Alert archive / Texas / Tornado Warnings in 1999

Tornado Warning 9, NWS Lubbock, TX

May 1, 1999Castro County, Texas

NWS Lubbock, TX issued this tornado warning at May 1, 1999, 6:06 PM CDT for Castro County, Texas. It was in force for 34 min. 2 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
May 1, 1999, 6:06 PM CDT (23:06 UTC)
Expired
May 1, 1999, 6:40 PM CDT
In force
34 min
Issued by
NWS Lubbock, TX
Area
Whole counties

County Castro County, TX

The radar

The Amarillo radar (KAMA), 93 km from the middle of the area, began a volume at 23:08 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
May 1, 6:09 PM CDTTornado F0Sunnyside, TXA brief tornado touchdown in open county was reported by trained storm spotters. No survey was conducted.
May 1, 6:18 PM CDTTornado F0Dimmitt, TXA brief tornado touchdown in open country was reported by law enforcement officials and by storm spotters. No survey was conducted.

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
May 1, 5:00 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.1 hours before the alert went out and 93 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 1999-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 1999-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
629 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBB 012306
TORLBB

TXC069-012340-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LUBBOCK TX
606 PM CDT SAT MAY 1 1999

THE NATIONAL WEATHER SERVICE IN LUBBOCK HAS ISSUED A

* TORNADO WARNING FOR...
  CASTRO COUNTY IN THE TEXAS PANHANDLE

* UNTIL 640 PM CDT

* AT 604 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES SOUTH
  OF DIMMITT... MOVING NORTHEAST AT 30 MPH.

  THE SHERIFFS OFFICE IN CASTRO COUNTY REPORTED A FUNNEL CLOUD EAST
  OF SUNNYSIDE.

* THE FOLLOWING LOCATION(S) MAY BE AFFECTED BY THIS TORNADO...
         NAZARETH

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




&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 8:00 PM CDTSevere Thunderstorm WarningLUBTerry50 min
Apr 30, 8:03 PM CDTFlash Flood WarningLUBHale, Hockley4 hr
Apr 30, 8:58 PM CDTSevere Thunderstorm WarningLUBLynn, Terry32 min
Apr 30, 9:25 PM CDTFlash Flood WarningLUBSwisher4 hr
Apr 30, 9:29 PM CDTSevere Thunderstorm WarningLUBLynn46 min
Apr 30, 9:40 PM CDTFlash Flood WarningLUBLubbock3 hr
Apr 30, 11:02 PM CDTFlash Flood WarningLUBCrosby, Floyd3 hr
May 1, 3:56 PM CDTSevere Thunderstorm WarningLUBCochran34 min
May 1, 4:52 PM CDTTornado WarningLUBBailey33 min
May 1, 5:07 PM CDTTornado WarningLUBLamb33 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.