Alert archive / Tennessee / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 55, NWS Nashville, TN

April 29, 1996Williamson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Apr 29, 1996, 2:45 PM CDT for Williamson County, Tennessee. It was in force for 45 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
Apr 29, 1996, 2:45 PM CDT (19:45 UTC)
Expired
Apr 29, 1996, 3:30 PM CDT
In force
45 min
Issued by
NWS Nashville, TN
Area
Whole counties

County Williamson County, TN

The radar

The Nashville radar (KOHX), 50 km from the middle of the area, began a volume at 19:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Apr 29, 3:00 PM CDTThunderstorm WindNolensville, TN

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, 7.8 hours before the alert went out and 38 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 1996-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 204 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 1996-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
204 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
983 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
227 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 29, 1:41 PM CDT, 1 hour 4 minutes earlier.

Area forecast discussion, Apr 29, 1:41 PM CDT, 1 hour 4 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
140 PM CDT MON APR 29 1996

BEEN BUSY W/88D...PHONE...ETC.  HAVE NOT HAD TIME TO LUK AT ANY
DATA AND PROBABLY WONT BE ABLE TO.  SORRY!

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 12:12 PM CDTSevere Thunderstorm WarningOHXDecatur33 min
Apr 29, 1:11 PM CDTSevere Thunderstorm WarningOHXWayne49 min
Apr 29, 1:43 PM CDTSevere Thunderstorm WarningOHXLawrence47 min
Apr 29, 2:05 PM CDTSevere Thunderstorm WarningOHXLewis, Maury55 min
Apr 29, 3:08 PM CDTSevere Thunderstorm WarningOHXDavidson, Rutherford52 min
Apr 29, 3:28 PM CDTSevere Thunderstorm WarningOHXWilson47 min
Apr 29, 3:51 PM CDTSevere Thunderstorm WarningOHXSmith, Trousdale39 min
Apr 29, 4:05 PM CDTSevere Thunderstorm WarningOHXMacon25 min
Apr 29, 4:20 PM CDTSevere Thunderstorm WarningOHXClay25 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1996Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.