Alert archive / Tennessee / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 253, NWS Nashville, TN

July 4, 1997Wayne County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 4, 1997, 2:03 PM CDT for Wayne County, Tennessee. It was in force for 57 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: Jul 4, 1997, 2:03 PM CDT (19:03 UTC)
Expired: Jul 4, 1997, 3:00 PM CDT
In force: 57 min
Issued by: NWS Nashville, TN
Area: Whole counties

County Wayne County, TN

What was reported inside it

Time	Report	Where	Remark
Jul 4, 2:50 PM CDT	Thunderstorm Wind 50	Collinwood, TN	Local law enforcement reported several trees were blown down at Collinwood and also around the county.
Jul 4, 2:55 PM CDT	Hail 1.75	Woodlawn, TN	EMA reported nickel to golf ball size hail.

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 12:00Z, 7.1 hours before the alert went out and 146 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: 38 J/kg
Mixed-layer CIN: -403 J/kg
Mixed-layer LCL: 932 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: -74 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBNA 041904 RRA
SVRBNA
TNC181-042000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
203 PM CDT FRI JUL 4 1997
 
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN MIDDLE TENNESSEE
 
   ...WAYNE COUNTY
 
AT 202 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 5
MILES NORTHWEST OF SAVANNA. THE STORM WAS MOVING EAST AT AROUND 25
MPH...AND WILL REACH HOUSTON BY 230 PM AND TO HIGHLAND BY 245 PM. YOU
SHOULD TAKE COVER IMMEDIATELY. THIS STORM WILL LIKELY PRODUCE LARGE HAIL
AND DAMAGING WINDS.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
TT

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 Jul 4, 2:00 PM CDT, 3 minutes earlier.

Area forecast discussion, Jul 4, 2:00 PM CDT, 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
200 PM CDT FRI JUL 4 1997

MAIN FCST PROBLEM THIS AFTN WL BE FNTL BNDRY MOVG SEWD INTO MID TN.
18Z SFC AND ADAP ANALYSIS HAS BNDRY EXTENDING FM NE OF FA ACRS CNTRL KY
TO NR MEM W/SFC LO ACRS SRN PTN OF FA. GO ALNG W/SVR TSTM WATCH FOR FA
ROUGHLY FM DEKALB TO S AND SW OF BNA AS PER DISCUSSION W/SPC.

ATMOSPHERE CONTS TO DESTABILIZE ACRS FA ERLY THIS AFTN AS DECENT FNTL
BNDRY CONTS TO SLOWLY MOVE SEWD INTO FA. MID LVL DRYING AND STG MID LVL
FLOW WL CONTRIBUTE TO SCTD TSRA THAT WL CONT TO DVLP W/A FEW BECOMING
SVR.  MAIN THREAT WL BE DOWNBURST AND OUTFLOW WNDS.

AFT PCPN AREA MOVES OUT OF FA THIS EVE...WL BE DRIER AND COOLER WX FOR
FA FOR REST OF WEEKEND.

AS FOR POPS...WL GO CLOSE TO GUID FOR FA MNLY E OF BNA AND PLATEAU FOR
EVE.
AS FOR TEMPS...NGM/FAN CLOSE TNGT AND SAT AND GNRLY ACCEPTED. AS FOR
SAT NGT...WL GO W/FAN AND FOR SUNDAY...MDLS ACCEPTED.
TROUTMAN

In the hours before

Local storm report, Jul 4, 8:30 AM CDT, 5 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
830 AM CDT FRI JUL 4 1997

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

0445 AM    PLEASANTVIEW              TN   WIND DAMAGE
07/04/97   CHEATHAM                       SEVERAL TREES AND POWER LINES
                                          DOWN. REPORTED BY LOCAL
                                          ELECTRIC COMPANY.

TROUTMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 3:37 AM CDT	Severe Thunderstorm Warning	OHX	Stewart	38 min
Jul 4, 3:57 AM CDT	Severe Thunderstorm Warning	OHX	Montgomery	48 min
Jul 4, 4:30 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Robertson	45 min
Jul 4, 4:54 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Sumner	51 min
Jul 4, 5:22 AM CDT	Severe Thunderstorm Warning	OHX	Wilson	53 min
Jul 4, 5:40 AM CDT	Severe Thunderstorm Warning	OHX	Smith	50 min
Jul 4, 3:00 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Rutherford	45 min
Jul 4, 3:14 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Lawrence	61 min
Jul 4, 3:22 PM CDT	Severe Thunderstorm Warning	OHX	Warren	53 min
Jul 4, 3:40 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Coffee	50 min
Jul 4, 3:40 PM CDT	Severe Thunderstorm Warning	OHX	Marshall	50 min
Jul 4, 3:53 PM CDT	Severe Thunderstorm Warning	OHX	Lincoln, Moore	52 min
Jul 4, 3:53 PM CDT	Severe Thunderstorm Warning	OHX	Van Buren	52 min
Jul 4, 4:25 PM CDT	Severe Thunderstorm Warning	OHX	Franklin	50 min
Jul 4, 4:25 PM CDT	Severe Thunderstorm Warning	OHX	Bledsoe	50 min
Jul 4, 4:41 PM CDT	Severe Thunderstorm Warning	OHX	Grundy, Marion	64 min
Jul 4, 4:57 PM CDT	Severe Thunderstorm Warning	OHX	Sequatchie	48 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1997 Every severe thunderstorm warning in 1997

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.