Alert archive / Tennessee / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 37, NWS Nashville, TN

March 31, 2005Coffee County, Warren County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 31, 2005, 12:21 AM CST for Coffee County, Warren County, Tennessee. It was in force for 24 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 31, 2005, 12:21 AM CST (06:21 UTC)
Expired: Mar 31, 2005, 12:45 AM CST
In force: 24 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Coffee County, TN, Warren County, TN

The radar

The Northeast Alabama radar (KHTX), 78 km from the middle of the area, began a volume at 06:23 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
Mar 30, 9:50 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 6.4 hours before the alert went out and 87 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 310621
SVROHX
TNC031-177-310645-
/O.NEW.KOHX.SV.W.0037.050331T0621Z-050331T0645Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1221 AM CST THU MAR 31 2005

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COFFEE COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF MANCHESTER
  WARREN COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF MCMINNVILLE

* UNTIL 1245 AM CST

* AT 1217 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR MANCHESTER...AND MOVING NORTHEAST AT 65 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MCMINNVILLE BY 1240 AM CST

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 3548 8617 3567 8597 3572 8599 3584 8589
      3585 8572 3580 8561 3555 8556 3554 8576
      3552 8581 3553 8586 3537 8603

$$
13

1 follow-up statement

000 
WWUS54 KOHX 310629
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
1229 AM CST THU MAR 31 2005

TNC031-177-310645-
/O.CON.KOHX.SV.W.0037.000000T0000Z-050331T0645Z/
WARREN TN-COFFEE TN-
1229 AM CST THU MAR 31 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 1245 AM CST FOR
EASTERN COFFEE AND WARREN COUNTIES...

AT 1227 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.
 THIS STORM WAS LOCATED NEAR MORRISON...OR ABOUT 10 MILES NORTHEAST
OF MANCHESTER...MOVING NORTHEAST AT 60 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MORRISON AND VIOLA BY 1230 AM CST
  MCMINNVILLE BY 1240 AM 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 DAMAGE TO PROPERTY.

LAT...LON 3548 8617 3567 8597 3572 8599 3584 8589
      3585 8572 3580 8561 3555 8556 3554 8576
      3552 8581 3553 8586 3537 8603

$$
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 51 minutes earlier.

Area forecast discussion, Mar 30, 8:30 PM CST, 3 hours 51 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, 2 hours 27 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, 1 hour 15 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, 1 hour 8 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, 46 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, 11:43 PM CST	Severe Thunderstorm Warning	OHX	Montgomery	32 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, 12:45 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; radar from the NEXRAD Level II archive.