Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 460, NWS Nashville, TN

August 22, 2003Benton County, Humphreys County, Perry County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 22, 2003, 9:39 PM CDT for Benton County, Humphreys County, Perry County, Tennessee. It was in force for 51 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: Aug 22, 2003, 9:39 PM CDT (02:39 UTC)
Expired: Aug 22, 2003, 10:30 PM CDT
In force: 51 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Benton County, TN, Humphreys County, TN, Perry 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 watch it was issued in

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

Issued	Product	Office	Lasted
Aug 22, 5:35 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.7 hours before the alert went out and 128 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: 2889 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1273 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 35 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 230239
SVRBNA
TNC005-085-135-230330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
935 PM CDT FRI AUG 22 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BENTON COUNTY IN TENNESSEE
  HUMPHREYS COUNTY IN TENNESSEE
  PERRY COUNTY IN TENNESSEE

* UNTIL 1030 PM CDT

* AT 930 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES EAST OF NEW JOHNSONVILLE...OR 8 MILES
  SOUTHWEST OF WAVERLY...MOVING SOUTHWEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  IN SOUTHEASTERN BENTON COUNTY BY 940 PM CDT
  IN WESTERN PERRY COUNTY BY 1010 PM CDT

SEVERE THUNDERSTORM WINDS CAN BE AS DESTRUCTIVE AS A TORNADO. FOR
YOUR SAFETY, GO TO A SAFE PLACE IMMEDIATELY.

EXCESSIVE LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IF
POSSIBLE. STAY AWAY FROM WINDOWS AND DOORS, AND AVOID USING
ELECTRICAL APPLIANCES OR TELEPHONES UNLESS IT IS AN EMERGENCY.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING.

LAT...LON 3605 8776 3612 8803 3558 8838 3546 8796

$$

04

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 Aug 22, 1:10 PM CDT, 8 hours 29 minutes earlier.

Area forecast discussion, Aug 22, 1:10 PM CDT, 8 hours 29 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
110 PM CDT FRI AUG 22 2003

SURFACE BOUNDARY CONTINUES TO SLIP SOUTHWARD AND AT MID-AFTERNOON
STRETCHED ACROSS SOUTHERN INDIANA/ILLINOIS. NORTH WIND AND LOWER
DEWPOINTS WERE FOLLOWING THE PASSAGE OF THE FRONT. VERY LITTLE IN
THE WAY OF SHOWERS/TSTMS PRECEDING THE FRONT THIS AFTERNOON. SOME
CAPPING MAY BE TAKING PLACE AS SUBSIDENCE IS QUITE STRONG ALONG
WITH WARM 700 MB TEMPS.

AVN/NGM AGREE IN BRINGING BOUNDARY THROUGH WHILE ETA STALLS IT
ACROSS THE MID STATE ON SATURDAY. WARM UPPER LEVEL ANTICYCLONE
SPRAWLED ACROSS THE US CENTERED IN CENTRAL PLAINS TODAY. UPPER
RIDGE BUILDS EASTWARD OVER THE WEEKEND. THIS WILL KEEP TEMPS QUITE
WARM.

WILL GO WITH A 30 POP ACROSS THE BOARD FOR TONIGHT AS BOUNDARY GETS
CLOSER. WILL KEEP A 20 GOING OVER THE NORTH ON SATURDAY WITH A 30 POP
OVER THE SOUTH. WILL KEEP SUNDAY DRY FOR NOW BUT CANT RULE OUT
ISOLATED CONVECTION

PRELIMINARY NUMBERS:
NASHVILLE  72 90 67 92 69  321
CROSSVILLE 68 86 63 88 64  321

.BNA...NONE.

BOYD
01

Hazardous weather outlook, Aug 22, 5:00 PM CDT, 4 hours 39 minutes before

TNZ005>011-022>034-056>066-075>080-093>097-231100-

HAZARDOUS WEATHER OUTLOOK...CORRECTED SPOTTER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
500 PM CDT FRI AUG 22 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TONIGHT
A PREFRONTAL SURFACE TROUGH WAS DEVELOPING IN CENTRAL KENTUCKY THIS
AFTERNOON...ASSOCIATED WITH A FLARE UP OF THUNDERSTORMS. IN MIDDLE
TENNESSEE...THERE IS PLENTY OF HEAT AND MOISTURE AVAILABLE FOR STORM
DEVELOPMENT THIS EVENING...AS THE SYSTEM MOVES SOUTH. THUS ISOLATED
TO SCATTERED SEVERE THUNDERSTORMS ARE EXPECTED IN MIDDLE TENNESSEE...
ALONG AND NORTH OF A LINE FROM SOUTH METRO NASHVILLE INTO THE CENTRAL
CUMBERLAND PLATEAU. THE MAIN THREAT WITH THESE STORMS WILL BE
DAMAGING WINDS...AND ISOLATED STORMS COULD PRODUCE LARGE HAIL.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A WEAK COLD FRONT WILL ENTER MIDDLE TENNESSEE SATURDAY MORNING AND
MOVE SLOWLY SOUTHWARD. BY SUNDAY MORNING THE FRONT WILL BE LOCATED
SOUTH OF THE REGION. THERE IS A SMALL CHANCE OF LOCALLY SEVERE
THUNDERSTORMS...POSSIBLY PRODUCING DAMAGING WIND AND HAIL.
OTHERWISE...THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SPOTTERS AND EMERGENCY MANAGERS IS POSSIBLE THIS
EVENING.

