Alert archive / Tennessee / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 32, NWS Nashville, TN

February 6, 2008Overton County, Putnam County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Feb 6, 2008, 4:20 AM CST for Overton County, Putnam County, Tennessee. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Feb 6, 2008, 4:20 AM CST (10:20 UTC)
Expired: Feb 6, 2008, 4:45 AM CST
In force: 25 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Overton County, TN, Putnam County, TN

The radar

The Nashville radar (KOHX), 115 km from the middle of the area, began a volume at 10:21 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 6, 4:06 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 10.3 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-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: 706 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 812 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 300 m²/s²
0-3 km storm-relative helicity: 362 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KOHX 061020
SVROHX
TNC133-141-061045-
/O.NEW.KOHX.SV.W.0032.080206T1020Z-080206T1045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
420 AM CST WED FEB 6 2008

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OVERTON COUNTY IN TENNESSEE...
  THIS INCLUDES THE CITY OF LIVINGSTON...
  PUTNAM COUNTY IN TENNESSEE...
  THIS INCLUDES THE CITY OF COOKEVILLE...

* UNTIL 445 AM CST

* AT 419 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 10 MILES EAST OF LIVINGSTON TO COOKEVILLE...OR ALONG A LINE
  EXTENDING FROM 9 MILES SOUTH OF BYRDSTOWN TO COOKEVILLE...AND
  MOVING EAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MONTEREY BY 435 AM CST...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CST WEDNESDAY MORNING
FOR CENTRAL TENNESSEE. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
1000 AM CST WEDNESDAY MORNING FOR CENTRAL TENNESSEE.

LAT...LON 3641 8511 3622 8509 3610 8518 3610 8523
      3599 8526 3601 8532 3604 8531 3609 8547
      3609 8554 3603 8561 3652 8522
TIME...MOT...LOC 1020Z 279DEG 32KT 3644 8514 3610 8543

$$

04

1 follow-up statement

000 
WWUS54 KOHX 061031
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
430 AM CST WED FEB 6 2008

TNC133-141-061045-
/O.CON.KOHX.SV.W.0032.000000T0000Z-080206T1045Z/
PUTNAM TN-OVERTON TN-
430 AM CST WED FEB 6 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM CST
FOR SOUTHEASTERN OVERTON AND EASTERN PUTNAM COUNTIES...

AT 423 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM 10 MILES EAST OF LIVINGSTON TO 8 MILES SOUTHEAST OF 
COOKEVILLE...MOVING EAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  MONTEREY BY 435 AM CST...

A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 1000 AM CST WEDNESDAY 
MORNING FOR CENTRAL TENNESSEE.

LAT...LON 3641 8511 3622 8509 3610 8518 3610 8523
      3599 8526 3601 8532 3604 8531 3609 8547
      3609 8554 3603 8561 3652 8522
TIME...MOT...LOC 1030Z 279DEG 32KT 3642 8512 3608 8533

$$

13

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 Feb 6, 1:52 AM CST, 2 hours 28 minutes earlier.

Area forecast discussion, Feb 6, 1:52 AM CST, 2 hours 28 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
152 AM CST WED FEB 6 2008

.DISCUSSION...
SEVERE WEATHER EVENT EARLY THIS MORNING. SGFNT INSTABILITY...
STRONG 0-3 KM SHEAR...STRONG COLD FRONT PROVIDING ADDITIONAL LIFT.
COLD FRONT HAS PASSED MEMPHIS...INSTABILITY LINE IS WELL AHEAD OF
THE FRONT. COLD FRONT WILL LIKELY PASS BNA AROUND 7-8 AM AND
AROUND NOON FOR CSV. RAIN TAPERING OFF THIS AFTERNOON FROM THE
WEST.

TEMPS DROPPING BACK INTO THE 30S TO 50S RANGE AFTER FRONTAL PASSAGE.
WEAK H5 WAVE PASSES THROUGH THE OHIO VALLEY THU NGT BUT NO SGFNT
WX FOR THIS AREA EXPECTED. SLY FLOW RETURNS ON FRI AS ANOTHER COLD
FRONT APPROACHES THE MIDSTATE FRI EVE. THE ASSOCD UPPER LEVEL WAVE
DEEPENS THE GREAT LAKES TROUGH AND OPENS THE FLOOD GATES FOR PENT
UP COLD AIR IN WEST CNTRL CANADA. AS A RESULT...ARCTIC FRONT ROARS
SEWD THROOUGH THE OHIO VALLEY ON SAT PM AND THROUGH THE MIDSTATE
SAT EVE. FROM FRI MIDNIGHT TO SAT MIDNIGHT TEMPS IN THE BNDRY
LAYER DROPS ALMOST 30F.

