Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 94, NWS Nashville, TN

May 1, 2003Robertson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 1, 2003, 2:56 PM CDT for Robertson County, Tennessee. It was in force for 49 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, 2:56 PM CDT (19:56 UTC)
Expired: May 1, 2003, 3:45 PM CDT
In force: 49 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Robertson 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
May 1, 12:15 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.9 hours before the alert went out and 53 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.

436 
WUUS54 KOHX 011956
SVRBNA
TNC147-012045-

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

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

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

* UNTIL 345 PM CDT

* AT 244 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES SOUTHWEST OF CEDAR HILL...OR 11 MILES
  NORTH OF ASHLAND CITY...MOVING NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CEDAR HILL AROUND 310 PM CDT
  SPRINGFIELD AROUND 320 PM CDT
  7 MILES WEST OF CROSS PLAINS AROUND 335 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 3651 8719 3634 8711 3645 8663 3668 8675

$$
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, 10:20 AM CDT, 4 hours 36 minutes earlier.

Area forecast discussion, May 1, 10:20 AM CDT, 4 hours 36 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
1020 AM CDT THU MAY 01 2003

COLD FRONT TO THE NORTHWEST STRETCHING FROM THE EASTERN GREAT LAKES TO
NORTHWEST TEXAS. MCS OVER MO/AR WITH OUTFLOW BNDRY OVER MO BOOTHEEL
AND NORTHERN AR BULGING SEWD.

LOCAL ETA MODEL INDICATING SIGNIFICANT DESTABILIZATION OVER WEST TENNESSEE
NEAR MKL AROUND 20Z WITH A 3000+ B+ AXIS MOVING EASTWARD INTO  WESTERN
MIDDLE TENNESSEE BEFORE 00Z. COMPUTED LI INDICATED AROUND -9.

HAVE UPDATED NORTHWEST PORTION TO INCLUDE SVR MENTION...IAW WITH LATEST
GUIDANCE FROM SELS.

.BNA...NONE.

JLM

Hazardous weather outlook, May 1, 5:30 AM CDT, 9 hours 26 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, 2:04 PM CDT, 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0204 PM CDT THU MAY 01 2003

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

0135 PM    CAMDEN                    TN   WIND DAMAGE
05/01/03   BENTON                         ROOF DAMAGE TO RESTAURANT

31

Local storm report, May 1, 2:11 PM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0211 PM CDT THU MAY 01 2003

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

0200 PM    WAVERLY                   TN   WIND DAMAGE
05/01/03   HUMPHREYS                      TREES DOWN

31

Local storm report, May 1, 2:16 PM CDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0216 PM CDT THU MAY 01 2003

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

0200 PM    3 S ERIN                  TN   WIND DAMAGE
05/01/03   HOUSTON                        TREES DOWN ACROSS HIGHWAY
                                          231

31

Local storm report, May 1, 2:40 PM CDT, 16 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 minute 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

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, 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, 3:55 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale	50 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.