Alert archive / Tennessee / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 21, NWS Nashville, TN

January 17, 1999Jackson County, Putnam County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jan 17, 1999, 8:59 PM CST for Jackson County, Putnam County, Tennessee. It was in force for 61 min. 4 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, 8:59 PM CST (02:59 UTC)
Expired
Jan 17, 1999, 10:00 PM CST
In force
61 min
Issued by
NWS Nashville, TN
Area
Whole counties

Counties Jackson County, TN, Putnam County, TN

The radar

The Nashville radar (KOHX), 88 km from the middle of the area, began a volume at 03:03 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, 9:17 PM CSTHail 0.88Baxter, TNNickel size hail reported.
Jan 17, 9:40 PM CSTHail 1.75Gainesboro Arpt, TNGolf ball size hail observed.
Jan 17, 9:45 PM CSTThunderstorm Wind 50Gainesboro, TNTrees and power lines were down.
Jan 17, 9:55 PM CSTThunderstorm Wind 50Cookeville, TNPower lines were down.

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, 3.0 hours before the alert went out and 92 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.

000 
TTAA00 KBNA 180259 RRA
SVRBNA
TNC027-031-087-141-177-180400-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
859 PM CST SUN JAN 17 1999

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLAY COUNTY IN MIDDLE TENNESSEE
  COFFEE COUNTY IN MIDDLE TENNESSEE
  JACKSON COUNTY IN MIDDLE TENNESSEE
  PUTNAM COUNTY IN MIDDLE TENNESSEE
  WARREN COUNTY IN MIDDLE TENNESSEE

* UNTIL 1000 PM CST

* AT 900 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS...MOVING EAST AT 50 MPH.

  DAMAGING WINDS...LARGE HAIL AND DANGEROUS LIGHTNING CAN BE
  EXPECTED WITH THE PASSAGE OF THESE STORMS.H

GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! A TORNADO
WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

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, 8:15 PM CSTTornado WarningOHXSumner, Wilson50 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 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

Severe Thunderstorm Warnings in Tennessee, 1999Every severe thunderstorm warning 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.