AREA STARTS TO RECOVER TEMPERATURE-WISE AS SOUTH FLOW RETURNS ON
MON. BNDRY LAYER TEMPS MOVE INTO ABOVE ZERO TERRITORY LATE SUN NGT
AS A WEAK COLD FRONT APPROACHES FROM THE WEST. CHANCE OF RAIN RE-
ENTERS THE FCST MON NGT AS THE COLD FRONT DRAWS CLOSER.

TEMP AND POP GUIDANCE WAS IN DECENT AGREEMENT AND NO SGFNT
DEPARTURES PLANNED.

&&

.PRELIMINARY POINT TEMPS/POPS...
NASHVILLE      60  33  46  34 /  70   0  10  10
CLARKSVILLE    55  31  43  32 /  50  10  10  10
CROSSVILLE     61  31  42  29 /  80  10  10  10
COLUMBIA       60  32  46  33 /  60   0  10  10
LAWRENCEBURG   60  31  48  32 /  60   0  10  10
WAVERLY        55  31  44  32 /  50  10  10  10

&&

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

JLM

Hazardous weather outlook, Feb 5, 5:10 AM CST, 23 hours 10 minutes before

HAZARDOUS WEATHER OUTLOOK...COR EXPIRATION TIME
NATIONAL WEATHER SERVICE NASHVILLE TN
510 AM CST TUE FEB 5 2008

TNZ005>011-022>034-056>066-075-077>080-093>095-061130-
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-DEKALB-WHITE-CUMBERLAND-BEDFORD-COFFEE-WARREN-
GRUNDY-VAN BUREN-WAYNE-LAWRENCE-GILES-
INCLUDING THE CITIES OF...DOVER...CLARKSVILLE...SPRINGFIELD...
GALLATIN...LAFAYETTE...CELINA...BYRDSTOWN...CAMDEN...ERIN...
WAVERLY...DICKSON...ASHLAND CITY...KINGSTON SPRINGS...NASHVILLE...
LEBANON...MOUNT JULIET...HARTSVILLE...CARTHAGE...GAINESBORO...
COOKEVILLE...LIVINGSTON...JAMESTOWN...ALLARDT...LINDEN...
LOBELVILLE...CENTERVILLE...HOHENWALD...FRANKLIN...BRENTWOOD...
COLUMBIA...LEWISBURG...MURFREESBORO...WOODBURY...SMITHVILLE...
SPARTA...CROSSVILLE...FAIRFIELD GLADE...SHELBYVILLE...TULLAHOMA...
MANCHESTER...MCMINNVILLE...TRACY CITY...ALTAMONT...COALMONT...
SPENCER...WAYNESBORO...LAWRENCEBURG...PULASKI
506 AM CST TUE FEB 5 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THERE IS A MODERATE RISK FOR SEVERE THUNDERSTORMS IN WEST MIDDLE
TENNESSEE TONIGHT.

WARM MOIST AIR WILL BE IN PLACE AS A STRONG COLD FRONT MOVES INTO
MIDDLE TENNESSEE TONIGHT. THE ATMOSPHERE WILL BE SUFFICIENTLY
UNSTABLE FOR SEVERE WEATHER TO DEVELOP. STORMS WILL LIKELY PRODUCE
DAMAGING WINDS...HEAVY RAINFALL AND ISOLATED TORNADOES.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

ISOLATED STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE IN THE
CUMBERLAND PLATEAU REGION WEDNESDAY MORNING...AS THE STRONG COLD
FRONT PUSHES EAST.

.SPOTTER INFORMATION STATEMENT...

SPOTTER AND EMERGENCY MANAGER ACTIVATION MAY BE NEEDED THIS EVENING.

04

In the hours before

Local storm report, Feb 5, 11:24 PM CST, 4 hours 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1124 PM CST TUE FEB 05 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1004 PM     TORNADO          7 E GALLATIN            36.38N 86.33W
02/05/2008                   SUMNER             TN   NWS EMPLOYEE

            POST OFFICE DESTROYED IN CASTILLIAN SPRINGS

&&

21

Local storm report, Feb 5, 11:40 PM CST, 4 hours 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1140 PM CST TUE FEB 05 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1004 PM     TORNADO          7 E GALLATIN            36.38N 86.33W
02/05/2008                   SUMNER             TN   NWS EMPLOYEE

            *** 2 FATAL, 5 INJ *** IN BETH PAGE AND CASTALIAN SPRINGS
            AREA...NUMEROUS INJURIES...PEOPLE TRAPPED IN
            HOMES...PEOPLE MISSING. TWO FATALITIES THUS FAR.

