Alert archive / Tennessee / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 77, NWS Nashville, TN

May 1, 2002Montgomery County, Robertson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 1, 2002, 2:48 AM CDT for Montgomery County, Robertson County, Tennessee. It was in force for 27 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: May 1, 2002, 2:48 AM CDT (07:48 UTC)
Expired: May 1, 2002, 3:15 AM CDT
In force: 27 min
Issued by: NWS Nashville, TN
Area: Whole counties

Counties Montgomery County, TN, Robertson County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 7.8 hours before the alert went out and 63 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: 10 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 708 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 209 m²/s²
0-3 km storm-relative helicity: 240 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.

000 
WUUS54 KOHX 010748
SVRBNA
TNC125-147-010815-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
248 AM CDT WED MAY 1 2002

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

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

* UNTIL 315 AM CDT

* AT 245 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 19 MILES WEST OF GUTHRIE...OR 6 MILES NORTHWEST
  OF OAK GROVE...MOVING SOUTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GUTHRIE AROUND 305 AM CDT
  ADAMS AROUND 315 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 3686 8754 3669 8762 3646 8695 3667 8685

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 May 1, 2:30 AM CDT, 18 minutes earlier.

Area forecast discussion, May 1, 2:30 AM CDT, 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
230 AM CDT WED MAY 1 2002

BUSY SHIFT AND NOT MUCH TIME TO LOOK AT ANYTHING BUT RADAR AS
WARNINGS ARE FLYING OUT OF HERE IN A HURRY. ONE REPORT FROM A
SPOTTER EARLIER OF 70 MPH AS STORM RACED THROUGH THE MAURY COUNTY
AREA. LARGE HAIL AND WIND DAMAGE HAS ALSO BEEN A PROBLEM WITH MANY
OF THESE STORMS. VISIBLE LIGHTNING HAS BEEN WHITE IN NATURE WHICH
GENERALLY IS RESERVED FOR THE MORE INTENSE STORMS.

ANOTHER ROUND OF STORMS STARTING TO FIRE ALONG BOUNDARY IN FAR
WESTERN KENTUCKY PER SATELLITE AND DOPPLER RADARS. THICKNESS WOULD
WORK STORMS DOWN INTO MID STATE SHORTLY. SOME OF THESE WILL BE
SEVERE WITH DAMAGING WINDS AND LARGE HAIL.

AM VERY MUCH CONCERNED WITH LATER TODAY AND TONIGHT AS THERMODYNAMICS
BECOME VERY UNSTABLE OVER MIDDLE TENNESSEE AS BY 00Z THIS EVENING THE
SWEAT INDEX JUMPS TO NEAR 400 AND TO 448 BY MIDNIGHT AS LOW LEVEL SHEAR
INCREASES. HODOGRAPH AT 06Z TONIGHT LOOKS LIKE A TROUT LINE WITH 0-3 KM
VALUES AROUND 585 M2/S2. POSITIVE ENERGY REALLY CLIMBS THIS AFTERNOON
AND TONIGHT WITH SOME INDICATIONS OF CAPE IN EXCESS OF 4000 J/KG AROUND
00Z. I THINK ANYTHING THAT FIRES THIS AFTERNOON AND TONIGHT WILL BE SEVERE
AND TORNADIC SUPERCELLUAR IN NATURE.

HAVE GINNED UP FORECAST IN IFPS BUT HAVE MADE ONLY MINOR TWEAKS AND
KEPT THE GENERAL THEME OF THE DAYSHIFT FORECAST.

PRELIMINARY NUMBERS:
NASHVILLE  81 64 75 50 70 46  5640
CROSSVILLE 76 63 74 46 69 44  5460

.BNA...NONE.
BOYD
01

In the hours before

Local storm report, Apr 30, 11:15 PM CDT, 3 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE,TN
1115 PM CDT TUE APR 30 2002

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

0930 PM    NEAR BON AQUA             TN   PEA SIZE HAIL
04/30/02   HICKMAN                        REPORTED BY TRAINED
                                          SPOTTER

1000 PM    7 E PULASKI               TN   PEA SIZE HAIL
04/30/02   GILES                          REPORTED BY MOTORIST

1012 PM    NEAR LAWRENCEBURG         TN   1.75 INCH HAIL
04/30/02   LAWRENCE                       AT HIGHWAY 64 AND
                                          WEST POINT ROAD
                                          REPORTED BY TRAINED
                                          SPOTTER

