Alert archive / Tennessee / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 46, NWS Nashville, TN

May 7, 2001Sumner County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 7, 2001, 7:18 PM CDT for Sumner County, Tennessee. It was in force for 17 min. 1 report 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 7, 2001, 7:18 PM CDT (00:18 UTC)
Expired: May 7, 2001, 7:35 PM CDT
In force: 17 min
Issued by: NWS Nashville, TN
Area: Whole counties

County Sumner County, TN

What was reported inside it

Time	Report	Where	Remark
May 7, 7:30 PM CDT	Thunderstorm Wind 50 E	Westmoreland, TN	Sheriff's office reported several trees down.

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, 0.3 hours before the alert went out and 40 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: 216 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1538 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 191 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

819 
WUUS54 KOHX 080024 CCA
SVRBNA
TNC165-080035-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED FOR EXPIRATION TIME
NATIONAL WEATHER SERVICE NASHVILLE TN
718 PM CDT MON MAY 7 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN SUMNER COUNTY IN TENNESSEE

* UNTIL 735 PM CDT

* AT 718 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER WESTMORELAND...MOVING EAST AT 60 MPH.

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.
$$
JBW
LAT...LON 3661 8638 3636 8632 3647 8622 3664 8622

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 7, 1:45 PM CDT, 5 hours 33 minutes earlier.

Area forecast discussion, May 7, 1:45 PM CDT, 5 hours 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
145 PM CDT MON MAY 7 2001

SURFACE FRONT DOWN THROUGH CENTRAL ARKANSAS AT EARLY AFTERNOON.
LOOKING AT KNQA DOPPLER SHOWERS AND A FEW THUNDERSTORMS CONTINUE
OVER NORTHEAST ARKANSAS AND IN THE MEMPHIS AREA. ISOLATED SHOWERS
AND THUNDERSTORMS HAVE POPPED UP IN PART OF MIDDLE TENNESSEE MAINLY
WESTERN AREAS.

MODELS IN AGREEMENT IN BRINGING UPPER TROF EASTWARD TONIGHT WITH GOOD
UPWARD VERTICAL MOITION OVER THE AREA. WILL MENTION A FEW STORMS
COULD BE STRONG TONIGHT WITH GUSTY WINDS AND HAIL. FRONTAL SYSTEM
WORKS EASTWARD AND INTO WESTERN TENNESSEE BEFORE MIDNIGHT AND INTO
MIDDLE TENNESSEE ABOUT NASHVILLE AROUND 12Z TUESDAY. MODELS HAVE
FRONT ON PLATEAU AND ACROSS SOUTHERN MIDDLE LATE AFTERNOON TUESDAY.

WILL GO CATEGORICAL FOR TONIGHT MUCH OF MIDDLE WITH LIKELY ON
PLATEAU. WILL KEEP A POP GOING TUESDAY MORNING EXCEPT FOR FAR WESTERN
GROUP WITH LIKELY ON PLATEAU MOST OF DAY. WILL KEEP SMALL POP GOING EARLY
TUESDAY NIGHT FOR PLATEAU GROUP.

PRELIMINARY NUMBERS:
NASHVILLE  58 73 52 77 55  8500
CROSSVILLE 57 66 50 74 53  7730

.BNA...NONE.
BOYD
01

In the hours before

Local storm report, May 7, 7:11 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE,TN
711 PM CDT MON MAY 7 2001

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

0610 PM    3NEFRANKLIN               TN   WIND DAMAGE
05/07/01   WILLIAMSON                     TRAINED SPOTTER REPORTED
                                          TREES BLOWN DOWN NEAR
                                          CONCORD ROAD AND WILSON
                                          PIKE

0630 PM    BRENTWOOD                 TN   WIND DAMAGE
05/07/01   WILLIAMSON                     TRAINED SPOTTER REPORTED
                                          TREES DOWN ACROSS MARYLAND
                                          FARMS ROAD

0630 PM    LAKEWOOD                  TN   WIND DAMAGE
05/07/01   DAVIDSON                       TRAINED SPOTTER REPORTED
                                          TREES BLOWN DOWN ON OLD
                                          HICKORY GOLF COURSE

0630 PM    HENDERSONVILLE            TN   WIND DAMAGE
05/07/01   SUMNER                         TRAINED SPOTTER REPORTED
                                          POWER LINES BLOWN DOWN

0715 PM    3E PORTLAND               TN   .75 INCH HAIL
05/07/01   SUMNER                         TRAINED SPOTTER REPORTED
                                          3/4 INCH HAIL REPORTED JUST
                                          EAST OF PORTLAND

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.