Alert archive / Tennessee / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 173, NWS Nashville, TN

April 21, 2006Cumberland County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Apr 21, 2006, 4:46 PM CDT for Cumberland County, Tennessee. It was in force for 29 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: Apr 21, 2006, 4:46 PM CDT (21:46 UTC)
Expired: Apr 21, 2006, 5:15 PM CDT
In force: 29 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Cumberland County, TN

The radar

The Nashville radar (KOHX), 144 km from the middle of the area, began a volume at 21:47 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, 9.8 hours before the alert went out and 145 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: 3 J/kg
Mixed-layer CIN: -311 J/kg
Mixed-layer LCL: 1339 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 140 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 Nashville, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 21, 3:50 PM CDT, 56 minutes earlier.

Area forecast discussion, Apr 21, 3:50 PM CDT, 56 minutes before

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Hazardous weather outlook, Apr 21, 8:40 AM CDT, 8 hours 6 minutes before

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In the hours before

Local storm report, Apr 21, 2:53 PM CDT, 1 hour 53 minutes before

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Special weather statement, Apr 21, 4:15 PM CDT, 31 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 12:34 AM CDT	Severe Thunderstorm Warning	OHX	Perry, Wayne	71 min
Apr 21, 1:31 AM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lawrence, Lewis	74 min
Apr 21, 1:44 AM CDT	Severe Thunderstorm Warning	OHX	Wayne	46 min
Apr 21, 2:44 AM CDT	Severe Thunderstorm Warning	OHX	Maury	46 min
Apr 21, 3:12 AM CDT	Severe Thunderstorm Warning	OHX	Marshall, Williamson	63 min
Apr 21, 3:19 AM CDT	Flash Flood Warning	OHX	Wayne	116 min
Apr 21, 3:29 AM CDT	Severe Thunderstorm Warning	OHX	Coffee	31 min
Apr 21, 3:32 AM CDT	Severe Thunderstorm Warning	OHX	Bedford	28 min
Apr 21, 6:04 AM CDT	Severe Thunderstorm Warning	OHX	Perry, Wayne	56 min
Apr 21, 2:39 PM CDT	Severe Thunderstorm Warning	OHX	Van Buren, Warren	36 min
Apr 21, 4:07 PM CDT	Flood Watch	OHX	Clay, Coffee, Cumberland, Fentress, Grundy, Jackson and 6 more	12 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2006 Every severe thunderstorm warning in 2006

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.