Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 302, NWS Nashville, TN

June 11, 2003Macon County, Sumner County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jun 11, 2003, 3:51 PM CDT for Macon County, Sumner 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: Jun 11, 2003, 3:51 PM CDT (20:51 UTC)
Expired: Jun 11, 2003, 4:40 PM CDT
In force: 49 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Macon County, TN, Sumner County, TN

The radar

The Nashville radar (KOHX), 50 km from the middle of the area, began a volume at 20:55 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
Jun 11, 10:45 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 11, 3:30 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 62 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: 1603 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 757 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 216 m²/s²
0-3 km storm-relative helicity: 244 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOHX 112051
SVRBNA
TNC111-165-112140-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
350 PM CDT WED JUN 11 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

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

* UNTIL 440 PM CDT

* AT 340 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES SOUTHWEST OF WESTMORELAND...OR 9 MILES
  NORTH OF GALLATIN...MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  IN NORTHEASTERN SUMNER COUNTY BY 400 PM CDT
  IN NORTHERN MACON COUNTY BY 410 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 3659 8644 3644 8632 3645 8579 3679 8586

$$

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 Jun 11, 2:30 PM CDT, 1 hour 21 minutes earlier.

Area forecast discussion, Jun 11, 2:30 PM CDT, 1 hour 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
230 PM CDT WED JUN 11 2003

CURRENT...STORMS MARCHING ACROSS CWA W/ NUMEROUS WARNINGS. TEMPS
RANGING FROM UPPER 60S IN RAIN-COOLED AREAS TO MID 80S.

FORECAST...CWA TO BE IN MOIST UNSTABLE AIR MASS FOR WHAT SEEMS LIKE
FOREVER W/ S/WV AFTER S/WV PASSING THROUGH. THIS ALONG W/
MESOSCALE-DRIVEN FEATURES (LEFTOVER BOUNDARIES) WILL ENHANCE
PRECIP/TSTM CHANCES ALL THE WAY INTO SAT. HEAVY RAIN...SEVERE
WEATHER LIKELY FOR A WHILE. MODEL CONVECTIVE FEEDBACK MAY BE A
PROBLEM SO PINPOINTING TIMING/LOCATION OF HEAVIEST RAINS QUITE
DIFFICULT.

AS FOR TEMPS...WENT ON COOLER SIDE OF GUIDANCE.

BNA TT 70/82/70/82/70 7767
CSV TT 68/77/68/77/68 7767

.BNA...SEVERE TSTM WATCH UNTIL 4 PM.

MAG

Hazardous weather outlook, Jun 11, 9:45 AM CDT, 6 hours 6 minutes before

TNZ005>011-022>034-056>066-075>080-093>097-121030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
945 AM CDT WED JUN 11 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

A VERY MOIST AND VERY UNSTABLE ATMOSPHERE WILL REMAIN OVER MID
TENNESSEE...ALONG WITH SEVERAL LINGERING SURFACE BOUNDARIES.
THE WEATHER WILL BECOME ESPECIALLY ACTIVE THIS AFTERNOON AND TONIGHT
AS A STRONG DISTURBANCE MOVES ACROSS THE AREA. THUNDERSTORMS WILL
BECOME WIDESPREAD AT TIMES. MANY OF THE THUNDERSTORMS WILL PRODUCE
TORRENTIAL DOWNPOURS...WHICH COULD LEAD TO PONDING ON ROADS AND
COULD CAUSE SMALL STREAMS TO RISE RAPIDLY. SOME THUNDERSTORMS WILL
PRODUCE DAMAGING WINDS AND POSSIBLY LARGE HAIL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

LITTLE CHANGE TO THE WEATHER PATTERN IS EXPECTED OVER THE NEXT
SEVERAL DAYS. SCATTERED THUNDERSTORMS ARE A GOOD BET THROUGH THE
PERIOD...AND LOCALLY SEVERE THUNDERSTORMS ARE POSSIBLE EACH DAY.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SPOTTERS AND EMERGENCY MANAGERS IS LIKELY TODAY AND
MAY BE NEEDED AT TIMES THROUGH THE FORECAST PERIOD.

13

In the hours before

Local storm report, Jun 11, 3:16 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0316 PM CDT WED JUN 11 2003

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

0300 PM    CENTERVILLE               TN   WIND DAMAGE
06/11/03   HICKMAN                        MULTIPLE TREES DOWN IN
                                          BURNHAM...REPORTED BY THE
                                          COUNTY HIGHWAY DEPARTMENT

0310 PM    LEWISBURG                 TN   WIND DAMAGE
06/11/03   MARSHALL                       ONE TREE DOWN IN CHAPEL
                                          HILL AND ONE TREE DOWN IN
                                          MORRISVILLE...REPORTED BY
                                          COUNTY HIGHWAY DEPARTMENT

STEIGERWALDT

Local storm report, Jun 11, 3:22 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0322 PM CDT WED JUN 11 2003

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

0230 PM    COLUMBIA                  TN   WIND DAMAGE
06/11/03   MAURY                          NUMEROUS TREES DOWN ACROSS
                                          COUNTY...REPORTED BY COUNTY
                                          HIGHWAY DEPARTMENT

