Alert archive / Tennessee / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 381, NWS Nashville, TN

September 22, 2006Stewart County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Sep 22, 2006, 8:18 PM CDT for Stewart County, Tennessee. It was in force for 57 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
Sep 22, 2006, 8:18 PM CDT (01:18 UTC)
Expired
Sep 22, 2006, 9:15 PM CDT
In force
57 min
Issued by
NWS Nashville, TN
Area
Counties, with a storm outline in the text

County Stewart County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.3 hours before the alert went out and 118 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2006-09-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1397 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2006-09-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 321 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1397 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
838 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
321 m²/s²
0-3 km storm-relative helicity
437 m²/s²
Significant tornado parameter
3.9
Supercell composite
14.0

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 Sep 22, 3:32 PM CDT, 4 hours 46 minutes earlier.

Area forecast discussion, Sep 22, 3:32 PM CDT, 4 hours 46 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
332 PM CDT FRI SEP 22 2006

.DISCUSSION...
UPPER LOW IS LOCATED OVER SD WITH BROAD TROUGHING OVER THE WESTERN
AND CENTRAL U.S.. THE TROUGH WILL AMPLIFY SOME AS IT MOVES SLOWLY
EASTWARD WITH THE AXIS NOT CROSSING THE MID STATE UNTIL SUN NT.

PRIOR TO SUN NT...THE WEATHER WILL REMAIN UNSETTLED. THE MAIN COLD
FRONTAL BOUNDARY IS STILL WAY BACK ACROSS IA AND MO AND IS NEARLY
STATIONARY AS THE ASSOCIATED SFC FRONT IS PARALLEL TO THE UPPER FLOW.

THE ATMOSPHERE IS QUITE MOIST AND UNSTABLE BUT UNTIL LATE TOMORROW
AFTERNOON...SUBSTANTIAL DYNAMICS WHICH SHOULD SUPPORT LIKELY
POPS...IS NOT IN THE EQUATION. THEREFORE...WILL INCLUDE POPS MAINLY
IN THE 40-50 POP RANGE FOR TONIGHT AND SAT AS WELL.

AS THE TROUGH AXIS MOVES EASTWARD...THE COLD FRONT WILL GAIN SOME
EASTWARD MOMENTUM AND WILL PUSH ACROSS THE MID STATE LATE SAT NT.
SO...WILL INCLUDE POPS IN THE LIKELY TO CATEGORICAL RANGE FOR SAT
NT. GIVEN THE EXACT TIMING UNCERTAINTY...WILL NEED TO CONTINUE POPS
INTO SUNDAY MORNING AS WELL.

AS FOR SVR POTENTIAL...STRONG FORCING ALONG AND AHEAD OF THE
BOUNDARY WILL COINCIDE WITH A NEARLY 50KT LLJ. THUS...SVR TSTMS
COULD OCCUR SAT NT ACROSS THE AREA. OF AN EVEN GREATER
LIKLIHOOD...HEAVY RAINFALL WITH THIS FRONTAL PASSAGE WILL BE
POSSIBLE SAT NT AS WELL.

IN THE EXT FCST...DRIER AIR AND SEASONAL TEMPS WILL MOVE IN BEHIND
THE FROPA. ANOTHER COLD FRONT WILL BRING A CHANCE OF SHOWERS AND
ISOL TSTMS TO MIDDLE TN THU NT AND FRI.

