Alert archive / Texas / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 293, NWS Lubbock, TX

August 27, 2005Cochran County, Hockley County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Aug 27, 2005, 8:39 PM CDT for Cochran County, Hockley County, Texas. It was in force for 66 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: Aug 27, 2005, 8:39 PM CDT (01:39 UTC)
Expired: Aug 27, 2005, 9:45 PM CDT
In force: 66 min
Issued by: NWS Lubbock, TX
Area: Counties, with a storm outline in the text

Counties Cochran County, TX, Hockley County, TX

The radar

The Lubbock radar (KLBB), 72 km from the middle of the area, began a volume at 01:40 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 nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 1.7 hours before the alert went out and 188 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1074 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 2282 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 Aug 27, 3:30 PM CDT, 5 hours 9 minutes earlier.

Area forecast discussion, Aug 27, 3:30 PM CDT, 5 hours 9 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LUBBOCK TX
330 PM CDT SAT AUG 27 2005

.SHORT TERM...
WEAK SURFACE BOUNDARY EXISTS THIS AFTERNOON OVER THE NORTHERN
SECTIONS OF COCHRAN-HOCKLEY-LUBBOCK-CROSBY COUNTIES WITH AN OUTFLOW
SITUATED ACROSS THE NORTH OVER CASTRO-SWISHER COUNTIES...AS EVIDENT
IN THE ENHANCED CU FIELD ON VISIBLE IMAGERY AND ISOLATED CONVECTION
ON 88D REF DATA.  SPC MESOSCALE GRID DATA OVER THE REGION DEPICTS
THE TRANSLATION OF CONVECTION BEST PHASED WITH THE 700-500 MB
AVERAGE FLOW OFF TO THE SOUTHEAST BETWEEN 15-20 KNOTS.  MID-LEVEL
DRYING DEPICTED ON WATER VAPOR FROM WSW OF ROSWELL TO ENE OF LUB-AMA
AND CONVECTION IS EXPECTED TO CONTINUE DEVELOPING IN THIS AREA OF
MARGINAL CONVECTIVE INSTABILITY.  CONVECTIVE POTENTIAL WILL BECOME
MORE WIDESPREAD TONIGHT AND INTO SUNDAY AS A POTENT SHORTWAVE TROF
SEEN OVER UT/CO THIS AFTERNOON PROPAGATES EAST/SOUTHEAST TOWARD THE
TEXAS PANHANDLE.

KINEMATICS ARE FAVORABLE FOR ANOTHER MCS DEVELOPMENT OVERNIGHT AND
INTO SUNDAY.  GFS AND NAM BOTH IDENTIFY WELL WITH THIS
FEATURE...HOWEVER THE GFS TRACKS THE BRUNT OF THE WAVE ENERGY TO OUR
NORTH/NORTHEAST BEFORE STALLING/REDEVELOPING AND PULLING IT
SOUTHWARD OVER THE FORECAST AREA SUNDAY NIGHT.  THE NAM FORECASTS
THE FEATURE TO PUSH MORE SOUTH OVER THE AREA WITH A WESTWARD SHIFT
LATE SUNDAY.  THE GFS HAD AN MCS SIGNAL IN THE 12Z OUTPUT YESTERDAY
WHICH FORECAST CONVECTION TO BE NORTH/NORTHEAST OF THE AREA...WHILE
VERIFICATION HAD THE CONVECTION MORE SOUTH OVER THE SOUTH PLAINS
EARLY TODAY.  THEREFORE...BASED ON WATER VAPOR TRENDS AND MODEL
CONTINUITY...WILL ADJUST THE NAM SOLUTION AND MAINTAIN/FORECAST A
WIDESPREAD EVOLUTION OF CONVECTION FROM THE NNW OVERSPREADING THE
AREA TONIGHT THROUGH SUNDAY.  12Z AND FORECAST SOUNDING PROFILES
CONTINUE TO SUPPORT MICROBURST POTENTIAL WITH THE ANTICIPATED MCS.
CELL MOVEMENT SHOULD INHIBIT SIGNIFICANT FLASH FLOOD ISSUES...HOWEVER
BRIEF AND LOCALIZED URBAN FLOODING AND STREAM OVERFLOW WILL BE A
CONCERN...ESPECIALLY OVER AREAS IMPACTED FROM HEAVY RAINS OVER THE
PAST WEEK.  BML.10

