Alert archive / Texas / Tornado Watches in 1999

Tornado Watch 274

May 16, 19997 counties in Oklahoma; 36 counties in Texas

The Storm Prediction Center issued this tornado watch at May 16, 1999, 4:15 PM CDT for 7 counties in Oklahoma; 36 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 16, 1999, 4:15 PM CDT (21:15 UTC)
Expired
May 16, 1999, 10:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 43 counties

Comanche County, OK, Cotton County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Borden County, TX, Briscoe County, TX, Callahan County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Donley County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Howard County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lynn County, TX, Martin County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Scurry County, TX, Shackelford County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Lubbock radar (KLBB), 120 km from the middle of the area, began a volume at 21:10 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 16, 4:40 PM CDTSevere Thunderstorm WarningLUBFloyd50 min
May 16, 4:51 PM CDTSevere Thunderstorm WarningLUBCrosby, Garza39 min
May 16, 5:27 PM CDTSevere Thunderstorm WarningLUBCrosby, Dickens48 min
May 16, 5:40 PM CDTSevere Thunderstorm WarningLUBBriscoe, Floyd, Hall, Motley50 min
May 16, 6:05 PM CDTSevere Thunderstorm WarningLUBKent40 min
May 16, 6:08 PM CDTSevere Thunderstorm WarningLUBHall52 min
May 16, 6:10 PM CDTSevere Thunderstorm WarningAMADonley50 min
May 16, 6:13 PM CDTSevere Thunderstorm WarningLUBMotley47 min
May 16, 6:15 PM CDTTornado WarningLUBDickens30 min
May 16, 6:32 PM CDTSevere Thunderstorm WarningLUBCottle43 min
May 16, 6:40 PM CDTSevere Thunderstorm WarningAMACollingsworth50 min
May 16, 6:40 PM CDTTornado WarningLUBKent35 min
May 16, 6:46 PM CDTSevere Thunderstorm WarningLUBDickens, King44 min
May 16, 7:02 PM CDTSevere Thunderstorm WarningLUBChildress28 min
May 16, 7:03 PM CDTSevere Thunderstorm WarningOUNHarmon42 min
May 16, 7:03 PM CDTSevere Thunderstorm WarningOUNGreer42 min
May 16, 7:10 PM CDTTornado WarningLUBKent35 min
May 16, 7:14 PM CDTSevere Thunderstorm WarningLUBCottle46 min
May 16, 7:26 PM CDTTornado WarningLUBDickens, King34 min
May 16, 7:48 PM CDTSevere Thunderstorm WarningLUBStonewall42 min
May 16, 7:54 PM CDTSevere Thunderstorm WarningOUNFoard, Hardeman51 min
May 16, 7:59 PM CDTTornado WarningLUBKing31 min
May 16, 8:37 PM CDTTornado WarningOUNFoard, Hardeman, Wilbarger38 min
May 16, 8:41 PM CDTSevere Thunderstorm WarningLUBDickens49 min
May 16, 8:58 PM CDTSevere Thunderstorm WarningLUBKing32 min
May 16, 9:01 PM CDTSevere Thunderstorm WarningOUNTillman59 min
May 16, 9:15 PM CDTSevere Thunderstorm WarningLUBCottle15 min
May 16, 9:18 PM CDTSevere Thunderstorm WarningOUNWilbarger42 min
May 16, 9:25 PM CDTSevere Thunderstorm WarningOUNFoard50 min
May 16, 9:43 PM CDTSevere Thunderstorm WarningOUNWilbarger47 min

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 9.3 hours before the alert went out and 219 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, Midland Regional, TX at 12:00Z on 1999-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2474 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, Midland Regional, TX at 12:00Z on 1999-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.19395878Sfc1 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
2474 J/kg
Mixed-layer CIN
-146 J/kg
Mixed-layer LCL
1084 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.3

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 16, 6:30 PM CDTTornado WatchSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Custer and 14 more7 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; radar from the NEXRAD Level II archive.