STEIGERWALDT

Local storm report, Jun 11, 3:25 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0325 PM CDT WED JUN 11 2003

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

0245 PM    FRANKLIN                  TN   WIND DAMAGE
06/11/03   WILLIAMSON                     NUMEROUS TREES DOWN
                                          COUNTYWIDE...REPORTED BY
                                          COUNTY HIGHWAY DEPARTMENT

STEIGERWALDT

Local storm report, Jun 11, 3:36 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0336 PM CDT WED JUN 11 2003

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

0330 PM    2 SW MOUNT JULIET         TN   WIND DAMAGE
06/11/03   WILSON                         TREES DOWN ALONG
                                          INTERSTATE 40 AT MILE
                                          MARKER 225...REPORTED BY
                                          THE PUBLIC

STEIGERWALDT

Special weather statement, Jun 11, 3:36 PM CDT, 15 minutes before

TNZ005>011-022>034-056>066-075>080-093>097-112300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
336 PM CDT WED JUN 11 2003

...SEVERE THUNDERSTORM WATCH UNTIL 800 PM CDT FOR ALL OF MIDDLE
TENNESSEE...

AT 345 PM CDT...BANDS OF STRONG TO SEVERE THUNDERSTORMS CONTINUED
TO MOVE INTO MIDDLE TENNESSEE. NUMEROUS REPORTS OF LARGE HAIL AND
DAMAGING WINDS HAVE ALREADY BEEN RECEIVED TODAY...AND MORE SEVERE
WEATHER IS LIKELY LATE THIS AFTERNOON AND EVENING. THE MAIN THREAT
WILL BE DAMAGING WINDS IN EXCESS OF 60 MPH. LARGE HAIL IS ALSO A
THREAT. MANY OF THE STORMS WILL PRODUCE TORRENTIAL DOWNPOURS
RESULTING IN PONDING ON ROADS AND IN LOW LYING AREAS.

IF THUNDERSTORMS APPROACH YOUR LOCATION...SEEK SHELTER UNTIL THE
STORMS PASS. STAY AWAY FROM WINDOWS.

13

Local storm report, Jun 11, 3:48 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
0348 PM CDT WED JUN 11 2003

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

0300 PM    FOREST HILLS              TN   WIND DAMAGE
06/11/03   DAVIDSON                       NUMEROUS TREES
                                          DOWN...REPORTED BY
                                          EMERGENCY MANAGEMENT

0345 PM    3 S MOUNT JULIET          TN   WIND DAMAGE
06/11/03   WILSON                         TWO TREES DOWN...REPORTED
                                          BY NWS EMPLOYEE

STEIGERWALDT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 11:28 AM CDT	Severe Thunderstorm Warning	OHX	Wilson	47 min
Jun 11, 11:41 AM CDT	Severe Thunderstorm Warning	OHX	Rutherford	49 min
Jun 11, 11:50 AM CDT	Severe Thunderstorm Warning	OHX	Franklin, Lincoln, Moore	40 min
Jun 11, 12:11 PM CDT	Severe Thunderstorm Warning	OHX	Smith, Trousdale	34 min
Jun 11, 12:39 PM CDT	Severe Thunderstorm Warning	OHX	Jackson	36 min
Jun 11, 12:55 PM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy	50 min
Jun 11, 1:01 PM CDT	Severe Thunderstorm Warning	OHX	Franklin	29 min
Jun 11, 1:15 PM CDT	Severe Thunderstorm Warning	OHX	Overton	30 min
Jun 11, 1:20 PM CDT	Severe Thunderstorm Warning	OHX	Van Buren, Warren	40 min
Jun 11, 1:35 PM CDT	Severe Thunderstorm Warning	OHX	Perry	25 min
Jun 11, 1:43 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence	47 min
Jun 11, 1:46 PM CDT	Severe Thunderstorm Warning	OHX	Overton, Pickett	44 min
Jun 11, 1:54 PM CDT	Severe Thunderstorm Warning	OHX	Fentress	51 min
Jun 11, 2:15 PM CDT	Severe Thunderstorm Warning	OHX	Giles	45 min
Jun 11, 2:21 PM CDT	Severe Thunderstorm Warning	OHX	Benton, Houston, Stewart	49 min
Jun 11, 2:29 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Marshall, Maury, Williamson	56 min
Jun 11, 2:39 PM CDT	Severe Thunderstorm Warning	OHX	Davidson	46 min
Jun 11, 2:56 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner, Trousdale, Wilson	64 min
Jun 11, 3:07 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford	48 min
Jun 11, 3:30 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Coffee, Moore	55 min
Jun 11, 3:55 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Smith	50 min
Jun 11, 4:00 PM CDT	Severe Thunderstorm Warning	OHX	Trousdale	30 min
Jun 11, 4:20 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Warren	35 min
Jun 11, 4:23 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Overton, Putnam	57 min
Jun 11, 4:44 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb	16 min
Jun 11, 6:19 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	21 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.