Alert archive / Tennessee / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 100, NWS Nashville, TN

May 13, 2002Davidson County, Wilson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 13, 2002, 4:21 AM CDT for Davidson County, Wilson County, Tennessee. It was in force for 24 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 13, 2002, 4:21 AM CDT (09:21 UTC)
Expired: May 13, 2002, 4:45 AM CDT
In force: 24 min
Issued by: NWS Nashville, TN
Area: Whole counties

Counties Davidson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 10 km from the middle of the area, began a volume at 09:21 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.

What was reported inside it

Time	Report	Where	Remark
May 13, 4:30 AM CDT	Thunderstorm Wind 50 E	Countywide, TN	Numerous trees and power lines down around the county including Hermitage, Joelton, East Nashville and Old Hickory. Some trees fell on cars and homes.
May 13, 4:35 AM CDT	Thunderstorm Wind 50 E	Mt Juliet, TN	Sheriff reported a tree was down on Benders Ferry Rd.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 9.4 hours before the alert went out and 7 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: 263 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1409 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOHX 130921
SVRBNA
TNC037-189-130945-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
420 AM CDT MON MAY 13 2002

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DAVIDSON COUNTY IN TENNESSEE
  WILSON COUNTY IN TENNESSEE

* UNTIL 445 AM CDT

* AT 410 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM NEAR NASHVILLE...MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NASHVILLE THROUGH 430 AM 
  LAKEWOOD AROUND 430 AM CDT
  GREEN HILL AROUND 435 AM 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 3625 8685 3607 8686 3602 8615 3627 8615

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 13, 3:10 AM CDT, 1 hour 11 minutes earlier.

Area forecast discussion, May 13, 3:10 AM CDT, 1 hour 11 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
310 AM CDT MON MAY 13 2002

CURRENT SURFACE ANALYSIS PLACING LOW NEAR MO BOOT VICINITY...
WITH TRAILING COLD FRONT NEAR TXK-AUS LINE. LARGE BAND OF SHWRS
/TSTMS AHEAD...JUST IN EXTREME NORTHWEST MIDDLE TN...WITH ISOLATED
TSTMS DEVELOPING SOUTHWARD.

COLD FRONT EXPECTED TO PUSH ACROSS THE CWA TODAY...WITH BEST
INSTABILITY...LOW-LEVEL SPEED MAX...AND PEAK LOW-LEVEL CONVERGENCE
FROM AROUND 09-17Z. CONDITIONS LINING UP FOR POSSIBILITY OF SEVERE
THUNDERSTORMS...WITH HEAVY RAINFALL ALSO PRETTY GOOD POSSIBILITY...
WILL MENTION IN ZONES. COLD FRONT EXPECTED TO BE NEAR CSV JUST AFTER
18Z...WITH PRECIP EXPECTED TO END IN THE AFTERNOON BNA-WEST.

BY 00Z...COLD FRONT WELL EAST OF THE AREA. LOW-LEVEL MOISTURE HANGING
BEHIND LOOKING TO DRY OUT TONIGHT...THUS SKIES SHOULD BECOME MOSTLY
CLEAR.

SECONDARY LOW-LEVEL BOUNDARY COMING DOWN TUESDAY MAY BRING SCATTERED-
BROKEN SKIES ACROSS THE NORTHERN COUNTIES...ESPECIALLY ALONG THE
PLATEAU. WILL GO WITH PARTLY CLOUDY AND LESS HUMID CONDITIONS.

MUCH COOLER TEMPS ON TAP.

BNA 67/48/69/46 +100
CSV 66/44/63/41 +100

07
.BNA...NONE.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 4:35 AM CDT	Severe Thunderstorm Warning	OHX	Trousdale	25 min
May 13, 4:44 AM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman	46 min
May 13, 4:53 AM CDT	Severe Thunderstorm Warning	OHX	Jackson, Putnam, Smith	52 min
May 13, 5:16 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton, Pickett	44 min
May 13, 5:46 AM CDT	Severe Thunderstorm Warning	OHX	Fentress, Pickett	29 min
May 13, 5:57 AM CDT	Flash Flood Warning	OHX	Cheatham, Davidson, Dickson, Hickman, Humphreys, Rutherford and 5 more	3 hr
May 13, 6:04 AM CDT	Severe Thunderstorm Warning	OHX	Cannon	41 min
May 13, 10:01 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Robertson	29 min
May 13, 10:08 AM CDT	Severe Thunderstorm Warning	OHX	Davidson	27 min
May 13, 10:19 AM CDT	Severe Thunderstorm Warning	OHX	Williamson	41 min
May 13, 10:37 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner	28 min
May 13, 10:45 AM CDT	Severe Thunderstorm Warning	OHX	Wilson	45 min
May 13, 11:09 AM CDT	Severe Thunderstorm Warning	OHX	Franklin	51 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.