Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 102, NWS Nashville, TN

May 1, 2003Macon County, Sumner County, Trousdale County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 1, 2003, 3:55 PM CDT for Macon County, Sumner County, Trousdale County, Tennessee. It was in force for 50 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 1, 2003, 3:55 PM CDT (20:55 UTC)
Expired: May 1, 2003, 4:45 PM CDT
In force: 50 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Macon County, TN, Sumner County, TN, Trousdale County, TN

The radar

The Nashville radar (KOHX), 45 km from the middle of the area, began a volume at 20:54 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 1, 2:35 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.9 hours before the alert went out and 57 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: 358 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 1214 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

424 
WUUS54 KOHX 012055
SVRBNA
TNC111-165-169-012145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
353 PM CDT THU MAY 1 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

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

* UNTIL 445 PM CDT

* AT 342 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 9 MILES NORTHWEST OF WESTMORELAND
  TO 3 MILES WEST OF GALLATIN...OR FROM 12 MILES SOUTHWEST OF
  SCOTTSVILLE TO 3 MILES WEST OF GALLATIN...MOVING EAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE...NEAR
  WESTMORELAND AROUND 400 PM CDT
  HARTSVILLE AROUND 425 PM CDT
  LAFAYETTE AROUND 435 PM CDT

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 3672 8636 3632 8660 3629 8602 3670 8579

$$
END/ORCHANIAN

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 1, 3:45 PM CDT, 10 minutes earlier.

Area forecast discussion, May 1, 3:45 PM CDT, 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
345 PM CDT THU MAY 01 2003

COLD FRONT TO THE NORTHWEST STRETCHING FROM THE EASTERN GREAT LAKES
TO NORTHEAST TEXAS. MCS OVER WRN/MIDDLE TN MOVING EASTWARD AND SOUTHEASTWARD
THROUGH MIDDLE TENNESSEE AND NORTHERN MS. H5 TROUGH BACK OVER
NORTHERN PLAINS WITH LARGE H5 TROUGH TO THE NORTH OVER HUDSON BAY.

MODELS BRING FRONT THROUGH MIDDLE TENNESSEE LATE TONIGHT AND FRIDAY.
SOME DRYING ON SATURDAY AND SAT NIGHT AS SURFACE RIDGE POKES SOUTHWARD
FROM THE GREAT LAKES. NEXT SYSTEM DEVELOPS RAPIDLY OVER THE PLAINS
WITH A WARM FRONT THAT MOVES INTO THE AREA LATE SUN PM AND EVENING.
ASSOCIATED SURFACE LOW MOVES SLOWLY NORTHEAST THROUGH THE PLAINS AND
GREAT LAKES WITH SOME DRYING EXPECTED OVER THE AREA BY TUESDAY PM.

BNA WB 062/080 054/071 051 18830
CSV WB 058/075 051/068 046 18652

.BNA...NONE.

JLM

Hazardous weather outlook, May 1, 5:30 AM CDT, 10 hours 25 minutes before

TNZ005>011-022>034-056>066-075>080-093>097-021030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CDT THU MAY 1 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP IN MIDDLE TENNESSEE
THIS AFTERNOON AND EVENING. SOME OF THESE THUNDERSTORMS MAY BE SEVERE
WITH DAMAGING WIND GUSTS AND LARGE HAIL. THE STORMS ARE EXPECTED TO
WEAKEN LATE TONIGHT...AS THE ATMOSPHERE WILL BECOME MORE STABLE.

.DAYS TWO THROUGH SEVEN...

SCATTERED THUNDERSTORMS ARE EXPECTED TO REDEVELOP IN MIDDLE TENNESSEE
ON FRIDAY. SOME OF THESE THUNDERSTORMS MAY BE SEVERE WITH DAMAGING
WIND GUSTS AND LARGE HAIL...AS A COLD FRONT MOVES INTO MIDDLE
TENNESSEE.

ANOTHER ROUND OF SEVERE WEATHER IS POSSIBLE EARLY NEXT WEEK...AS
ANOTHER SPRINGTIME DISTURBANCE STRENGTHENS EAST OF THE ROCKIES.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD BE ON ALERT STATUS
FOR POSSIBLE ACTIVATION THIS AFTERNOON...AND AGAIN ON FRIDAY.

04

In the hours before

Local storm report, May 1, 2:40 PM CDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0240 PM CDT THU MAY 01 2003

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

0238 PM    DICKSON                   TN   WIND DAMAGE
05/01/03   DICKSON                        SEVERAL REPORTS OF TREES
                                          DOWN

31

Local storm report, May 1, 2:55 PM CDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0255 PM CDT THU MAY 01 2003

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

0241 PM    DICKSON                   TN   0.88 IN HAIL
05/01/03   DICKSON

31

Local storm report, May 1, 3:09 PM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0309 PM CDT THU MAY 01 2003

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

0230 PM    CENTERVILLE               TN   WIND DAMAGE
05/01/03   HICKMAN                        POWERLINE DOWN CENTERVILLE
                                          AND ANOTHER DOWN NEAR BON
                                          AQUA

31

Local storm report, May 1, 3:25 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0325 PM CDT THU MAY 01 2003

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

0230 PM    5 W NASHVILLE             TN   WIND DAMAGE
05/01/03   DAVIDSON                       NUMEROUS POWER LINES AND
                                          TREES DOWN IN WESTERN
                                          PORTION OF COUNTY

31

Local storm report, May 1, 3:25 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT CORRECTION
NATIONAL WEATHER SERVICE NASHVILLE TN
0325 PM CDT THU MAY 01 2003

CORRECTION ON TIME

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

0320 PM    5 W NASHVILLE             TN   WIND DAMAGE
05/01/03   DAVIDSON                       NUMEROUS POWER LINES AND
                                          TREES DOWN IN WESTERN
                                          PORTION OF COUNTY

31

Local storm report, May 1, 3:42 PM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0342 PM CDT THU MAY 01 2003

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

0339 PM    FRANKLIN                  TN   WIND DAMAGE
05/01/03   WILLIAMSON                     POWER LINES DOWN ON
                                          CENTURY OAK DRIVE OFF
                                          FRANKLIN ROAD

31

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 1:23 PM CDT	Severe Thunderstorm Warning	OHX	Benton	37 min
May 1, 1:29 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	46 min
May 1, 1:36 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Humphreys	44 min
May 1, 2:04 PM CDT	Severe Thunderstorm Warning	OHX	Perry	41 min
May 1, 2:20 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman	25 min
May 1, 2:29 PM CDT	Severe Thunderstorm Warning	OHX	Wayne	46 min
May 1, 2:38 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson	47 min
May 1, 2:46 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman	29 min
May 1, 2:52 PM CDT	Severe Thunderstorm Warning	OHX	Lewis	38 min
May 1, 2:56 PM CDT	Severe Thunderstorm Warning	OHX	Robertson	49 min
May 1, 3:00 PM CDT	Severe Thunderstorm Warning	OHX	Williamson	45 min
May 1, 3:05 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	40 min
May 1, 3:12 PM CDT	Severe Thunderstorm Warning	OHX	Sumner	48 min
May 1, 3:26 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner, Wilson	54 min
May 1, 3:30 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner, Wilson	50 min
May 1, 3:32 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Wilson	48 min
May 1, 3:47 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford, Williamson	43 min
May 1, 4:00 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	45 min
May 1, 4:09 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, DeKalb, Smith	51 min
May 1, 5:09 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	51 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; radar from the NEXRAD Level II archive.