Alert archive / Texas / Tornado Warnings in 1999

Tornado Warning 47, NWS Lubbock, TX

June 11, 1999Crosby County, Texas

NWS Lubbock, TX issued this tornado warning at Jun 11, 1999, 6:56 PM CDT for Crosby County, Texas. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jun 11, 1999, 6:56 PM CDT (23:56 UTC)
Expired
Jun 11, 1999, 8:00 PM CDT
In force
64 min
Issued by
NWS Lubbock, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Crosby County, TX

The radar

The Lubbock radar (KLBB), 52 km from the middle of the area, began a volume at 23:56 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
Jun 11, 3:35 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.9 hours before the alert went out and 174 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 1999-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 795 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 1999-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 178 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
795 J/kg
Mixed-layer CIN
-262 J/kg
Mixed-layer LCL
1098 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
178 m²/s²
0-3 km storm-relative helicity
381 m²/s²
Significant tornado parameter
0.0
Supercell composite
9.7

Open this sounding in Storm Lab

The text

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

417 
WFUS1 KLBB 120001 RRA
TORLBB
TXC107-120100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LUBBOCK TX
656 PM CDT FRI JUN 11 1999

THE NATIONAL WEATHER SERVICE IN LUBBOCK HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN CROSBY COUNTY IN NORTHWEST TEXAS

* UNTIL 800 PM CDT

* AT 651 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR AND SEVERE 
THUNDERSTORMS WITH A TORNADO JUST NORTH OF CROSBYTON MOVING SOUTH AT 
15 MPH.  SPOTTERS REPORTED A TORNADO ON THE GROUND WITH THIS STORM 
AT 650 PM.

* SOME LOCATIONS IN OR NEAR THE PATH OF THE TORNADO INCLUDE
  CROSBYTON.

THIS IS AN EXTREMELY DANGEROUS AND POTENTIALLY LIFE THREATENING
SITUATION. IF YOU ARE IN THE PATH OF THIS TORNADO...TAKE COVER
IMMEDIATELY

LAT...LON 3383 10126 3377 10140 3350 10128 3361 10107

The office that day

Everything else NWS Lubbock, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 10, 7:14 PM CDTSevere Thunderstorm WarningLUBFloyd46 min
Jun 10, 7:30 PM CDTSevere Thunderstorm WarningLUBCottle30 min
Jun 10, 7:58 PM CDTSevere Thunderstorm WarningLUBMotley47 min
Jun 10, 8:15 PM CDTSevere Thunderstorm WarningLUBCrosby45 min
Jun 10, 8:43 PM CDTSevere Thunderstorm WarningLUBMotley32 min
Jun 10, 8:59 PM CDTSevere Thunderstorm WarningLUBCrosby, Dickens46 min
Jun 10, 9:08 PM CDTSevere Thunderstorm WarningLUBStonewall52 min
Jun 10, 9:15 PM CDTSevere Thunderstorm WarningLUBKing60 min
Jun 10, 9:29 PM CDTSevere Thunderstorm WarningLUBKent61 min
Jun 10, 11:23 PM CDTSevere Thunderstorm WarningLUBStonewall22 min
Jun 11, 1:34 PM CDTSevere Thunderstorm WarningLUBSwisher56 min
Jun 11, 2:28 PM CDTSevere Thunderstorm WarningLUBBriscoe62 min
Jun 11, 3:12 PM CDTSevere Thunderstorm WarningLUBFloyd63 min
Jun 11, 3:27 PM CDTSevere Thunderstorm WarningLUBBriscoe33 min
Jun 11, 3:41 PM CDTSevere Thunderstorm WarningLUBMotley64 min
Jun 11, 4:08 PM CDTTornado WarningLUBFloyd52 min
Jun 11, 4:42 PM CDTSevere Thunderstorm WarningLUBYoakum63 min
Jun 11, 4:45 PM CDTTornado WarningLUBMotley45 min
Jun 11, 4:54 PM CDTSevere Thunderstorm WarningLUBCochran66 min
Jun 11, 4:59 PM CDTSevere Thunderstorm WarningLUBFloyd46 min
Jun 11, 5:18 PM CDTTornado WarningLUBFloyd42 min
Jun 11, 5:24 PM CDTSevere Thunderstorm WarningLUBTerry66 min
Jun 11, 5:28 PM CDTSevere Thunderstorm WarningLUBCastro62 min
Jun 11, 5:35 PM CDTFlash Flood WarningLUBFloyd, Motley2 hr
Jun 11, 5:40 PM CDTSevere Thunderstorm WarningLUBBailey, Hockley, Lamb50 min
Jun 11, 5:49 PM CDTSevere Thunderstorm WarningLUBHale, Lubbock71 min
Jun 11, 6:09 PM CDTSevere Thunderstorm WarningLUBParmer51 min
Jun 11, 6:11 PM CDTTornado WarningLUBCrosby, Floyd49 min
Jun 11, 6:16 PM CDTSevere Thunderstorm WarningLUBDickens59 min
Jun 11, 6:23 PM CDTSevere Thunderstorm WarningLUBTerry52 min
Jun 11, 6:49 PM CDTTornado WarningLUBLubbock41 min
Jun 11, 6:59 PM CDTSevere Thunderstorm WarningLUBLynn61 min

Nearby

Tornado Warnings in Texas, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.