Alert archive / Tennessee / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 34, NWS Nashville, TN

March 30, 2005Montgomery County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 30, 2005, 11:43 PM CST for Montgomery County, Tennessee. It was in force for 32 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: Mar 30, 2005, 11:43 PM CST (05:43 UTC)
Expired: Mar 31, 2005, 12:15 AM CST
In force: 32 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Montgomery County, TN

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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 5.7 hours before the alert went out and 79 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: 1 J/kg
Mixed-layer CIN: -410 J/kg
Mixed-layer LCL: 1599 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 187 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOHX 310543
SVROHX
TNC125-310615-
/O.NEW.KOHX.SV.W.0034.050331T0543Z-050331T0615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1143 PM CST WED MAR 30 2005

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONTGOMERY COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF CLARKSVILLE

* UNTIL 1215 AM CST

* AT 1140 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 17
  MILES SOUTHWEST OF CLARKSVILLE...OR ABOUT 10 MILES NORTHEAST OF
  ERIN...AND MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CLARKSVILLE BY MIDNIGHT CST

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS
INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

LAT...LON 3665 8712 3655 8714 3648 8712 3647 8714
      3636 8756 3637 8759 3653 8761 3655 8759
      3665 8729

$$
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 Mar 30, 8:30 PM CST, 3 hours 13 minutes earlier.

Area forecast discussion, Mar 30, 8:30 PM CST, 3 hours 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
830 PM CST WED MAR 30 2005

.DISCUSSION...
NO FORECAST UPDATES NEEDED FOR NOW...WILL UPDATE LATER BASED ON
RADAR TRENDS AND ANY WATCHES THAT MAY BE ISSUED. EVENING SURFACE MAP
SHOWS COLD FRONT PUSHING INTO EAST MO AND AR WITH THUNDERSTORMS
DEVELOPING AHEAD OF IT IN AXIS OF HIGHER CAPES AND STRONG WARM MOIST
ADVECTION. SCATTERED CONVECTION ALSO POPPING UP OVER CENTRAL AND
NORTH MS.

EVENING SOUNDING FROM BNA SHOWED A DRY ATMOSPHERE WITH CAPPING
INVERSION. AGREE WITH SPC THAT SUBSTANTIAL SOUTHERLY FLOW AND
CONVERGENCE AHEAD OF FRONT WILL BE ENOUGH TO CONTINUE CONVECTIVE
INITIATION AS COLD FRONT PUSHES INTO WEST AND MID TN...ALTHOUGH
CONDITIONS WILL BECOME LESS FAVORABLE AS THE ACTIVITY MOVES EAST.
ROUGHLY ESTIMATING...WE WILL SEE A BROKEN LINE OF SHOWERS/STORMS
BETWEEN 10 PM AND 2 AM FAR WEST COUNTIES...MIDNIGHT-3AM NASHVILLE
AREA...AND WHATEVER IS LEFT OVER WILL AFFECT THE PLATEAU 3AM TO 7AM.

THE HIGHEST CHANCES FOR SEVERE WILL BE IN OUR WESTERN
COUNTIES...THEN SEVERE CHANCES WILL GRADUALLY SHRINK TOWARD SOUTH AS
ACTIVITY MOVES INTO RELATIVELY DRIER AND MORE STABLE AIR.

&&

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

&&

13

Hazardous weather outlook, Mar 30, 9:54 PM CST, 1 hour 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
954 PM CST WED MAR 30 2005

TNZ005>011-022>034-056>066-075-077>080-093>095-311130-
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-
954 PM CST WED MAR 30 2005

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 400 AM CST FOR
SOUTHERN MIDDLE TENNESSEE...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...REST OF TONIGHT
A NEARLY SOLID BUT NARROW LINE OF STRONG TO SEVERE THUNDERSTORMS OVER
WEST TENNESSEE WILL MOVE EAST...REACHING THE TENNESSEE RIVER
SHORTLY AFTER 1100 PM. THE LINE OF STORMS WILL CONTINUE ITS EAST
MOVEMENT ACROSS THE REMAINDER OF THE MID STATE OVERNIGHT. AT
THE SAME TIME ADDITIONAL THUNDERSTORMS TO OUR SOUTH OVER ALABAMA WILL
BE MOVING NORTHEAST AND MAY POISE A THREAT LATER TONIGHT OVER
SOUTHERN SECTIONS OF THE MID STATE.

COMPUTER FORECAST MODELS SHOW THAT THE ATMOSPHERE WILL STABILIZE
A LITTLE OVERNIGHT...BUT WIND FIELDS WILL REMAIN STRONG. IT IS
POSSIBLE THIS LINE OF STORMS MAY WEAKEN AS IT MOVES INTO THE
EAST PART OF THE MID STATE WELL AFTER MIDNIGHT.

ANY SEVERE WEATHER THAT OCCURS SHOULD BE IN THE FORM OF LARGE HAIL
AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SPOTTERS AND EMERGENCY MANAGERS IS REQUESTED TONIGHT.

STEIGERWALDT

In the hours before

Local storm report, Mar 30, 11:06 PM CST, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1106 PM CST WED MAR 30 2005

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

1055 PM     HAIL             6 S LAWRENCEBURG        35.16N 87.34W
03/30/2005  1.75 INCH        LAWRENCE           TN   TRAINED SPOTTER

            OCCURRED AT LEOMA

&&

STEIGERWALDT

Local storm report, Mar 30, 11:13 PM CST, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1113 PM CST WED MAR 30 2005

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

1100 PM     HAIL             5 E LAWRENCEBURG        35.25N 87.25W
03/30/2005  1.00 INCH        LAWRENCE           TN   TRAINED SPOTTER

            OCCURRED AT NEW PROSPECT

1100 PM     HAIL             LAWRENCEBURG            35.25N 87.34W
03/30/2005  0.88 INCH        LAWRENCE           TN   TRAINED SPOTTER

&&

STEIGERWALDT

Local storm report, Mar 30, 11:35 PM CST, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE, TN
1135 PM CST WED MAR 30 2005

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1124 PM    NORTH OF COLUMBIA         TN   SMALL LIMBS DOWN
03/30/05   MAURY                          REPORTED BY NWS TRAINED
                                          SPOTTER.

1124 PM    NORTH OF COLUMBIA         TN   0.88 INCH HAIL 03/30/05
03/30/05   MAURY                          REPORTED BY NWS TRAINED
                                          SPOTTER.

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 10:42 PM CST	Severe Thunderstorm Warning	OHX	Giles, Lawrence	48 min
Mar 30, 11:16 PM CST	Severe Thunderstorm Warning	OHX	Williamson	29 min
Mar 30, 11:26 PM CST	Severe Thunderstorm Warning	OHX	Marshall, Rutherford	34 min
Mar 30, 11:32 PM CST	Severe Thunderstorm Warning	OHX	Davidson, Wilson	28 min
Mar 30, 11:53 PM CST	Severe Thunderstorm Warning	OHX	Sumner	37 min
Mar 31, 12:12 AM CST	Severe Thunderstorm Warning	OHX	Macon	33 min
Mar 31, 12:21 AM CST	Severe Thunderstorm Warning	OHX	Coffee, Warren	24 min
Mar 31, 12:45 AM CST	Severe Thunderstorm Warning	OHX	Warren, White	30 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2005 Every severe thunderstorm warning in 2005

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.