polk	115 min
Jun 23, 1:43 PM EDT	Special Weather Statement	MRX	Sequatchie	47 min
Jun 23, 2:00 PM EDT	Special Weather Statement	MRX	Marion	45 min
Jun 23, 2:20 PM EDT	Severe Thunderstorm Warning	MRX	Marion	40 min
Jun 23, 2:28 PM EDT	Special Weather Statement	MRX	Marion	47 min
Jun 23, 2:52 PM EDT	Special Weather Statement	MRX	Bledsoe, Rhea	53 min
Jun 23, 3:58 PM EDT	Special Weather Statement	MRX	Marion	47 min
Jun 23, 4:38 PM EDT	Special Weather Statement	MRX	Hamilton	52 min
Jun 23, 6:23 PM EDT	Special Weather Statement	MRX	Morgan	52 min
Jun 23, 1:04 PM EDT	Special Weather Statement	MRX	Clay	41 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2019 Every severe thunderstorm warning in 2019

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.