Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 400, NWS Nashville, TN

July 28, 2003Robertson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 28, 2003, 1:45 PM CDT for Robertson County, Tennessee. It was in force for 45 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: Jul 28, 2003, 1:45 PM CDT (18:45 UTC)
Expired: Jul 28, 2003, 2:30 PM CDT
In force: 45 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.8 hours before the alert went out and 59 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: 1388 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 903 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 22 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.

714 
WUUS54 KOHX 281845
SVRBNA
TNC147-281930-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
144 PM CDT MON JUL 28 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

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

* UNTIL 230 PM CDT

* AT 136 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES EAST OF ADAMS...OR 10 MILES NORTHWEST  
  OF SPRINGFIELD...MOVING EAST SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SPRINGFIELD AROUND 200 PM CDT
  7 MILES SOUTH OF ORLINDA AROUND 220 PM CDT
  CROSS PLAINS AROUND 225 PM CDT

THIS THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS, 
WHICH MAY CAUSE INJURY AND PROPERTY DAMAGE. TAKE SHELTER IN A STURDY 
BUILDING AND AVOID WINDOWS.

LAT...LON 3670 8703 3653 8711 3645 8671 3661 8664

$$

04

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 Jul 28, 10:15 AM CDT, 3 hours 30 minutes earlier.

Area forecast discussion, Jul 28, 10:15 AM CDT, 3 hours 30 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
1015 AM CDT MON JUL 28 2003

COOL FRONT CONTINUES TO SLIP SOUTHWARD AND EXTENDS FROM A LOW IN SOUTHERN
KANSAS ACROSS THE SOUTH TIP OF ILLINOIS AND THEN EASTWARD INTO THE
UPPER OHIO VALLEY. CONVECTION AHEAD OF THE FRONT EXTENDS SOUTH OF
THE FRONT THROUGH SOUTHERN ARKANSAS-SOUTHERN KENTUCKY. ORGANIZED
CONVECTIVE ACTIVITY WILL LIKELY MOVE INTO THE MIDSTATE THIS
AFTERNOON AND CONTINUE THROUGH THE EVENING UNTIL THE EFFECTS OF
DAYTIME HEATING WEAR OFF. MODELS APPEAR TO PUSH THE FRONT TO THE
SOUTHERN BORDER AND MAKE IT STATIONARY.

CURRENT ZONE PACKAGE SEEMS TO CAPTURE THESE TRENDS WELL. WHILE THE
OUTLOOK FROM NORMAN DOES NOT MENTION SEVERE STORMS...THE EXPECTED
THERMODYNAMIC PARAMETERS ARE JUICY ENOUGH TO WARRANT MENTION OF
SEVERE TO GUARD AGAINST THE POSSIBILITY OF SEVERE THUNDERSTORM WINDS
OR POSSIBILY HAIL.

NO CHANGES FOR NOW.

.BNA...NONE.

JLM

Hazardous weather outlook, Jul 28, 5:30 AM CDT, 8 hours 15 minutes before

TNZ005>011-022>034-056>066-075>080-093>097-291030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CDT MON JUL 28 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT WILL MOVE SOUTHWARD FROM THE OHIO VALLEY. THIS FRONT
WILL INTERACT WITH THE HEAT AND HUMIDITY ACROSS MIDDLE TENNESSEE TO
PRODUCE THUNDERSTORMS...ESPECIALLY LATE THIS AFTERNOON AND TONIGHT.
A FEW STORMS MAY BECOME SEVERE...WITH DAMAGING WINDS BEING THE MAIN
THREAT. THE GREATEST PROBABILITY FOR THUNDERSTORMS AND SEVERE
WEATHER WILL BE OVER THE NORTH HALF OF THE MID STATE. LOCALLY HEAVY
RAINFALL WILL OCCUR WITH SOME OF THE THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THERE WILL BE A CHANCE OF MAINLY AFTERNOON AND EVENING THUNDERSTORMS
ON AND OFF THROUGH THE PERIOD. ANOTHER COLD FRONT WILL APPROACH
WEDNESDAY NIGHT AND THURSDAY...INCREASING THE CHANCES FOR
THUNDERSTORMS. THIS FRONT WILL ALSO INCREASE THE CHANCE FOR SEVERE
THUNDERSTORMS WEDNESDAY NIGHT AND THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY LATE THIS AFTERNOON AND EVENING.

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 2:38 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Pickett	37 min
Jul 28, 3:17 PM CDT	Severe Thunderstorm Warning	OHX	Smith	28 min
Jul 28, 3:34 PM CDT	Severe Thunderstorm Warning	OHX	Jackson	26 min
Jul 28, 4:05 PM CDT	Severe Thunderstorm Warning	OHX	Williamson	25 min
Jul 28, 4:24 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford	51 min
Jul 28, 4:30 PM CDT	Severe Thunderstorm Warning	OHX	Warren	45 min
Jul 28, 4:55 PM CDT	Flash Flood Warning	OHX	Williamson	2 hr
Jul 28, 5:17 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence	43 min
Jul 28, 5:27 PM CDT	Severe Thunderstorm Warning	OHX	Bedford	33 min
Jul 28, 5:33 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Robertson, Stewart	87 min
Jul 28, 5:46 PM CDT	Severe Thunderstorm Warning	OHX	Coffee	29 min
Jul 28, 5:56 PM CDT	Flash Flood Warning	OHX	Coffee	2 hr
Jul 28, 6:05 PM CDT	Severe Thunderstorm Warning	OHX	Lincoln	40 min
Jul 28, 6:10 PM CDT	Severe Thunderstorm Warning	OHX	Franklin	50 min
Jul 28, 6:10 PM CDT	Tornado Warning	OHX	Montgomery, Robertson	35 min
Jul 28, 6:49 PM CDT	Tornado Warning	OHX	Cheatham, Montgomery, Robertson	41 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.