Alert archive / Texas / Severe Thunderstorm Watches in 2009

Severe Thunderstorm Watch 409

June 14, 200950 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 14, 2009, 2:20 PM CDT for 50 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 14, 2009, 2:20 PM CDT (19:20 UTC)
Expired
Jun 14, 2009, 9:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
70 kt
All 50 counties

Andrews County, TX, Armstrong County, TX, Bailey County, TX, Borden County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dawson County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Ector County, TX, Floyd County, TX, Gaines County, TX, Garza County, TX, Glasscock County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hemphill County, TX, Hockley County, TX, Howard County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Moore County, TX, Motley County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Scurry County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Winkler County, TX, Yoakum County, TX

The radar

The Lubbock radar (KLBB), 66 km from the middle of the area, began a volume at 19:21 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
40%
Ten or more severe hail reports
60%
One or more hailstones of 2 inches or more
40%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

28 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 14, 3:46 PM CDTSevere Thunderstorm WarningLUBBailey, Castro, Lamb, Parmer44 min
Jun 14, 4:14 PM CDTSevere Thunderstorm WarningLUBCastro, Hale, Lamb30 min
Jun 14, 4:15 PM CDTSevere Thunderstorm WarningLUBBriscoe, Floyd, Hall, Motley60 min
Jun 14, 4:42 PM CDTSevere Thunderstorm WarningAMACarson, Potter, Randall63 min
Jun 14, 4:44 PM CDTSevere Thunderstorm WarningMAFLoving, Pecos, Reeves, Ward, Winkler61 min
Jun 14, 4:57 PM CDTSevere Thunderstorm WarningLUBBriscoe, Hall48 min
Jun 14, 5:07 PM CDTSevere Thunderstorm WarningAMAArmstrong, Donley53 min
Jun 14, 5:08 PM CDTSevere Thunderstorm WarningLUBBriscoe, Floyd, Hall, Motley52 min
Jun 14, 5:12 PM CDTTornado WarningLUBMotley33 min
Jun 14, 5:20 PM CDTSevere Thunderstorm WarningMAFAndrews, Ector, Gaines, Winkler55 min
Jun 14, 5:40 PM CDTTornado WarningLUBCottle, Motley50 min
Jun 14, 5:50 PM CDTSevere Thunderstorm WarningAMADonley, Gray23 min
Jun 14, 6:00 PM CDTSevere Thunderstorm WarningLUBChildress, Hall43 min
Jun 14, 6:00 PM CDTSevere Thunderstorm WarningMAFAndrews, Gaines60 min
Jun 14, 6:09 PM CDTTornado WarningLUBCottle, Motley36 min
Jun 14, 6:10 PM CDTSevere Thunderstorm WarningLUBBriscoe, Hall50 min
Jun 14, 6:26 PM CDTSevere Thunderstorm WarningAMAHutchinson64 min
Jun 14, 6:29 PM CDTSevere Thunderstorm WarningLUBTerry, Yoakum46 min
Jun 14, 6:38 PM CDTSevere Thunderstorm WarningLUBCottle52 min
Jun 14, 6:49 PM CDTSevere Thunderstorm WarningAMADeaf Smith, Randall56 min
Jun 14, 6:58 PM CDTSevere Thunderstorm WarningAMAHansford, Hutchinson, Ochiltree47 min
Jun 14, 6:58 PM CDTSevere Thunderstorm WarningLUBCochran, Hockley, Lubbock, Lynn, Terry, Yoakum47 min
Jun 14, 6:59 PM CDTSevere Thunderstorm WarningLUBFloyd, Hale61 min
Jun 14, 7:22 PM CDTSevere Thunderstorm WarningLUBCrosby, Hale, Hockley, Lamb, Lubbock, Lynn and 1 more38 min
Jun 14, 7:35 PM CDTSevere Thunderstorm WarningLUBChildress, Hall40 min
Jun 14, 7:48 PM CDTSevere Thunderstorm WarningLUBCrosby, Floyd, Hale, Lubbock, Motley57 min
Jun 14, 7:53 PM CDTSevere Thunderstorm WarningLUBBailey, Parmer50 min
Jun 14, 8:01 PM CDTSevere Thunderstorm WarningAMADeaf Smith, Oldham59 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 7.3 hours before the alert went out and 113 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 2009-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 695 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 2009-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 228 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
695 J/kg
Mixed-layer CIN
-269 J/kg
Mixed-layer LCL
1741 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
228 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 13, 7:46 PM CDTMesoscale DiscussionSPCArcher, Armstrong, Baylor, Borden, Briscoe, Callahan and 60 more59 min
Jun 13, 8:19 PM CDTSevere Thunderstorm WatchSPCClay, Collin, Cooke, Denton, Fannin, Grayson and 5 more8 hr
Jun 14, 1:05 PM CDTMesoscale DiscussionSPCDallam, Hansford, Hartley, Sherman85 min
Jun 14, 2:04 PM CDTMesoscale DiscussionSPCAndrews, Armstrong, Bailey, Borden, Briscoe, Castro and 24 more56 min
Jun 14, 4:11 PM CDTTornado WatchSPCHansford, Lipscomb, Ochiltree, Sherman7 hr
Jun 14, 5:13 PM CDTMesoscale DiscussionSPCAndrews, Armstrong, Bailey, Borden, Briscoe, Carson and 46 more2 hr
Jun 14, 6:18 PM CDTMesoscale DiscussionSPCBaylor, Foard, Hardeman, Knox, Wichita, Wilbarger57 min
Jun 14, 6:50 PM CDTSevere Thunderstorm WatchSPCFoard, Hardeman, Wichita, Wilbarger7 hr

Nearby

Severe Thunderstorm Watches in Texas, 2009Every severe thunderstorm watch in 2009

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.