Alert archive / Tennessee / Tornado Warnings in 1999

Tornado Warning 9, NWS Nashville, TN

January 17, 1999Sumner County, Wilson County, Tennessee

NWS Nashville, TN issued this tornado warning at Jan 17, 1999, 8:15 PM CST for Sumner County, Wilson County, Tennessee. It was in force for 50 min. 3 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
Jan 17, 1999, 8:15 PM CST (02:15 UTC)
Expired
Jan 17, 1999, 9:05 PM CST
In force
50 min
Issued by
NWS Nashville, TN
Area
Whole counties

Counties Sumner County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 18 km from the middle of the area, began a volume at 02:17 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
Jan 17, 8:29 PM CSTThunderstorm Wind 50Gallatin, TNSeveral large tree limbs were blown down.
Jan 17, 8:30 PM CSTHail 0.75Gallatin, TNOff duty NWS employee reported dime size hail.
Jan 17, 8:30 PM CSTThunderstorm WindMt Juliet, TNA tree blown was down onto a wooden fence in the back yard of a NWS employee. Shingles were loosened on the roof.

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.

IssuedProductOfficeLasted
Jan 17, 6:30 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.3 hours before the alert went out and 28 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 1999-01-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 687 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 1999-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 352 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
687 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
598 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
352 m²/s²
0-3 km storm-relative helicity
343 m²/s²
Significant tornado parameter
1.4
Supercell composite
7.9

Open this sounding in Storm Lab

The text

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

999 
WFUS54 KOHX 180214 RRA
TORBNA
TNC165-189-180305-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
815 PM CST SUN JAN 17 1999

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SUMNER COUNTY IN MIDDLE TENNESSEE
  WESTERN WILSON COUNTY IN MIDDLE TENNESSEE

* UNTIL 905 PM CST

* AT 813 PM CST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A TORNADO 12 MILES SOUTH OF SPRINGFIELD OR 5 MILES SOUTHWEST OF
  MILLERSVILLE... MOVING EAST AT 50 MPH.

* TORNADO IS EXPECTED TO BE NEAR...
  MILLERSVILLE AT 815 PM CST
  HENDERSONVILLE AT 820 PM CST
  SHACKLE ISLAND AT 825 PM CST
  CAMP BOXWELL RESERVATION AT 830 PM CST
  GALLATIN AT 835 PM CST
  LAGUARDO AT 835 PM CST
  CASTALIAN SPRINGS AT 840 PM CST
  HUNTERS POINT AT 845 PM CST
  CENTERVILLE AT 850 PM CST
  TAYLORSVILLE AT 850 PM CST
  BELLWOOD AT 855 PM CST

  THIS IS A SERIOUS SITUATION...TAKE COVER NOW.

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

BOYD

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 17, 6:23 PM CSTSevere Thunderstorm WarningOHXBenton, Decatur62 min
Jan 17, 6:47 PM CSTTornado WarningOHXDecatur63 min
Jan 17, 6:56 PM CSTSevere Thunderstorm WarningOHXHouston, Stewart59 min
Jan 17, 7:02 PM CSTTornado WarningOHXBenton63 min
Jan 17, 7:10 PM CSTTornado WarningOHXHumphreys, Perry65 min
Jan 17, 7:28 PM CSTTornado WarningOHXMontgomery62 min
Jan 17, 7:31 PM CSTTornado WarningOHXHickman, Lewis64 min
Jan 17, 7:34 PM CSTSevere Thunderstorm WarningOHXWayne61 min
Jan 17, 7:34 PM CSTSevere Thunderstorm WarningOHXDickson61 min
Jan 17, 7:45 PM CSTTornado WarningOHXRobertson45 min
Jan 17, 7:51 PM CSTSevere Thunderstorm WarningOHXMaury, Williamson64 min
Jan 17, 7:51 PM CSTSevere Thunderstorm WarningOHXCheatham, Davidson64 min
Jan 17, 8:02 PM CSTTornado WarningOHXDavidson48 min
Jan 17, 8:05 PM CSTTornado WarningOHXMaury65 min
Jan 17, 8:17 PM CSTSevere Thunderstorm WarningOHXGiles, Marshall, Rutherford63 min
Jan 17, 8:17 PM CSTSevere Thunderstorm WarningOHXWilson63 min
Jan 17, 8:17 PM CSTSevere Thunderstorm WarningOHXLawrence63 min
Jan 17, 8:30 PM CSTTornado WarningOHXWayne50 min
Jan 17, 8:36 PM CSTSevere Thunderstorm WarningOHXMacon, Smith, Trousdale64 min
Jan 17, 8:36 PM CSTSevere Thunderstorm WarningOHXBedford64 min
Jan 17, 8:36 PM CSTSevere Thunderstorm WarningOHXCannon64 min
Jan 17, 8:52 PM CSTTornado WarningOHXLawrence48 min
Jan 17, 8:59 PM CSTSevere Thunderstorm WarningOHXCoffee, Warren61 min
Jan 17, 8:59 PM CSTSevere Thunderstorm WarningOHXJackson, Putnam61 min
Jan 17, 8:59 PM CSTSevere Thunderstorm WarningOHXClay61 min
Jan 17, 9:28 PM CSTSevere Thunderstorm WarningOHXVan Buren, White57 min
Jan 17, 9:28 PM CSTSevere Thunderstorm WarningOHXGiles, Marshall57 min
Jan 17, 9:28 PM CSTSevere Thunderstorm WarningOHXOverton, Pickett57 min
Jan 17, 9:35 PM CSTTornado WarningOHXGiles, Lincoln, Marshall50 min
Jan 17, 9:39 PM CSTSevere Thunderstorm WarningOHXCumberland, Fentress51 min
Jan 17, 9:52 PM CSTSevere Thunderstorm WarningOHXBedford, Lincoln, Moore63 min
Jan 17, 10:24 PM CSTSevere Thunderstorm WarningOHXCoffee36 min
Jan 17, 10:42 PM CSTFlash Flood WarningOHXCoffee, Grundy, Warren93 min
Jan 17, 11:37 PM CSTSevere Thunderstorm WarningOHXFranklin, Grundy48 min

Nearby

Tornado Warnings in Tennessee, 1999Every tornado warning in 1999Tornadoes in 1999

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.