Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 7, NWS Lubbock, TX

April 13, 2002Hockley County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Apr 13, 2002, 4:59 PM CDT for Hockley County, Texas. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 13, 2002, 4:59 PM CDT (21:59 UTC)
Expired
Apr 13, 2002, 5:45 PM CDT
In force
46 min
Issued by
NWS Lubbock, TX
Area
Counties, with a storm outline in the text

County Hockley County, TX

The radar

The Lubbock radar (KLBB), 48 km from the middle of the area, began a volume at 21:59 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
Apr 13, 3:45 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 10.0 hours before the alert went out and 184 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 2002-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1027 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 12:00Z on 2002-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 170 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
1027 J/kg
Mixed-layer CIN
-285 J/kg
Mixed-layer LCL
1742 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
170 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KLUB 132159
SVRLBB
TXC219-132245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LUBBOCK TX
456 PM CDT SAT APR 13 2002

THE NATIONAL WEATHER SERVICE IN LUBBOCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HOCKLEY COUNTY IN NORTHWEST TEXAS
  THIS INCLUDES LEVELLAND...

* UNTIL 545 PM CDT

* AT 456 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR             
  INDICATED SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HAIL UP TO THE  
  SIZE OF GOLFBALLS 12 MILES SOUTH OF LEVELLAND AND 5 MILES EAST     
  OF LEVELLAND...MOVING EAST AT 20 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THE STORM INCLUDE...
  LEVELLAND...
  ROPESVILLE...
  SMYER... 

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE HAIL...DAMAGING
WINDS...DEADLY LIGHTNING...AND HEAVY RAIN.

LAT...LON 3374 10250 3340 10250 3340 10208 3373 10209

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 6:54 AM CDTSevere Thunderstorm WarningLUBSwisher51 min
Apr 13, 3:31 PM CDTSevere Thunderstorm WarningLUBSwisher44 min
Apr 13, 4:15 PM CDTSevere Thunderstorm WarningLUBHale, Swisher45 min
Apr 13, 4:21 PM CDTSevere Thunderstorm WarningLUBHockley39 min
Apr 13, 4:42 PM CDTTornado WarningLUBHale33 min
Apr 13, 4:43 PM CDTSevere Thunderstorm WarningLUBFloyd47 min
Apr 13, 4:47 PM CDTTornado WarningLUBHale28 min
Apr 13, 5:04 PM CDTSevere Thunderstorm WarningLUBTerry, Yoakum41 min
Apr 13, 5:14 PM CDTSevere Thunderstorm WarningLUBHale61 min
Apr 13, 5:47 PM CDTSevere Thunderstorm WarningLUBTerry, Yoakum43 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002

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.