Alert archive / Tennessee / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 231, NWS Nashville, TN

September 23, 2001Montgomery County, Stewart County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Sep 23, 2001, 8:38 PM CDT for Montgomery County, Stewart County, Tennessee. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 23, 2001, 8:38 PM CDT (01:38 UTC)
Expired: Sep 23, 2001, 9:15 PM CDT
In force: 37 min
Issued by: NWS Nashville, TN
Area: Whole counties

Counties Montgomery County, TN, Stewart County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.6 hours before the alert went out and 99 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: 1221 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1599 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

914 
WUUS54 KOHX 240141
SVRBNA
TNC125-161-240215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
838 PM CDT SUN SEP 23 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL STEWART COUNTY IN TENNESSEE
  NORTHERN MONTGOMERY COUNTY IN TENNESSEE
  THIS INCLUDES THE CITY OF CLARKSVILLE

* UNTIL 915 PM CDT

* AT 830 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 18 MILES WEST OF CLARKSVILLE...OR ABOUT 15
  MILES SOUTHWEST OF FORT CAMPBELL...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CLARKSVILLE AT 915 PM CDT

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...DAMAGING HAIL...AND DEADLY
LIGHTNING.

$$

LAT...LON 3656 8776 3640 8767 3651 8725 3672 8735

JLM

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 Sep 23, 1:50 PM CDT, 6 hours 48 minutes earlier.

Area forecast discussion, Sep 23, 1:50 PM CDT, 6 hours 48 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
150 PM CDT SUN SEP 23 2001

A FEW TSTMS POPPING UP IN SOUTHERN AND WESERN MIDDLE TN, AS AIR MASS
OVER THE MID-STATE DESTABILIZES. HOWEVER, BEST CHANCE FOR SHRA AND
TSRA WILL BE AFTER SUNSET, AS PRE-FRONTAL TROF AND CDFNT MOVE
INTO THE FA.

AT 18Z, CDFNT STRETCHED FROM NEAR CHI TO SWRN MO AND SWRN OK.
PRE-FRONTAL TROF WAS OBSERVED FROM CHI INTO MO BOOTHEEL AND NERN
TX. TSTMS HAVE DEVELOPED TODAY INVOF BOTH CONVERGENCE BOUNDARIES,
OVER MO (ALONG CDFNT) AND OVER SERN TX AND WRN LA (ALONG PRE-FRONTAL
TROF). AS CHANNEL OF DEEP RH DEVELOPS OVER LOWER AND MID MS VALLEY
AND PUSHES IN AHEAD OF CDFNT TONIGHT, LOOK FOR NUMEROUS SHRA AND
TSRA TO INVADE THE MID-STATE. WILL PROBABLY KEEP ZFP POPS MORE IN
LINE WITH THE WETTER AVN TONIGHT, AND GO CLOSE WITH AVN AND NGM
MOS POPS FOR MONDAY, AS PRECIP DIMINISHES.

WRAP-AROUND MOISTURE BEHIND THIS CDFNT IS EXEMPLARY OF OUR MOVEMENT
INTO THE COOL SEASON, AND LATEST MODEL DATA SUGGESTS LOW CLOUDS
COULD LINGER OVER MUCH OF OUR FA WELL INTO MONDAY NIGHT AND INTO
TUESDAY MORNING AS WELL. 1000-850MB MOISTURE REMAINS AOA 70% OVER
ABOUT THE EASTERN TWO-THIRDS OF OUR FA THROUGH 12Z TUE, WITH NGM
ISENTROPIC PLOTS (USING 285K) INDICATING A BKN-OVC LAYER OF LOW
CLOUDS OVER THE SAME GENERAL AREA. THUS, WILL PROBABLY TREND CLOUDY
CONDITIONS A LTL LONGER THAN PREV FCST PACKAGE AND GO FOR PARTIAL
CLEARING AFTER MIDNIGHT IN THE BNA VCNTY AND CLOUDY CONDITIONS FOR
THE PLATEAU ALL THE WAY THROUGH EARLY TUESDAY MORNING.

OTHERWISE, WILL PROBABLY MAKE JUST MINOR MODIFICATIONS TO CURRENT
ZFP.

LOOK FOR A SGFNT TREND TOWARD AUTUMN WX ON TUESDAY, AS SUNSHINE
RETURNS, BUT FAILS TO WARM US OUT OF THE 60S ALSO, CANT RULE OUT
SOME MIN TEMPS IN THE UPPER 30S IN OUTLYING AREAS BY WEDNESDAY AND
THURSDAY MORNING (BRRR).

BNA CU 061/066 048/066 043 1983-
CSV CB 059/063 043/060 039 19861

.BNA...NONE.

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 23, 8:51 PM CDT	Severe Thunderstorm Warning	OHX	Marshall, Maury	24 min
Sep 23, 9:06 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner, Wilson	24 min
Sep 23, 9:51 PM CDT	Severe Thunderstorm Warning	OHX	Rutherford	24 min
Sep 23, 10:17 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Maury	28 min
Sep 23, 10:50 PM CDT	Severe Thunderstorm Warning	OHX	Maury, Williamson	25 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2001 Every severe thunderstorm warning in 2001

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.