Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 479, NWS Nashville, TN

November 18, 2003Smith County, Trousdale County, Wilson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Nov 18, 2003, 2:15 PM CST for Smith County, Trousdale County, Wilson County, Tennessee. It was in force for 60 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: Nov 18, 2003, 2:15 PM CST (20:15 UTC)
Expired: Nov 18, 2003, 3:15 PM CST
In force: 60 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

Counties Smith County, TN, Trousdale County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 41 km from the middle of the area, began a volume at 20:16 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
Nov 18, 1:55 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.3 hours before the alert went out and 47 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1000 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 325 m²/s²
0-3 km storm-relative helicity: 386 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.

000 
WUUS54 KOHX 182015
SVRBNA
TNC159-169-189-182115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
211 PM CST TUE NOV 18 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SMITH COUNTY IN TENNESSEE
  TROUSDALE COUNTY IN TENNESSEE
  WILSON COUNTY IN TENNESSEE

* UNTIL 315 PM CST

* AT 210 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS MOVING THROUGH WILSON...FROM HUNTERS
  POINT...LEBANON TO NORENE. MOVEMENT WAS EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HARTSVILLE AROUND 230 PM CST
  CARTHAGE AROUND 235 PM CST

DAMAGING WINDS IN EXCESS OF 60 MPH ARE LIKELY WITH THIS STORM. IF 
YOU ARE IN THE PATH OF THIS STORM...MOVE INDOORS.

THE MAIN THREAT IS DAMAGING WIND. SEEK SHELTER INSIDE A STURDY BUILDING
AND STAY AWAY FROM OUTSIDE WALLS AND WINDOWS.

TORNADO WATCH REMAINS UNTIL 7 PM CST THIS EVENING.

LAT...LON 3630 8626 3602 8623 3617 8582 3638 8589
          3644 8620

$$
BOYD

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 Nov 18, 9:55 AM CST, 4 hours 20 minutes earlier.

Area forecast discussion, Nov 18, 9:55 AM CST, 4 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
955 AM CST TUE NOV 18 2003

.UPDATE...
SHRA HAVE INVADED THE W W/ SOME WARNINGS ISSUED. VERY LITTLE IN WAY
OF LIGHTNING STRIKES SO FAR. WINDS OUT OF SSE GUSTING TO NEAR 30
MPH. TEMPS NEED TO BE BUMPED UP A LITTLE.
&&

.BNA WATCHES/WARNING/ADVISORIES...FLOOD WATCH IN EFFECT FOR SOUTHERN
AND EASTERN MIDDLE TENNESSEE FOR THIS AFTERNOON AND TONIGHT.
&&

MAGM

Hazardous weather outlook, Nov 18, 5:30 AM CST, 8 hours 45 minutes before

TNZ005>011-022>034-056>066-075-077>080-093>095-191130-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CST TUE NOV 18 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT.
MOIST SOUTH WINDS AND LOW LEVEL WIND SHEAR ARE SUFFICIENT FOR
STRONG TO SEVERE THUNDERSTORMS. A FEW STORMS COULD DEVELOP ROTATION.
THESE STORMS WILL BE CAPABLE OF DAMAGING STRAIGHT-LINE WINDS AND
POSSIBLY A FEW TORNADOES. HEAVY RAINFALL IS ALSO POSSIBLE WITH THIS
SYSTEM...WITH THE BEST CHANCE IN SOUTH MIDDLE TENNESSEE AND THE
CUMBERLAND PLATEAU TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

ANOTHER COLD FRONT LOOKS TO MOVE INTO MIDDLE TENNESSEE ON MONDAY.
THERE WILL BE A CHANCE OF THUNDERSTORMS BUT MOISTURE APPEARS LIMITED
WITH THIS SYSTEM. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND TONIGHT.

04

In the hours before

Local storm report, Nov 18, 1:54 PM CST, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE,TN
154 PM CST TUE NOV 18 2003

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

0100 PM    3 E CAMDEN                TN   FLOOD
11/18/03   BENTON                         EMA REPORTED
                                          BIVERS-CYPRESS CREEK ROAD
                                          WAS CLOSED DUE TO HIGH
                                          WATER OVER THE ROAD.

JAO

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 18, 9:13 AM CST	Severe Thunderstorm Warning	OHX	Benton	62 min
Nov 18, 9:26 AM CST	Severe Thunderstorm Warning	OHX	Stewart	64 min
Nov 18, 10:11 AM CST	Flash Flood Warning	OHX	Benton	3 hr
Nov 18, 12:51 PM CST	Severe Thunderstorm Warning	OHX	Robertson	39 min
Nov 18, 1:18 PM CST	Severe Thunderstorm Warning	OHX	Davidson	57 min
Nov 18, 1:33 PM CST	Severe Thunderstorm Warning	OHX	Wilson	42 min
Nov 18, 1:53 PM CST	Severe Thunderstorm Warning	OHX	Rutherford	52 min
Nov 18, 1:59 PM CST	Severe Thunderstorm Warning	OHX	Coffee	61 min
Nov 18, 2:24 PM CST	Severe Thunderstorm Warning	OHX	Macon	51 min
Nov 18, 2:33 PM CST	Severe Thunderstorm Warning	OHX	Cannon, DeKalb	57 min
Nov 18, 3:22 PM CST	Severe Thunderstorm Warning	OHX	Cumberland	53 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.