1018 PM    NEAR LAWRENCEBURG         TN   1.75 INCH HAIL
04/30/02   LAWRENCE                       ON HIGHWAY 43
                                          REPORTED BY TRAINED
                                          SPOTTER

1032 PM    IN LAWRENCEBURG           TN   2.00 INCH HAIL
04/30/02   LAWRENCE                       REPORTED BY TRAINED
                                          SPOTTER

1035 PM    LAWRENCEBURG              TN   1.00 INCH HAIL
04/30/02   LAWRENCE                       REPORTED BY LOCAL
                                          CITIZEN

DM

Local storm report, May 1, 12:30 AM CDT, 2 hours 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE,TN
1230 AM CDT WED MAY 1 2002

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

1045 PM    AT MINOR HILL             TN   2.00 INCH HAIL BUSTED
04/30/02   GILES                          A WINDSHIELD AT MINOR HILL

0945 PM    6 E WAYNESBORO            TN   WIND DAMAGE
04/30/02   WAYNE                          LAW ENFORCEMENT REPORTED
                                          TREES AND POWER LINES DOWN
                                          AND ONE HOME DAMAGED SOUTH
                                          OF HIGHWAY 64, EAST OF
                                          WAYNESBORO, AT NATCHEZ
                                          TRACE.

1124 PM    7 N WAVERLY               TN   .75 INCH HAIL
04/30/02   HUMPHREYS

1130 PM    IN MCEWEN                 TN   WIND DAMAGE
04/30/02   HUMPHREYS                      TRAINED SPOTTER REPORTED
                                          TWO LARGE TREES DOWN.

1148 PM    IN CENTERVILLE            TN   .75 INCH HAIL
04/30/02   HICKMAN

1200 AM    10 W CENTERVILLE          TN   1.75 INCH HAIL
05/01/02   HICKMAN                        REPORTED BY TRAINED
                                          SPOTTER IN WESTERN
                                          HICKMAN COUNTY

DM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 9:07 PM CDT	Severe Thunderstorm Warning	OHX	Lewis, Perry, Wayne	38 min
Apr 30, 9:27 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence	33 min
Apr 30, 9:57 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence, Wayne	48 min
Apr 30, 10:19 PM CDT	Severe Thunderstorm Warning	OHX	Giles	41 min
Apr 30, 10:28 PM CDT	Tornado Warning	OHX	Giles, Lawrence	32 min
Apr 30, 10:59 PM CDT	Severe Thunderstorm Warning	OHX	Benton	31 min
Apr 30, 11:10 PM CDT	Severe Thunderstorm Warning	OHX	Houston, Humphreys, Stewart	50 min
Apr 30, 11:23 PM CDT	Tornado Warning	OHX	Humphreys	22 min
Apr 30, 11:30 PM CDT	Severe Thunderstorm Warning	OHX	Dickson	45 min
Apr 30, 11:50 PM CDT	Tornado Warning	OHX	Hickman, Humphreys, Perry	40 min
Apr 30, 11:54 PM CDT	Severe Thunderstorm Warning	OHX	Maury, Williamson	51 min
Apr 30, 11:58 PM CDT	Severe Thunderstorm Warning	OHX	Davidson	47 min
May 1, 12:19 AM CDT	Severe Thunderstorm Warning	OHX	Cannon, Rutherford	26 min
May 1, 12:23 AM CDT	Tornado Warning	OHX	Hickman, Maury	22 min
May 1, 12:40 AM CDT	Tornado Warning	OHX	Bedford, Marshall	35 min
May 1, 12:47 AM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Smith, Wilson	58 min
May 1, 12:57 AM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Warren	33 min
May 1, 1:07 AM CDT	Tornado Warning	OHX	Coffee, Franklin, Moore	28 min
May 1, 1:10 AM CDT	Severe Thunderstorm Warning	OHX	Lincoln	35 min
May 1, 1:20 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Putnam, Van Buren, White	40 min
May 1, 1:30 AM CDT	Tornado Warning	OHX	Franklin	30 min
May 1, 1:34 AM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Warren	41 min
May 1, 3:13 AM CDT	Severe Thunderstorm Warning	OHX	Robertson, Sumner	47 min
May 1, 3:45 AM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Smith, Sumner, Wilson	30 min
May 1, 4:21 AM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Putnam, Smith, Van Buren, Warren and 2 more	39 min
May 1, 4:24 AM CDT	Severe Thunderstorm Warning	OHX	Jackson, Overton	36 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; the sounding from the Mesonet's radiosonde archive.