Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 210, NWS Nashville, TN

May 7, 2003Sumner County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 7, 2003, 2:22 AM CDT for Sumner County, Tennessee. It was in force for 43 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: May 7, 2003, 2:22 AM CDT (07:22 UTC)
Expired: May 7, 2003, 3:05 AM CDT
In force: 43 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Sumner County, TN

The radar

The Nashville radar (KOHX), 34 km from the middle of the area, began a volume at 07:26 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
May 6, 11:50 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 7.4 hours before the alert went out and 48 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: 1519 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 720 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

588 
WUUS54 KOHX 070722
SVRBNA
TNC165-070805-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
218 AM CDT WED MAY 7 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SUMNER COUNTY IN TENNESSEE

* UNTIL 305 AM CDT

* AT 211 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 6 MILES NORTHEAST OF PORTLAND TO
  MILLERSVILLE...OR FROM 7 MILES SOUTHEAST OF FRANKLIN TO 12 MILES
  SOUTHEAST OF SPRINGFIELD...MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE...NEAR
  GALLATIN AROUND 230 AM CDT

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CDT WEDNESDAY MORNING
FOR TENNESSEE.

&&

LAT...LON 3671 8645 3628 8681 3633 8632 3667 8622

$$

END/JAO

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 May 6, 9:19 PM CDT, 5 hours 3 minutes earlier.

Area forecast discussion, May 6, 9:19 PM CDT, 5 hours 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
919 PM CDT TUE MAY 6 2003

CURRENTLY, THUNDERSTORMS ARE OCCURRING TO OUR SOUTHWEST AND
NORTHWEST, BUT ALL IS QUIET IN MIDDLE TENNESSEE THIS HOUR. EVENING
SOUNDING FROM OLD HICKORY GIVES A LIFTED INDEX OF -4.6, WITH A
CONVECTIVE AVAILABLE POTENTIAL ENERGY OF 1386 J/KG. ATMOSPHERE IS A
TAD DRY, WITH PRECIPITABLE WATER JUST 1.20 INCHES AND WITH
SIGNIFICANT DRYING IN THE MID AND UPPER LEVELS, BUT THAT CAN ALWAYS
CHANGE.

VARIOUS SURFACE ANALYSES AT 01Z SHOW A BULLSEYE OF -10 LIFTED
INDICES CENTERED OVER EXTREME SOUTHEAST MISSOURI, WITH GREATEST
SURFACE PRESSURE FALLS EXTENDING FROM NASHVILLE WESTWARD. MEANWHILE,
LATEST CONVECTIVE OUTLOOK FROM SPC SHOWS ALL OF MIDDLE TENNESSEE
UNDER A SLIGHT RISK FOR OVERNIGHT SEVERE WEATHER, WITH MODERATE RISK
CREEPING INTO OUR EXTREME NORTHWEST COUNTIES.

HAVE UPDATED THE ZONE FORECAST PRODUCT FOR INCLUDE MENTION OF THE
FLOOD WATCH THAT WAS ISSUED EARLIER, BUT HAVE MADE NO CHANGES TO THE
ACTUAL FORECAST. MOST RECENT MODEL RUNS SHOW PEAK TIME FOR OVERNIGHT
CONVECTION AROUND 09Z, SO BELIEVE IT WILL BE SEVERAL HOURS BEFORE
THUNDERSTORMS EITHER MOVE INTO OR DEVELOP OVER THE MID STATE.

.BNA...FLOOD WATCH ALL OF MIDDLE TENNESSEE AND THE CUMBERLAND
PLATEAU TONIGHT AND TOMORROW MORNING.