04

In the hours before

Local storm report, Aug 22, 8:10 PM CDT, 1 hour 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0810 PM CDT FRI AUG 22 2003

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

0730 PM    2 E HENDERSONVILLE        TN   55 MPH TSTORM WIND
08/22/03   SUMNER                         SPOTTER

BOYD

Local storm report, Aug 22, 8:16 PM CDT, 1 hour 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0816 PM CDT FRI AUG 22 2003

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

0750 PM    5 ESE NASHVILLE           TN   60 MPH TSTORM WIND
08/22/03   DAVIDSON                       SPOTTER

BOYD

Local storm report, Aug 22, 8:32 PM CDT, 1 hour 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0832 PM CDT FRI AUG 22 2003

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

0750 PM    6 ENE MOUNT JULIET        TN   WIND DAMAGE
08/22/03   WILSON                         LARGE TREE DOWN HIWAY 70
                                          AND 109
                                          SPOTTER

BOYD

Local storm report, Aug 22, 9:04 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0904 PM CDT FRI AUG 22 2003

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

0804 PM    MURFREESBORO              TN   58 MPH WIND GUST
08/22/03   RUTHERFORD                     OCCURRED AT MURFREESBORO
                                          AIRPORT...REPORTED BY
                                          AIRPORT EMPLOYEE

0802 PM    NASHVILLE                 TN   WIND DAMAGE
08/22/03   DAVIDSON                       TREES DOWN AT I-440 AND
                                          CLAYTON AVE...REPORTED BY
                                          SPOTTER

0730 PM    HENDERSONVILLE            TN   65 MPH WIND GUST
08/22/03   SUMNER                         REPORTED BY SPOTTER

0726 PM    7 N GALLATIN              TN   WIND DAMAGE
08/22/03   SUMNER                         TREES DOWN IN THE GRABALL
                                          COMMUNITY...REPORTED BY
                                          SPOTTER

0715 PM    GALLATIN                  TN   WIND DAMAGE
08/22/03   SUMNER                         NUMEROUS TREES AND POWER
                                          LINES DOWN BETWEEN GALLATIN
                                          AND PORTLAND...REPORTED BY
                                          SPOTTER

0714 PM    9 SE CROSSVILLE           TN   WIND DAMAGE
08/22/03   CUMBERLAND                     TREE LIMBS DOWN ON HIGHWAY
                                          68 NEAR GRASSY
                                          COVE...REPORTED BY SPOTTER

STEIGERWALDT

Local storm report, Aug 22, 9:20 PM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE, TN
920 PM CDT FRI AUG 22 2003

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

0900 PM    UNIONVILLE                TN   FLOODING
08/22/03   BEDFORD                        MINOR STREET FLOODING.
                                          REPORTED BY NWS TRAINED SPOTTER

JLM

Local storm report, Aug 22, 9:33 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0933 PM CDT FRI AUG 22 2003

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

0822 PM    6 S MURFREESBORO          TN   WIND DAMAGE
08/22/03   RUTHERFORD                     TREE DOWN ON COUNTY FARM
                                          ROAD...REPORTED BY SHERIFF

0808 PM    8 NE MURFREESBORO         TN   WIND DAMAGE
08/22/03   RUTHERFORD                     TREE DOWN IN LASCASSAS
                                          AREA...REPORTED BY SHERIFF

0805 PM    FRANKLIN                  TN   WIND DAMAGE
08/22/03   WILLIAMSON                     NUMEROUS TREES DOWN
                                          COUNTYWIDE...REPORTS
                                          RECEIVED FROM 805 PM
                                          THROUGH 820 PM...REPORTED
                                          BY SHERIFF

0721 PM    GAINESBORO                TN   WIND DAMAGE
08/22/03   JACKSON                        NUMEROUS TREES DOWN
                                          COUNTYWIDE...WITH REPORTS
                                          RECEIVED FROM 721 PM
                                          THROUGH 745 PM...REPORTED
                                          BY COUNTY 911

STEIGERWALDT

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 22, 7:21 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Smith	39 min
Aug 22, 7:23 PM CDT	Tornado Warning	OHX	Robertson, Sumner	37 min
Aug 22, 7:27 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Sumner, Williamson, Wilson	48 min
Aug 22, 7:49 PM CDT	Severe Thunderstorm Warning	OHX	Davidson	41 min
Aug 22, 8:00 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Marshall, Maury, Rutherford, Williamson and 1 more	45 min
Aug 22, 8:25 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Warren	50 min
Aug 22, 8:45 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Giles, Lawrence, Lincoln, Marshall, Maury and 1 more	45 min
Aug 22, 8:57 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys	48 min
Aug 22, 9:02 PM CDT	Severe Thunderstorm Warning	OHX	Franklin	43 min
Aug 22, 9:30 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Lincoln	45 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2003 Every severe thunderstorm warning in 2003

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.