&&

.PRELIMINARY POINT TEMPS/POPS...
NASHVILLE    71  85  67  75 /  50  50  80  50
CLARKSVILLE  73  83  63  72 /  60  60  80  40
CROSSVILLE   67  79  65  71 /  50  50  60  70

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

21
Hazardous weather outlook, Sep 22, 5:30 AM CDT, 14 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CDT FRI SEP 22 2006

TNZ005>011-022>034-056>066-075-077>080-093>095-231030-
BEDFORD-BENTON-CANNON-CHEATHAM-CLAY-COFFEE-CUMBERLAND-DAVIDSON-
DEKALB-DICKSON-FENTRESS-GILES-GRUNDY-HICKMAN-HOUSTON-HUMPHREYS-
JACKSON-LAWRENCE-LEWIS-MACON-MARSHALL-MAURY-MONTGOMERY-OVERTON-PERRY-
PICKETT-PUTNAM-ROBERTSON-RUTHERFORD-SMITH-STEWART-SUMNER-TROUSDALE-
VAN BUREN-WARREN-WAYNE-WHITE-WILLIAMSON-WILSON-
530 AM CDT FRI SEP 22 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT
SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS MIDDLE TENNESSEE
TODAY AND TONIGHT. A FEW STORMS MAY BE SEVERE...WITH DAMAGING
WINDS AND LARGE HAIL...ESPECIALLY IN AREAS WEST OF INTERSTATE
65. ISOLATED TORNADOES ARE ALSO POSSIBLE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

AN APPROACHING COLD FRONT WILL PRODUCE SCATTERED THUNDERSTORMS
IN MIDDLE TENNESSEE ON SATURDAY. THUNDERSTORMS WILL BECOME
NUMEROUS SATURDAY NIGHT AND EARLY SUNDAY...AS THE FRONT SWEEPS
THROUGH. SOME STORMS COULD BECOME SEVERE...WITH DAMAGING WINDS
...LARGE HAIL...AND ISOLATED TORNADOES.

ALTHOUGH LATE SEPTEMBER IS NOT CONSIDERED A PEAK PERIOD FOR
SEVERE WEATHER IN MIDDLE TENNESSEE...YOU SHOULD REMEMBER THAT
TORNADOES HAVE OCCURRED DURING EVERY MONTH OF THE YEAR. SO...
KEEP INFORMED ABOUT THE WEATHER OVER THE NEXT SEVERAL
DAYS. LISTEN FOR ANY SEVERE WEATHER WATCHES OR WARNINGS THAT
MIGHT BE ISSUED...AND BE READY TO SEEK SAFE SHELTER IF A SEVERE
WEATHER WARNING IS ISSUED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION COULD BE REQUIRED AT ANY POINT DURING THE
NEXT SEVERAL DAYS...UNTIL THE COLD FRONT PASSES ON SUNDAY.

19

In the hours before

Special weather statement, Sep 22, 6:36 PM CDT, 1 hour 42 minutes before
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Special weather statement, Sep 22, 7:30 PM CDT, 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
730 PM CDT FRI SEP 22 2006

TNZ005-230115-
STEWART-
730 PM CDT FRI SEP 22 2006

A LARGE SEVERE THUNDERSTORM IS PRESENTLY LOCATED ABOUT 30 MILES
WEST OF STEWARD COUNTY...AND IS MOVING EAST AROUND 35 MPH.
THIS STORM IS MOVING ALONG A WARM FRONT THAT IS DRAPED ALONG
THE KENTUCKY...TENNESSEE BORDER. THERE IS A GOOD CHANCE THIS
STORM WILL ENTER WESTERN STEWART COUNTY BY 815 PM. IF CURRENT
TRENDS CONTINUE...THE STORM WILL BE WEAKER ONCE IT GETS TO STEWART
COUNTY...BUT STILL COULD PRODUCE DAMAGING WINDS AND LARGE HAIL.

IF YOU LIVE IN STEWART COUNTY...LISTEN TO LATEST WEATHER INFORMATION
BY WAY OF NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION.

THIS STORM HAS PRODUCED SEVERE WEATHER IN PARTS OF WESTERN
TENNESSEE AND EASTERN ARKANSAS. SEEK SHELTER WHEN WARNINGS ARE
ISSUED.

