Alert archive / Texas / Tornado Watches in 1999

Tornado Watch 231

May 9, 199911 counties in Oklahoma; 38 counties in Texas

The Storm Prediction Center issued this tornado watch at May 9, 1999, 2:00 PM CDT for 11 counties in Oklahoma; 38 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 9, 1999, 2:00 PM CDT (19:00 UTC)
Expired
May 9, 1999, 8:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 49 counties

Beaver County, OK, Beckham County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Roger Mills County, OK, Texas County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hardeman County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX

Warnings issued inside it

45 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 9, 2:25 PM CDTSevere Thunderstorm WarningLUBLynn, Terry50 min
May 9, 2:29 PM CDTSevere Thunderstorm WarningLUBHockley, Lubbock46 min
May 9, 2:41 PM CDTSevere Thunderstorm WarningLUBLubbock49 min
May 9, 2:44 PM CDTSevere Thunderstorm WarningLUBHale61 min
May 9, 2:47 PM CDTSevere Thunderstorm WarningAMARandall63 min
May 9, 2:55 PM CDTSevere Thunderstorm WarningAMAArmstrong, Carson65 min
May 9, 2:59 PM CDTSevere Thunderstorm WarningLUBSwisher61 min
May 9, 3:10 PM CDTSevere Thunderstorm WarningLUBCrosby, Floyd65 min
May 9, 3:56 PM CDTSevere Thunderstorm WarningAMALipscomb, Ochiltree64 min
May 9, 4:04 PM CDTSevere Thunderstorm WarningAMADonley61 min
May 9, 4:10 PM CDTSevere Thunderstorm WarningLUBLynn50 min
May 9, 4:32 PM CDTSevere Thunderstorm WarningLUBHockley, Lubbock43 min
May 9, 4:59 PM CDTSevere Thunderstorm WarningLUBLynn31 min
May 9, 5:02 PM CDTSevere Thunderstorm WarningAMALipscomb63 min
May 9, 5:07 PM CDTTornado WarningLUBLynn53 min
May 9, 5:13 PM CDTSevere Thunderstorm WarningAMACollingsworth62 min
May 9, 5:19 PM CDTSevere Thunderstorm WarningLUBFloyd41 min
May 9, 5:23 PM CDTTornado WarningLUBGarza52 min
May 9, 5:32 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson43 min
May 9, 5:32 PM CDTSevere Thunderstorm WarningOUNBeckham43 min
May 9, 5:36 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills39 min
May 9, 5:51 PM CDTSevere Thunderstorm WarningLUBMotley39 min
May 9, 5:54 PM CDTSevere Thunderstorm WarningLUBCrosby51 min
May 9, 6:04 PM CDTSevere Thunderstorm WarningOUNWoodward41 min
May 9, 6:12 PM CDTTornado WarningLUBGarza, Kent63 min
May 9, 6:14 PM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Roger Mills46 min
May 9, 6:21 PM CDTSevere Thunderstorm WarningOUNEllis, Harper39 min
May 9, 6:29 PM CDTFlash Flood WarningLUBLubbock2 hr
May 9, 6:30 PM CDTSevere Thunderstorm WarningOUNDewey30 min
May 9, 6:33 PM CDTTornado WarningLUBGarza57 min
May 9, 6:44 PM CDTSevere Thunderstorm WarningOUNHarper, Woods, Woodward46 min
May 9, 6:44 PM CDTSevere Thunderstorm WarningLUBCrosby46 min
May 9, 6:45 PM CDTSevere Thunderstorm WarningOUNGreer, Kiowa30 min
May 9, 6:53 PM CDTSevere Thunderstorm WarningLUBChildress37 min
May 9, 6:56 PM CDTSevere Thunderstorm WarningLUBDickens49 min
May 9, 6:58 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Custer, Dewey, Major47 min
May 9, 7:00 PM CDTFlash Flood WarningLUBCrosby, Garza2 hr
May 9, 7:07 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson38 min
May 9, 7:11 PM CDTTornado WarningLUBCottle, King64 min
May 9, 7:15 PM CDTTornado WarningLUBKent30 min
May 9, 7:29 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Major, Woods31 min
May 9, 7:37 PM CDTTornado WarningLUBDickens38 min
May 9, 7:44 PM CDTSevere Thunderstorm WarningLUBKent46 min
May 9, 7:45 PM CDTSevere Thunderstorm WarningOUNGreer, Jackson, Kiowa, Tillman45 min
May 9, 8:00 PM CDTTornado WarningOUNFoard, Knox45 min

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 7.0 hours before the alert went out and 83 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, Amarillo Airport, TX at 12:00Z on 1999-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1086 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, Amarillo Airport, TX at 12:00Z on 1999-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 221 square meters per square second.193958Sfc1 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
1086 J/kg
Mixed-layer CIN
-314 J/kg
Mixed-layer LCL
1716 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
221 m²/s²
0-3 km storm-relative helicity
268 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 6:30 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Blaine, Caddo, Canadian, Carter, Cleveland and 28 more6 hr
May 9, 4:30 PM CDTTornado WatchSPCAndrews, Borden, Coke, Crane, Crockett, Dawson and 18 more5 hr

Nearby

Tornado Watches in Texas, 1999Tornado Watches in Oklahoma, 1999Every tornado watch 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; the sounding from the Mesonet's radiosonde archive.