Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 81, NWS Nashville, TN

April 29, 2003Houston County, Montgomery County, Stewart County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Apr 29, 2003, 9:29 PM CDT for Houston County, Montgomery County, Stewart County, Tennessee. It was in force for 61 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: Apr 29, 2003, 9:29 PM CDT (02:29 UTC)
Expired: Apr 29, 2003, 10:30 PM CDT
In force: 61 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Houston County, TN, Montgomery County, TN, Stewart 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, 2.5 hours before the alert went out and 105 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: 2956 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1150 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 30 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.

819 
WUUS54 KOHX 300229
SVRBNA
TNC083-125-161-300330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
929 PM CDT TUE APR 29 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HOUSTON COUNTY IN TENNESSEE
  MONTGOMERY COUNTY IN TENNESSEE
  STEWART COUNTY IN TENNESSEE

* UNTIL 1030 PM CDT

* AT 920 PM CDT...SEVERE THUNDERSTORMS WERE INDICATED BY NATIONAL 
  WEATHER SERVICE DOPPLER RADAR ABOUT 10 MILES WEST OF ERIN...ON
  THE STEWART...HOUSTON...COUNTY LINE...AND IN NORTHEAST STEWART
  COUNTY...ABOUT 13 MILES NORTHEAST OF DOVER. THESE STORMS WERE
  MOVING VERY SLOWLY TO THE EAST. ADDITIONAL THUNDERSTORMS WILL
  LIKELY DEVELOP OVER THESE COUNTIES BY 1030 PM...AND A FEW
  WILL LIKELY BECOME SEVERE. 
  
* THE SEVERE THUNDERSTORMS WILL AFFECT AREAS BETWEEN DOVER...
  CLARKSVILLE...AND ERIN BE 1030 PM CDT.
  
THE BIGGEST THREAT FROM THESE THUNDERSTORM WILL BE LARGE HAIL...TO 
PENNY SIZE OR LARGER. OTHER THUNDERSTORMS IN MIDDLE TENNESSEE 
PRODUCED HAIL TO NICKEL AND GOLFBALL SIZE EARLIER TONIGHT.
LARGE HAIL CAN CAUSE INJURY AND PROPERTY DAMAGE. TAKE SHELTER IN A STURDY
BUILDING AND AVOID WINDOWS.

&&

LAT...LON 3661 8790 3628 8789 3630 8765 3642 8732
          3663 8749

$$
19

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 Apr 29, 9:00 PM CDT, 29 minutes earlier.

Area forecast discussion, Apr 29, 9:00 PM CDT, 29 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
900 PM CDT TUE APR 29 2003

STORMS HAVE DIMINISHED IN INTENSITY DURING THE PAST HOUR OVER MID
TN. EVENING BNA SOUNDING SHOWS UNSTABLE CONDITIONS WITH TOTAL TOTALS
56...CAPES NEAR 3000 AND LIGHT WIND FIELDS. STORMS HAVE PRODUCED
SOME ISOLATED LARGE HAIL THIS EVENING.

MAIN FRONT TO OUR NORTH OVER OHIO VALLEY. OUTFLOW BOUNDARY IN WEST
KY INTO THE MO BOOTHEEL. WE ARE WATCHING STORMS OVER WEST KY
CAREFULLY. THEY HAVE BEEN DEVELOPING SOUTHEAST INTO A DEW POINT AND
INSTABILITY MAXIMUM AREA CENTERED AROUND CLARKSVILLE. WIND FIELDS
WILL REMAIN VERY LIGHT...SO MAIN THREAT WITH STORMS WILL BE HAIL AND
LOCALLY HEAVY RAIN. RAIN CHANCES MAY BE ADJUSTED LATE THIS EVENING
BASED ON STORM COVERAGE/ RADAR TRENDS. BEST CHANCE LOOKS TO BE IN
THE FAR NORTHWEST COUNTIES.

.BNA...NONE.
13

Hazardous weather outlook, Apr 29, 5:30 AM CDT, 15 hours 59 minutes before

TNZ005>011-022>034-056>066-075>080-093>097-301030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CDT TUE APR 29 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

AS THE ATMOSPHERE BECOMES MORE UNSTABLE...THE CHANCES FOR
CONVECTIVE WEATHER WILL INCREASE. SHOWERS AND THUNDERSTORMS WILL BE
POSSIBLE THROUGH THE WEEK...BUT THE BEST CHANCE FOR CONCENTRATED
THUNDERSTORM ACTIVITY WILL BE WITH A FRONTAL PASSAGE ON FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

GIRODO

In the hours before

Local storm report, Apr 29, 5:58 PM CDT, 3 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
558 PM CDT TUE APR 29 2003

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

0541 PM    CENTREVILLE               TN   3/4 INCH HAIL
04/25/03   HICKMAN                        AT 541 PM CDT 3/4 INCH
                                          SIZE HAIL WAS REPORTED IN
                                          THE HILLTOP COMMUNITY.
                                          REPORTED BY SHERIFFS
                                          DISPATCH.

FERRELL

Local storm report, Apr 29, 6:27 PM CDT, 3 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
ISSUED BY NWS MORRISTOWN TN
627 PM CDT TUE APR 29 2003

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

0606 PM    5W LEBANON                TN   3/4 INCH HAIL
04/25/03   WILSON                         REPORTED BY SHERIFFS
                                          DISPATCH.

FERRELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 7:04 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery	26 min
Apr 29, 7:16 PM CDT	Severe Thunderstorm Warning	OHX	Sumner	29 min
Apr 29, 7:38 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Lewis	22 min
Apr 29, 7:40 PM CDT	Severe Thunderstorm Warning	OHX	Hickman	50 min
Apr 29, 7:44 PM CDT	Severe Thunderstorm Warning	OHX	Sumner	46 min
Apr 29, 7:52 PM CDT	Severe Thunderstorm Warning	OHX	Humphreys	38 min
Apr 29, 8:01 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence	44 min
Apr 29, 9:08 PM CDT	Flash Flood Warning	OHX	Lewis, Maury	3 hr
Apr 29, 9:18 PM CDT	Severe Thunderstorm Warning	OHX	Overton	27 min
Apr 29, 9:19 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys	41 min
Apr 29, 9:57 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys, Overton	48 min
Apr 29, 10:44 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Humphreys	46 min
Apr 29, 11:51 PM CDT	Flash Flood Warning	OHX	Lewis, Maury	3 hr
Apr 30, 2:50 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Van Buren	40 min
Apr 30, 3:32 PM CDT	Flash Flood Warning	OHX	Cumberland, Van Buren	118 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.