.LONG TERM...
UPPER RIDGE AMPLIFYING OVER SOUTHWEST DESERTS WILL ALLOW A BIT OF A
TROUGH TO CARVE OUT OVER SOUTHERN HIGH PLAINS BY SUNDAY NIGHT IN
NORTH-NORTHWEST FLOW. NAM VERSION IS A BIT WEAKER AND PREFERRED GIVEN
SUSPICIONS OF GFS CONVECTIVE FEEDBACK ISSUES. HAVE THUS TRENDED
TOWARDS SLIGHTLY HIGHER MENTION OF THUNDERSTORMS SUNDAY NIGHT...
LASTING INTO MONDAY MORNING BEFORE DECREASING. RIDGE LINE SHOULD
THEN SLOWLY APPROACH AND THEN EXPAND MID WEEK AND BEYOND.
QUESTIONABLE HOW STRONG NEXT FRONT WILL BE GIVEN MASSIVE RIDGE...BUT
LATEST RUNS SEEM INSISTENT ON BOUNDARY AT LEAST MAKING IT IN BRIEFLY
AROUND WEDNESDAY/THURSDAY. MINOR CHANGES TO MOST OF EXTENDED
PACKAGE.  MCQUEEN

&&

.PRELIMINARY POINT TEMPS/POPS...
FRIONA        64  84  59  88 /  80  50  50  40
TULIA         64  85  60  83 /  80  50  50  40
PLAINVIEW     64  84  61  83 /  80  50  50  40
LEVELLAND     66  86  62  86 /  70  50  50  40
LUBBOCK       66  85  62  86 /  70  50  50  40
BROWNFIELD    67  88  62  87 /  70  50  50  40
CHILDRESS     68  88  64  88 /  70  50  50  40
SPUR          69  88  65  87 /  60  50  50  40
ASPERMONT     70  90  65  86 /  60  50  50  40

&&

.LUB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

10/05

In the hours before

Local storm report, Aug 27, 7:40 PM CDT, 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
740 PM CDT SAT AUG 27 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0737 PM     HAIL             10 SW LUBBOCK           33.47N 102.00W
08/27/2005  1.00 INCH        LUBBOCK            TX   NWS EMPLOYEE

&&

KWIDELSK

Local storm report, Aug 27, 7:54 PM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
754 PM CDT SAT AUG 27 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0740 PM     HAIL             LARIAT                  34.33N 102.91W
08/27/2005  2.00 INCH        PARMER             TX   LAW ENFORCEMENT

&&

KWIDELSK

Local storm report, Aug 27, 8:03 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
803 PM CDT SAT AUG 27 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 PM     HAIL             6 W MULESHOE            34.23N 102.83W
08/27/2005  4.25 INCH        BAILEY             TX   LAW ENFORCEMENT

&&

KWIDELSK

Local storm report, Aug 27, 8:08 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
808 PM CDT SAT AUG 27 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0705 PM     HAIL             WILSON                  33.32N 101.73W
08/27/2005  1.00 INCH        LYNN               TX   LAW ENFORCEMENT

            HAIL COVERING THE ROADWAY.

&&

KWIDELSK

Local storm report, Aug 27, 8:13 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
813 PM CDT SAT AUG 27 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0750 AM     TSTM WND DMG     8 W POST                33.19N 101.52W
08/27/2005                   GARZA              TX   LAW ENFORCEMENT

            1 MILE STRETCH OF POWERLINES DOWN ALONG US HIGHWAY 380
            JUST INSIDE THE GARZA COUNTY LINE. REPORTED BY THE LYNN
            COUNTY SHERIFFS OFFICE.

&&

KWIDELSK

Local storm report, Aug 27, 8:17 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
817 PM CDT SAT AUG 27 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0735 AM     TSTM WND GST     5 SW GRAHAM             33.10N 101.53W
08/27/2005  69 MPH           GARZA              TX   MESONET

&&

KWIDELSK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 7:10 PM CDT	Severe Thunderstorm Warning	LUB	Garza, Lynn	50 min
Aug 27, 7:15 PM CDT	Severe Thunderstorm Warning	LUB	Parmer	30 min
Aug 27, 7:31 PM CDT	Severe Thunderstorm Warning	LUB	Lubbock	29 min
Aug 27, 7:43 PM CDT	Severe Thunderstorm Warning	LUB	Garza	32 min
Aug 27, 7:46 PM CDT	Flash Flood Warning	LUB	Parmer	119 min
Aug 27, 7:50 PM CDT	Severe Thunderstorm Warning	LUB	Bailey	40 min
Aug 27, 8:03 PM CDT	Severe Thunderstorm Warning	LUB	Lynn	57 min
Aug 27, 8:27 PM CDT	Severe Thunderstorm Warning	LUB	Bailey	33 min
Aug 27, 8:49 PM CDT	Severe Thunderstorm Warning	LUB	Lamb	26 min
Aug 27, 8:50 PM CDT	Flash Flood Warning	LUB	Bailey, Lamb	3 hr
Aug 27, 9:11 PM CDT	Tornado Warning	LUB	Hockley	49 min
Aug 27, 9:18 PM CDT	Severe Thunderstorm Warning	LUB	Bailey	42 min
Aug 27, 9:55 PM CDT	Flash Flood Warning	LUB	Parmer	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2005 Every 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.