Alert archive / Tennessee / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 149, NWS Nashville, TN

April 30, 1997Montgomery County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Apr 30, 1997, 9:16 PM CDT for Montgomery County, Tennessee. It was in force for 44 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: Apr 30, 1997, 9:16 PM CDT (02:16 UTC)
Expired: Apr 30, 1997, 10:00 PM CDT
In force: 44 min
Issued by: NWS Nashville, TN
Area: Whole counties

County Montgomery County, TN

What was reported inside it

Time	Report	Where	Remark
Apr 30, 9:25 PM CDT	Hail 0.88	Woodlawn, TN	Weather spotter reported nickel size hail.
Apr 30, 9:33 PM CDT	Hail 0.75	Ft Campbell, TN	Dime size hail reported by weather spotter.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 30, 6:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.3 hours before the alert went out and 81 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: 70 J/kg
Mixed-layer CIN: -236 J/kg
Mixed-layer LCL: 1685 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 308 m²/s²
0-3 km storm-relative helicity: 433 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBNA 010220 RRA
SVRBNA
TNC125-010300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
916 PM CDT WED APR 30 1997
 
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN MIDDLE TENNESSEE
 
   ...MONTGOMERY COUNTY
 
AT 915 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 5
MILES EAST OF BUMPUS MILLS. THE STORM WAS MOVING EAST AT AROUND 45
MPH...AND WILL REACH OAKWOOD AND FORT CAMPBELL BY 925 PM. THIS STORM HAS
A HISTORY OF LARGE HAIL. YOU SHOULD TAKE COVER IMMEDIATELY.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRON$G 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 Apr 30, 7:38 PM CDT, 1 hour 38 minutes earlier.

Area forecast discussion, Apr 30, 7:38 PM CDT, 1 hour 38 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
737 PM CDT WED APR 30 1997

W/BKN LN OF STG/SVR TSRA MVG EWD THRU KY AND DVLP SW INTO WRN TN AS OF
0030Z...WL NOT RECOMMEND ANY CHGS TO GOING FCST. BLV THAT CURRENT
WORDING WELL HANDLES POSSIBILITY OF SVR TSRA TNGT AS CAP CONTS TO
WEAKEN AS OUTFLOW FM TSRA ACRS WRN KY SPRDS TWD FA.

TROUTMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 8:53 PM CDT	Severe Thunderstorm Warning	OHX	Stewart	37 min
Apr 30, 10:30 PM CDT	Severe Thunderstorm Warning	OHX	Robertson	30 min
May 1, 1:40 AM CDT	Severe Thunderstorm Warning	OHX	Coffee, Grundy, Warren	35 min
May 1, 2:00 AM CDT	Severe Thunderstorm Warning	OHX	Bledsoe, Sequatchie, Van Buren	45 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.