Alert archive / Tennessee / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 87, NWS Nashville, TN

April 20, 2000Marshall County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Apr 20, 2000, 6:24 PM CDT for Marshall County, Tennessee. It was in force for 21 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
Apr 20, 2000, 6:24 PM CDT (23:24 UTC)
Expired
Apr 20, 2000, 6:45 PM CDT
In force
21 min
Issued by
NWS Nashville, TN
Area
Whole counties

County Marshall County, TN

The radar

The Northeast Alabama radar (KHTX), 86 km from the middle of the area, began a volume at 23:27 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 20, 5:15 PM CDTTornado WatchSPC4 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.4 hours before the alert went out and 75 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 2000-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2000-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 319 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1180 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
319 m²/s²
0-3 km storm-relative helicity
324 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOHX 202324
SVRBNA
TNC117-202345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
624 PM CDT THU APR 20 2000

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MARSHALL COUNTY IN TENNESSEE

* UNTIL 645 PM CDT

* AT 621 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM ABOUT 6 MILES NORTH OF LEWISBURG...MOVING EAST ?
  AT 55 MPH.

DAMAGIND WINDS AND LARGE HAIL ARE LIKELY WITH THIS STORM. A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 900 PM CDT.
$$

08

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 20, 1:54 PM CDTSevere Thunderstorm WarningOHXRutherford, Wilson51 min
Apr 20, 1:58 PM CDTSevere Thunderstorm WarningOHXWilliamson32 min
Apr 20, 2:28 PM CDTSevere Thunderstorm WarningOHXDeKalb, Smith47 min
Apr 20, 3:06 PM CDTSevere Thunderstorm WarningOHXPutnam24 min
Apr 20, 3:15 PM CDTSevere Thunderstorm WarningOHXOverton30 min
Apr 20, 4:14 PM CDTSevere Thunderstorm WarningOHXDickson31 min
Apr 20, 4:26 PM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Robertson49 min
Apr 20, 4:36 PM CDTTornado WarningOHXCheatham24 min
Apr 20, 4:50 PM CDTTornado WarningOHXDavidson25 min
Apr 20, 4:56 PM CDTSevere Thunderstorm WarningOHXLewis, Wayne34 min
Apr 20, 5:07 PM CDTSevere Thunderstorm WarningOHXWilliamson53 min
Apr 20, 5:13 PM CDTSevere Thunderstorm WarningOHXHickman, Maury17 min
Apr 20, 5:27 PM CDTSevere Thunderstorm WarningOHXMaury48 min
Apr 20, 5:34 PM CDTSevere Thunderstorm WarningOHXMacon, Sumner, Trousdale41 min
Apr 20, 5:39 PM CDTTornado WarningOHXLewis, Maury51 min
Apr 20, 5:49 PM CDTTornado WarningOHXDavidson, Rutherford, Williamson26 min
Apr 20, 6:19 PM CDTTornado WarningOHXWilson26 min
Apr 20, 6:24 PM CDTTornado WarningOHXTrousdale, Wilson36 min
Apr 20, 6:24 PM CDTTornado WarningOHXMacon36 min
Apr 20, 6:37 PM CDTTornado WarningOHXDeKalb23 min
Apr 20, 6:41 PM CDTTornado WarningOHXBedford49 min
Apr 20, 6:54 PM CDTTornado WarningOHXPutnam51 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2000Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.