Alert archive / Texas / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 16, NWS Lubbock, TX

April 18, 2005Bailey County, Parmer County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Apr 18, 2005, 3:18 PM CDT for Bailey County, Parmer County, Texas. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 18, 2005, 3:18 PM CDT (20:18 UTC)
Expired
Apr 18, 2005, 4:15 PM CDT
In force
57 min
Issued by
NWS Lubbock, TX
Area
Counties, with a storm outline in the text

Counties Bailey County, TX, Parmer County, TX

The radar

The Cannon AFB radar (KFDX), 83 km from the middle of the area, began a volume at 20:21 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 18, 3:10 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.3 hours before the alert went out and 145 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 2005-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 59 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 2005-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 205 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
59 J/kg
Mixed-layer CIN
-319 J/kg
Mixed-layer LCL
1127 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
205 m²/s²
0-3 km storm-relative helicity
237 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lubbock, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 18, 3:15 AM CDT, 12 hours 3 minutes earlier.

Area forecast discussion, Apr 18, 3:15 AM CDT, 12 hours 3 minutes before
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Hazardous weather outlook, Apr 18, 11:30 AM CDT, 3 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LUBBOCK TX
1130 AM CDT MON APR 18 2005

TXZ021>044-191630-
BAILEY-BRISCOE-CASTRO-CHILDRESS-COCHRAN-COTTLE-CROSBY-DICKENS-FLOYD-
GARZA-HALE-HALL-HOCKLEY-KENT-KING-LAMB-LUBBOCK-LYNN-MOTLEY-PARMER-
STONEWALL-SWISHER-TERRY-YOAKUM-
1130 AM CDT MON APR 18 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EXTREME SOUTHERN TEXAS
PANHANDLE...SOUTH PLAINS AND ROLLING PLAINS.

.DAY ONE...

CONVECTIVE

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE
EXTREME SOUTHERN PANHANDLE...SOUTH PLAINS AND ROLLING PLAINS LATE
THIS AFTERNOON INTO THE EVENING. THIS AREA IS GENERALLY ALONG AND
EAST OF A DIMMITT TO BROWNFIELD LINE.

THE DRYLINE IS EXPECTED TO SLOWLY MIX EASTWARD INTO THE CENTRAL
SOUTH PLAINS THROUGH THE AFTERNOON AS THE LOW LEVEL CLOUD COVER
ERODES. CONVERGENCE ALONG THE DRYLINE MAY BE ENOUGH TO INITIATE A
FEW THUNDERSTORMS. MODERATE INSTABILITY IN THE MIDDLE LEVELS OF THE
ATMOSPHERE AND A PIECE OF JET ENERGY PASSING THROUGH THE
SUBTROPICAL JET TO OUR SOUTH MAY HELP TO STRENGTHEN THE
THUNDERSTORMS THAT DEVELOP TO SEVERE LEVELS. THE STRONGEST STORMS
WILL HAVE THE ABILITY TO ROTATE BUT CLOUD BASES WILL BE HIGH ENOUGH
TO LIMIT THE SEVERE THREAT TO LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...

SEVERE THUNDERSTORMS WILL BE POSSIBLE TUESDAY AFTERNOON AND EVENING
ACROSS THE EASTERN SOUTH PLAINS INTO THE ROLLING PLAINS...AS DAYTIME
HEATING AND LOW LEVEL MOISTURE INTERACT WITH MODERATE INSTABILITY
ALONG THE DRYLINE...WHICH IS EXPECTED TO ADVANCE EASTWARD INTO THE
ROLLING PLAINS AND SOUTHEASTERN PANHANDLE BY LATE EVENING.

THE DRYLINE WILL ADVANCE FARTHER EAST ON WEDNESDAY...WITH THE THREAT
OF STRONG TO SEVERE THUNDERSTORMS MAINLY LIMITED TO AREAS EAST OF
THE CAPROCK FROM THE SOUTHEASTERN PANHANDLE INTO THE ROLLING PLAINS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED AFTER 4 PM THIS AFTERNOON INTO
THE EVENING.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 7:39 PM CDTSevere Thunderstorm WarningLUBParmer66 min
Apr 18, 4:15 PM CDTSevere Thunderstorm WarningLUBParmer45 min
Apr 18, 4:37 PM CDTSevere Thunderstorm WarningLUBCastro68 min
Apr 18, 6:13 PM CDTSevere Thunderstorm WarningLUBHale47 min
Apr 18, 6:16 PM CDTSevere Thunderstorm WarningLUBSwisher59 min
Apr 18, 6:25 PM CDTSevere Thunderstorm WarningLUBBriscoe65 min

Nearby

Severe Thunderstorm Warnings in Texas, 2005Every severe thunderstorm warning in 2005

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.