ROSE

Hazardous weather outlook, May 6, 5:30 AM CDT, 20 hours 52 minutes before

TNZ005>011-022>034-056>066-075>080-093>097-071030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CDT TUE MAY 6 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT
STRONG STORMS WILL CONTINUE TO AFFECT THE MID-STATE AGAIN TODAY
AND TONIGHT. THUNDERSTORMS MAY PRODUCE NOT ONLY ISOLATED TORNADOES
BUT EXTENDED HEAVY RAINS AS WELL. HEAVY RAIN MAY LEAD TO ISOLATED
TO WIDESPREAD FLOODING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
A SERIES OF DISTURBANCE WILL CONTINUE TO BRING SCATTERED SHOWERS
AND THUNDERSTORMS TO THE AREA WEDNESDAY THROUGH FRIDAY. THERE IS
A CHANCE OF LOCALLY SEVERE WEATHER EACH OF THESE DAYS.

.SPOTTER INFORMATION STATEMENT...
SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD REMAIN ALERT
AGAIN TODAY AND TONIGHT FOR POSSIBLE ACTIVATION.

07

In the hours before

Local storm report, May 7, 12:20 AM CDT, 2 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1220 AM CDT WED MAY 07 2003

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

1200 AM    BON AQUA                  TN   0.75 IN HAIL
05/07/03   HICKMAN                        REPORTED BY TRAINED
                                          SPOTTER

ROSE

Local storm report, May 7, 1:16 AM CDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0116 AM CDT WED MAY 07 2003

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

0115 AM    LA VERGNE                 TN   FLASH FLOOD
05/07/03   RUTHERFORD                     MULTIPLE REPORTS OF STREET
                                          FLOODING IN LA VERGNE AND
                                          SMYRNA

ROSE

Local storm report, May 7, 1:36 AM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0136 AM CDT WED MAY 07 2003

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

0125 AM    CLARKSVILLE               TN   60 MPH WIND GUST
05/07/03   MONTGOMERY                     REPORTED BY TRAINED
                                          SPOTTER NEAR THE STATE LINE

ROSE

Local storm report, May 7, 1:50 AM CDT, 32 minutes before

MEMLSRBNA DEF
TTAA00 KOHX DDHHMM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE, TN
150 AM CDT WED MAY 7 2003

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

0130 AM    CLARKSVILLE               TN   FLOODING
05/07/03   MONTGOMERY                     MINOR STREET FLOODING
                                          REPORTED BY PUBLIC

ROSE

Local storm report, May 7, 2:04 AM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0204 AM CDT WED MAY 07 2003

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

1255 AM    6 NNE DOVER               TN   WIND DAMAGE
05/07/03   STEWART                        NUMEROUS TREES AND POWER
                                          LINES DOWN ALONG HWY 120
                                          REPORTED BY HAM RADIO
                                          SPOTTERS

MED

Local storm report, May 7, 2:18 AM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0218 AM CDT WED MAY 07 2003

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

0155 AM    PORTLAND                  TN   WIND DAMAGE
05/07/03   SUMNER                         SEVERAL TREES DOWN IN THE
                                          CITY OF PORTLAND REPORTED
                                          BY LAW ENFORCEMENT.