BOYD
Special weather statement, Sep 22, 7:55 PM CDT, 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
755 PM CDT FRI SEP 22 2006

TNZ005-022-023-230115-
BENTON-HOUSTON-STEWART-
755 PM CDT FRI SEP 22 2006

THE NATIONAL WEATHER SERVICE IN PADUCAH KENTUCKY HAS ISSUED A
TORNADO WARNING FOR CALLOWAY COUNTY IN WESTERN KENTUCKY. CALLOWAY
COUNTY IS ADJACENT TO STEWART COUNTY.

AT THE NATIONAL WEATHER SERVICE OFFICE IN NASHVILLE WE ARE
MONITORING THIS STORM CLOSELY. A WARNING MAY BE NEEDED FOR
STEWART COUNTY DURING THE NEXT HALF HOUR.

NOW IS THE TIME TO DECIDE WHERE YOU AND YOUR FAMILY WILL GO...
IF A WARNING IS ISSUED. SEEK SHELTER IN A BASEMENT. IF YOU
DONT HAVE A BASEMENT...GO TO AN INTERIOR CLOSET...IN THE CENTER OF
THE HOUSE.

BOYD

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 22, 8:43 PM CDTTornado WarningOHXStewart32 min
Sep 22, 10:49 PM CDTSevere Thunderstorm WarningOHXStewart56 min
Sep 22, 11:21 PM CDTSevere Thunderstorm WarningOHXMontgomery39 min
Sep 23, 12:46 AM CDTSevere Thunderstorm WarningOHXStewart44 min
Sep 23, 12:46 AM CDTSevere Thunderstorm WarningOHXStewart44 min
Sep 23, 3:06 AM CDTSevere Thunderstorm WarningOHXStewart24 min
Sep 23, 3:44 AM CDTSevere Thunderstorm WarningOHXMontgomery31 min
Sep 23, 4:00 AM CDTTornado WarningOHXMontgomery14 min
Sep 23, 4:01 AM CDTFlash Flood WatchOHXBenton, Cannon, Cheatham, Clay, Cumberland, Davidson and 23 more23 hr
Sep 23, 4:05 AM CDTTornado WarningOHXCheatham, Robertson25 min
Sep 23, 4:16 AM CDTTornado WarningOHXRobertson29 min
Sep 23, 4:24 AM CDTSevere Thunderstorm WarningOHXRobertson36 min
Sep 23, 4:37 AM CDTTornado WarningOHXSumner23 min
Sep 23, 4:43 AM CDTSevere Thunderstorm WarningOHXSumner32 min
Sep 23, 5:01 AM CDTTornado WarningOHXSumner29 min
Sep 23, 5:16 AM CDTSevere Thunderstorm WarningOHXWilson44 min
Sep 23, 5:26 AM CDTSevere Thunderstorm WarningOHXMacon, Trousdale49 min
Sep 23, 5:51 AM CDTTornado WarningOHXSmith24 min
Sep 23, 6:12 AM CDTSevere Thunderstorm WarningOHXJackson33 min
Sep 23, 6:57 AM CDTFlash Flood WarningOHXStewart2 hr
Sep 23, 2:35 PM CDTSevere Thunderstorm WarningOHXRobertson25 min
Sep 23, 3:16 PM CDTSevere Thunderstorm WarningOHXClay, Jackson, Macon, Smith29 min
Sep 23, 3:32 PM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Robertson, Sumner28 min
Sep 23, 4:07 PM CDTSevere Thunderstorm WarningOHXDavidson, Williamson, Wilson23 min
Sep 23, 4:44 PM CDTSevere Thunderstorm WarningOHXRutherford31 min
Sep 23, 5:02 PM CDTSevere Thunderstorm WarningOHXBedford, Cannon, Coffee, Rutherford28 min
Sep 23, 5:02 PM CDTSevere Thunderstorm WarningOHXVan Buren, Warren, White43 min
Sep 23, 5:40 PM CDTSevere Thunderstorm WarningOHXWarren, White35 min
Sep 23, 5:45 PM CDTSevere Thunderstorm WarningOHXDeKalb30 min
Sep 23, 5:47 PM CDTSevere Thunderstorm WarningOHXFentress13 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2006Every 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.