Alert archive / Tennessee / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 178, NWS Nashville, TN

June 9, 20104 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jun 9, 2010, 5:12 PM CDT for 4 counties in Tennessee. It was in force for 33 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 9, 2010, 5:12 PM CDT (22:12 UTC)
Expired: Jun 9, 2010, 5:45 PM CDT
In force: 33 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Cannon County, TN, Coffee County, TN, Grundy County, TN, Warren County, TN

The radar

The Northeast Alabama radar (KHTX), 75 km from the middle of the area, began a volume at 22:14 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, 10.2 hours before the alert went out and 86 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: 479 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 726 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.2

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 Jun 9, 5:04 PM CDT, 8 minutes earlier.

Area forecast discussion, Jun 9, 5:04 PM CDT, 8 minutes before

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Hazardous weather outlook, Jun 9, 7:35 AM CDT, 9 hours 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
735 AM CDT WED JUN 9 2010

TNZ005>011-022>034-056>066-075-077>080-093>095-101130-
STEWART-MONTGOMERY-ROBERTSON-SUMNER-MACON-CLAY-PICKETT-BENTON-
HOUSTON-HUMPHREYS-DICKSON-CHEATHAM-DAVIDSON-WILSON-TROUSDALE-
SMITH-JACKSON-PUTNAM-OVERTON-FENTRESS-PERRY-HICKMAN-LEWIS-
WILLIAMSON-MAURY-MARSHALL-RUTHERFORD-CANNON-DE KALB-WHITE-
CUMBERLAND-BEDFORD-COFFEE-WARREN-GRUNDY-VAN BUREN-WAYNE-LAWRENCE-
GILES-
735 AM CDT WED JUN 9 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT WILL BRING NUMEROUS THUNDERSTORMS TO THE AREA TODAY
AND POSSIBLY TONIGHT. THERE IS A SLIGHT RISK FOR SEVERE STORMS...
MAINLY DAMAGING DOWNBURST WINDS AND HAIL. THE ATMOSPHERE WILL BE
VERY MOIST THUS THUNDERSTORMS WILL PRODUCE VERY HEAVY DOWNPOURS
AND POSSIBLY LOCALIZED FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A LINGERING FRONTAL BOUNDARY WILL HELP SET OFF SCATTERED TO POSSIBLY
NUMEROUS THUNDERSTORMS ON THURSDAY...SOME MAY EVEN BECOME STRONG TO
SEVERE LOCALLY. ISOLATED THUNDERSTORMS WILL CONTINUE THROUGH THE
WEEKEND...BUT MAINLY AFTERNOONS AND EVENINGS.

.SPOTTER INFORMATION STATEMENT...

EVEN THOUGH ANY SEVERE THUNDERSTORMS ARE EXPECTED TO BE BRIEF AND
ISOLATED, SPOTTERS ARE ENCOURAGED TO CLOSELY MONITOR WEATHER
CONDITIONS AND BE PREPARED TO CALL IN ANYTHING REACHING REPORTING
CRITERIA.

SPOTTER THUNDERSTORM REPORTING CRITERIA...
TORNADO
FUNNEL CLOUD
FLOODING
HAIL >= 1/2 INCH
WINDS > 50 MPH (MEASURED)
STRUCTURAL DAMAGE
TREES OR POWER LINES DOWN

07

In the hours before

Local storm report, Jun 9, 4:02 PM CDT, 1 hour 10 minutes before

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Local storm report, Jun 9, 4:26 PM CDT, 46 minutes before

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Local storm report, Jun 9, 4:33 PM CDT, 39 minutes before

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Local storm report, Jun 9, 4:40 PM CDT, 32 minutes before

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Local storm report, Jun 9, 4:50 PM CDT, 22 minutes before

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Local storm report, Jun 9, 5:02 PM CDT, 10 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
Jun 9, 3:15 PM CDT	Flash Flood Warning	OHX	Wilson	3 hr
Jun 9, 3:19 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Williamson, Wilson	26 min
Jun 9, 3:22 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman	23 min
Jun 9, 3:23 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Warren	37 min
Jun 9, 3:34 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Maury, Williamson	26 min
Jun 9, 3:38 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Wilson	37 min
Jun 9, 3:43 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Smith	32 min
Jun 9, 3:48 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Rutherford, Wilson	27 min
Jun 9, 3:59 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	46 min
Jun 9, 4:15 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, White, Wilson	30 min
Jun 9, 4:18 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Rutherford, Warren	27 min
Jun 9, 4:41 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Van Buren, Warren, White	34 min
Jun 9, 4:46 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Rutherford	29 min
Jun 9, 4:50 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence, Wayne	25 min
Jun 9, 5:14 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Lewis, Maury, Wayne	31 min
Jun 9, 5:20 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Coffee	25 min
Jun 9, 5:25 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Perry, Wayne	35 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2010 Every severe thunderstorm warning in 2010

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.