MED

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 11:16 PM CDT	Severe Thunderstorm Warning	OHX	Franklin, Lincoln	29 min
May 6, 11:42 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Giles, Marshall	33 min
May 6, 11:44 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Franklin, Moore	46 min
May 6, 11:51 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	39 min
May 6, 11:52 PM CDT	Flash Flood Warning	OHX	Bedford, Coffee, Franklin, Giles, Grundy, Lawrence and 7 more	3 hr
May 6, 11:59 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Williamson	31 min
May 7, 12:12 AM CDT	Flash Flood Warning	OHX	Benton, Houston, Humphreys, Montgomery, Stewart	3 hr
May 7, 12:13 AM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Warren	32 min
May 7, 12:19 AM CDT	Severe Thunderstorm Warning	OHX	Stewart	41 min
May 7, 12:21 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Williamson	39 min
May 7, 12:27 AM CDT	Flash Flood Warning	OHX	Cheatham, Davidson, Williamson	3 hr
May 7, 12:38 AM CDT	Flash Flood Warning	OHX	Cannon, DeKalb, Rutherford, Van Buren, Warren, White and 1 more	3 hr
May 7, 12:57 AM CDT	Severe Thunderstorm Warning	OHX	Hickman, Humphreys, Perry	33 min
May 7, 1:05 AM CDT	Flash Flood Warning	OHX	Dickson, Hickman	3 hr
May 7, 1:12 AM CDT	Severe Thunderstorm Warning	OHX	Montgomery	48 min
May 7, 1:20 AM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner	50 min
May 7, 1:27 AM CDT	Flash Flood Warning	OHX	Robertson, Sumner	3 hr
May 7, 1:29 AM CDT	Severe Thunderstorm Warning	OHX	Hickman, Perry	31 min
May 7, 1:31 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Wilson	54 min
May 7, 1:46 AM CDT	Flash Flood Warning	OHX	Macon, Smith, Trousdale	3 hr
May 7, 1:48 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Hickman, Robertson, Williamson	42 min
May 7, 2:28 AM CDT	Severe Thunderstorm Warning	OHX	Macon, Smith, Trousdale, Wilson	47 min
May 7, 2:32 AM CDT	Severe Thunderstorm Warning	OHX	Cannon, Rutherford, Williamson	43 min
May 7, 2:53 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Overton, Putnam, Smith and 1 more	57 min
May 7, 3:01 AM CDT	Flash Flood Warning	OHX	Bedford, Coffee, Franklin, Giles, Grundy, Lawrence and 8 more	3 hr
May 7, 3:30 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Fentress, Overton, Pickett	55 min
May 7, 3:37 AM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Van Buren, Warren, White	53 min
May 7, 3:57 AM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy	48 min
May 7, 5:05 AM CDT	Flash Flood Warning	OHX	Benton, Cannon, Cheatham, Clay, Cumberland, Davidson and 22 more	6 hr
May 7, 5:12 AM CDT	Severe Thunderstorm Warning	OHX	Lewis, Wayne	33 min
May 7, 5:48 AM CDT	Severe Thunderstorm Warning	OHX	Lewis, Maury	42 min
May 7, 5:55 AM CDT	Severe Thunderstorm Warning	OHX	Perry	50 min
May 7, 6:12 AM CDT	Flash Flood Warning	OHX	Bedford, Coffee, Franklin, Giles, Grundy, Hickman and 8 more	6 hr
May 7, 6:22 AM CDT	Flash Flood Warning	OHX	Warren	6 hr
May 7, 6:47 AM CDT	Tornado Warning	OHX	Bedford, Rutherford	43 min
May 7, 6:58 AM CDT	Tornado Warning	OHX	Marshall, Williamson	32 min
May 7, 7:31 AM CDT	Severe Thunderstorm Warning	OHX	Hickman	44 min
May 7, 7:35 AM CDT	Tornado Warning	OHX	Cannon, DeKalb, Wilson	25 min
May 7, 7:42 AM CDT	Severe Thunderstorm Warning	OHX	Maury, Williamson	48 min
May 7, 8:00 AM CDT	Severe Thunderstorm Warning	OHX	Putnam	45 min
May 7, 8:03 AM CDT	Severe Thunderstorm Warning	OHX	Rutherford	42 min
May 7, 8:07 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson	38 min
May 7, 8:27 AM CDT	Severe Thunderstorm Warning	OHX	Bedford, Marshall	48 min
May 7, 8:52 AM CDT	Severe Thunderstorm Warning	OHX	DeKalb, White	43 min
May 7, 9:15 AM CDT	Severe Thunderstorm Warning	OHX	Coffee	30 min
May 7, 9:18 AM CDT	Severe Thunderstorm Warning	OHX	Bedford	42 min
May 7, 10:50 AM CDT	Flash Flood Warning	OHX	Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 25 more	5 hr

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; radar from the NEXRAD Level II archive.