Alert archive / Tennessee / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 442, NWS Nashville, TN

August 10, 2003Putnam County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 10, 2003, 10:45 PM CDT for Putnam County, Tennessee. It was in force for 30 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: Aug 10, 2003, 10:45 PM CDT (03:45 UTC)
Expired: Aug 10, 2003, 11:15 PM CDT
In force: 30 min
Issued by: NWS Nashville, TN
Area: Counties, with a storm outline in the text

County Putnam County, TN

The radar

The Nashville radar (KOHX), 88 km from the middle of the area, began a volume at 03:44 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 3.8 hours before the alert went out and 91 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: 1474 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1073 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOHX 110345
SVRBNA
TNC141-110415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1043 PM CDT SUN AUG 10 2003

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

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

* UNTIL 1115 PM CDT

* AT 1040 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR BAXTER...OR 6 MILES WEST OF               
  COOKEVILLE...  MOVING SOUTH AT 10 MPH. THIS EXTENDS THE PREVIOUS   
  WARNING.

* THE SEVERE THUNDERSTORM WILL BE...
  IN CENTRAL AND SOUTHERN PUTNAM COUNTY THROUGH 1115 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 3619 8548 3608 8546 3608 8554 3600 8563
          3607 8569 3608 8574 3622 8574 3624 8568
          3623 8556 3627 8551

$$

13

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 Aug 10, 8:30 PM CDT, 2 hours 15 minutes earlier.

Area forecast discussion, Aug 10, 8:30 PM CDT, 2 hours 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
830 PM CDT SUN AUG 10 2003

HOURS BEFORE SUNSET ISOLATED RAIN SHOWERS AND THUNDERSTORMS STARTED
REDEVELOPING ALONG THE UPPER LEVEL TROUGH AND MOVING INTO MIDDLE
TENNESSEE. SOON AFTER SUNSET NATIONAL WEATHER SERVICE RADAR AND
SATELLITE IMAGES SHOWED PRECIPITATION DECREASING IN AREAL COVERAGE
AND INTENSITY.  AT PRESENT RADAR INDICATES ISOLATED RAIN SHOWERS AND
THUNDERSTORMS OVER THE NORTHERN CUMBERLAND PLATEAU REGION AND SOUTH
CENTRAL MIDDLE TENNESSEE. AFTER PRECIPITATION DISSIPATES WILL UPDATED
ZONES TO REMOVE POPS AND EVENING WORDING FROM TONIGHT PERIOD.
TOMORROW MORNING THE MODELS AGAIN HAVE VISIBILITIES DROPPING TO LESS
THAN A MILE WITH FOG IN THE CUMBERLAND PLATEAU REGION WITH ONLY
SLIGHTLY RESTRICTED VISIBILITIES OCCURRING ELSEWHERE.  WILL UPDATE
EASTERN ZONES WITH PATCHY FOG LATE. SKY CONDITION...TEMPERATURES AND
WINDS FROM PREVIOUS FORECAST PACKAGE ARE ON TRACK.

.BNA...NONE.

31

Hazardous weather outlook, Aug 10, 5:30 AM CDT, 17 hours 15 minutes before

TNZ005>011-022>034-056>066-075>080-093>097-111030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CDT SUN AUG 10 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF SPOTTERS AND EMERGENCY MANAGERS IS UNLIKELY.

GIRODO

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 9:39 PM CDT	Severe Thunderstorm Warning	OHX	Jackson	36 min
Aug 10, 10:17 PM CDT	Severe Thunderstorm Warning	OHX	Putnam	28 min
Aug 10, 10:18 PM CDT	Severe Thunderstorm Warning	OHX	Putnam	27 min
Aug 11, 1:17 PM CDT	Flash Flood Warning	OHX	Cumberland	118 min
Aug 11, 3:53 PM CDT	Severe Thunderstorm Warning	OHX	Sumner	37 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.