&&

21

Local storm report, Feb 6, 12:11 AM CST, 4 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1211 AM CST WED FEB 06 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1211 AM     HAIL             DICKSON                 36.08N 87.38W
02/06/2008  E1.00 INCH       DICKSON            TN   AMATEUR RADIO

            LARGE HAIL IN DOWNTOWN DICKSON

&&

SHERRON

Local storm report, Feb 6, 12:32 AM CST, 3 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1232 AM CST WED FEB 06 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0810 PM     TORNADO          7 S LINDEN              35.51N 87.84W
02/05/2008                   PERRY              TN   LAW ENFORCEMENT

            NUMEROUS TREES DOWN ACROSS THE SOUTHERN PART OF COUNTY

&&

21

Local storm report, Feb 6, 1:30 AM CST, 2 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
130 AM CST WED FEB 06 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1025 PM     TORNADO          5 NNW LAFAYETTE         36.59N 86.07W
02/05/2008                   MACON              TN   LAW ENFORCEMENT

            SEVERAL HOMES DAMAGED AND TRALIERS BLOWN OVER. NUMEROUS
            TREES DOWN ACROSS NW PORTIONS OF COUNTY.

&&

21

Local storm report, Feb 6, 1:34 AM CST, 2 hours 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
134 AM CST WED FEB 06 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1012 PM     TORNADO          5 NW HARTSVILLE         36.44N 86.22W
02/05/2008                   TROUSDALE          TN   LAW ENFORCEMENT

            NEAR HWY 141...TRAILERS DESTROYED AND HOMES DAMAGED.

&&

21

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 5, 7:30 PM CST	Tornado Warning	OHX	Benton	30 min
Feb 5, 7:39 PM CST	Tornado Warning	OHX	Perry, Wayne	36 min
Feb 5, 7:55 PM CST	Tornado Warning	OHX	Benton, Houston, Humphreys, Stewart	35 min
Feb 5, 8:10 PM CST	Tornado Warning	OHX	Hickman, Lewis, Perry, Wayne	35 min
Feb 5, 8:29 PM CST	Tornado Warning	OHX	Houston, Humphreys, Montgomery, Stewart	31 min
Feb 5, 8:35 PM CST	Tornado Warning	OHX	Dickson, Hickman, Lewis, Maury, Williamson	25 min
Feb 5, 8:42 PM CST	Tornado Warning	OHX	Benton, Humphreys	33 min
Feb 5, 8:57 PM CST	Tornado Warning	OHX	Cheatham, Davidson, Dickson, Hickman, Maury, Williamson	33 min
Feb 5, 9:17 PM CST	Tornado Warning	OHX	Cheatham, Davidson, Williamson	28 min
Feb 5, 9:40 PM CST	Tornado Warning	OHX	Davidson, Sumner, Wilson	35 min
Feb 5, 10:06 PM CST	Tornado Warning	OHX	Macon, Sumner, Trousdale	39 min
Feb 5, 10:48 PM CST	Tornado Warning	OHX	Benton	27 min
Feb 5, 11:10 PM CST	Tornado Warning	OHX	Benton, Houston, Humphreys	35 min
Feb 5, 11:15 PM CST	Tornado Warning	OHX	Humphreys, Perry	30 min
Feb 5, 11:23 PM CST	Severe Thunderstorm Warning	OHX	Stewart	37 min
Feb 5, 11:40 PM CST	Tornado Warning	OHX	Hickman, Humphreys	35 min
Feb 5, 11:56 PM CST	Severe Thunderstorm Warning	OHX	Montgomery	34 min
Feb 6, 12:02 AM CST	Tornado Warning	OHX	Dickson	28 min
Feb 6, 12:06 AM CST	Tornado Warning	OHX	Montgomery	24 min
Feb 6, 12:19 AM CST	Tornado Warning	OHX	Cheatham, Davidson	26 min
Feb 6, 12:32 AM CST	Tornado Warning	OHX	Perry, Wayne	28 min
Feb 6, 12:47 AM CST	Tornado Warning	OHX	Davidson	21 min
Feb 6, 1:03 AM CST	Tornado Warning	OHX	Hickman, Lewis	27 min
Feb 6, 1:05 AM CST	Tornado Warning	OHX	Sumner	25 min
Feb 6, 1:21 AM CST	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Williamson	24 min
Feb 6, 1:27 AM CST	Tornado Warning	OHX	Maury, Williamson	33 min
Feb 6, 1:32 AM CST	Tornado Warning	OHX	Sumner	13 min
Feb 6, 1:53 AM CST	Tornado Warning	OHX	Davidson, Williamson	37 min
Feb 6, 1:59 AM CST	Tornado Warning	OHX	Bedford, Marshall, Rutherford	31 min
Feb 6, 2:16 AM CST	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Marshall, Maury	29 min
Feb 6, 2:47 AM CST	Severe Thunderstorm Warning	OHX	Rutherford, Wilson	28 min
Feb 6, 3:38 AM CST	Severe Thunderstorm Warning	OHX	Cannon, Coffee, DeKalb, Jackson, Overton, Putnam and 1 more	37 min
Feb 6, 5:02 AM CST	Severe Thunderstorm Warning	OHX	Grundy	28 min
Feb 6, 11:59 AM CST	Lake Wind Advisory	OHX	Bedford, Benton, Cannon, Cheatham, Clay, Coffee and 33 more	6 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2008 Every severe thunderstorm warning in 2008

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.