Alert archive / Tennessee / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 142, NWS Nashville, TN

July 7, 1996Humphreys County, Perry County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 7, 1996, 8:27 PM CDT for Humphreys County, Perry County, Tennessee. It was in force for 33 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
Jul 7, 1996, 8:27 PM CDT (01:27 UTC)
Expired
Jul 7, 1996, 9:00 PM CDT
In force
33 min
Issued by
NWS Nashville, TN
Area
Whole counties

Counties Humphreys County, TN, Perry County, TN

The radar

The Ft Campbell radar (KHPX), 110 km from the middle of the area, began a volume at 01:30 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
Jul 7, 8:50 PM CDTThunderstorm WindWaverly, 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 00:00Z, 1.5 hours before the alert went out and 114 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 00:00Z on 1996-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1207 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 00:00Z on 1996-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.1939Sfc1 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
1207 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
1109 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.1

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 Jul 7, 7:44 PM CDT, 43 minutes earlier.

Area forecast discussion, Jul 7, 7:44 PM CDT, 43 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NASHVILLE TN
745 PM CDT SUN JUL 7 1996

00Z SOUNDING SHOWS HI INSTABILITY OVR BNA THIS PM. DO NOT BLV THAT THE
LN OF TRW MOVG EWD FM WRN TN WL DIE OUT ANY TIME SOON. QUICK LUK AT 12Z
MODELS SHOWS THAT NGM IS VERIFYING WELL SO FAR. MOS GUID VALUES LUK
REASONABLE...XCPT FOR HI MON. BLV MOS A COUPLE OF DEGREES TOO WM.

AS FOR CURNT ZNS...BLV POPS ACRS MID TN...ESP NRN HALF FM TN RIVER TO
BNA SHUD BE INCREASED TO AT LEAST 60 PCT. SUGGEST UPPER 80S OR NR 90
DEGREES FOR HI TMRW. OTRW...NO FURTHER CHANGES NEEDED.

ROSE

In the hours before

Local storm report, Jul 7, 3:35 PM CDT, 4 hours 52 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 7:58 PM CDTSevere Thunderstorm WarningOHXBenton47 min
Jul 7, 8:07 PM CDTSevere Thunderstorm WarningOHXDecatur38 min
Jul 7, 8:27 PM CDTSevere Thunderstorm WarningOHXWayne33 min
Jul 7, 8:48 PM CDTSevere Thunderstorm WarningOHXHickman, Lawrence, Lewis42 min
Jul 7, 9:03 PM CDTSevere Thunderstorm WarningOHXDickson42 min
Jul 7, 9:05 PM CDTSevere Thunderstorm WarningOHXMaury55 min
Jul 7, 9:26 PM CDTSevere Thunderstorm WarningOHXWilliamson49 min
Jul 7, 9:26 PM CDTSevere Thunderstorm WarningOHXGiles49 min
Jul 7, 9:37 PM CDTSevere Thunderstorm WarningOHXHickman38 min
Jul 7, 9:49 PM CDTSevere Thunderstorm WarningOHXLincoln, Marshall41 min
Jul 7, 10:10 PM CDTSevere Thunderstorm WarningOHXBedford50 min
Jul 8, 1:47 PM CDTSevere Thunderstorm WarningOHXBenton, Houston, Humphreys58 min
Jul 8, 2:16 PM CDTSevere Thunderstorm WarningOHXDickson, Hickman59 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.