Alert archive / Texas / Tornado Watches in 2010

Tornado Watch 435

July 1, 201023 counties in Texas

The Storm Prediction Center issued this tornado watch at Jul 1, 2010, 7:17 AM CDT for 23 counties in Texas. It was in force for 13 hr.

The area

The outline as issued.

The facts

Issued
Jul 1, 2010, 7:17 AM CDT (12:17 UTC)
Expired
Jul 1, 2010, 8:00 PM CDT
In force
13 hr
Issued by
the Storm Prediction Center
Largest hail expected
0.5 in
Strongest gust expected
60 kt
All 23 counties

Aransas County, TX, Bee County, TX, Brooks County, TX, Calhoun County, TX, Cameron County, TX, Duval County, TX, Goliad County, TX, Hidalgo County, TX, Jim Hogg County, TX, Jim Wells County, TX, Kenedy County, TX, Kleberg County, TX, La Salle County, TX, Live Oak County, TX, McMullen County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Starr County, TX, Victoria County, TX, Webb County, TX, Willacy County, TX, Zapata County, TX

The radar

The Corpus Christi radar (KCRP), 71 km from the middle of the area, began a volume at 12:19 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
10%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
5%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
50%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 1, 8:03 AM CDTFlash Flood WarningCRPJim Wells, Nueces117 min
Jul 1, 9:29 AM CDTFlash Flood WarningCRPLive Oak2 hr
Jul 1, 10:01 AM CDTTornado WarningCRPAransas, San Patricio29 min
Jul 1, 2:43 PM CDTTornado WarningBROBrooks17 min
Jul 1, 3:04 PM CDTTornado WarningCRPDuval41 min
Jul 1, 3:18 PM CDTTornado WarningBROBrooks, Jim Hogg27 min
Jul 1, 3:43 PM CDTTornado WarningCRPDuval47 min
Jul 1, 3:44 PM CDTFlash Flood WarningBROBrooks, Jim Hogg91 min
Jul 1, 3:58 PM CDTFlash Flood WarningCRPDuval, Jim Wells, Kleberg3 hr
Jul 1, 4:29 PM CDTFlash Flood WarningBROBrooks91 min
Jul 1, 5:54 PM CDTTornado WarningCRPJim Wells, Kleberg36 min
Jul 1, 6:11 PM CDTFlash Flood WarningCRPDuval, Jim Wells, Kleberg, Nueces, San Patricio2 hr
Jul 1, 6:27 PM CDTTornado WarningCRPDuval, Jim Wells33 min
Jul 1, 6:57 PM CDTFlash Flood WarningCRPAransas, Calhoun, Refugio, San Patricio3 hr

Discussions around it

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

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 0.3 hours before the alert went out and 87 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, Corpus Christi, TX at 12:00Z on 2010-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3628 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, Corpus Christi, TX at 12:00Z on 2010-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
3628 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
483 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 30, 8:07 PM CDTTornado WatchSPCBrooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 2 more8 hr
Jun 30, 11:51 PM CDTMesoscale DiscussionSPCBrooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 2 more84 min
Jul 1, 2:58 AM CDTMesoscale DiscussionSPCBee, Brooks, Duval, Hidalgo, Jim Hogg, Jim Wells and 10 more62 min
Jul 1, 7:09 AM CDTMesoscale DiscussionSPCBrooks, Duval, Hidalgo, Jim Hogg, Jim Wells, Kenedy and 10 more66 min
Jul 1, 2:00 PM CDTMesoscale DiscussionSPCAransas, Bee, Brooks, Calhoun, Cameron, Duval and 17 more90 min

Nearby

Tornado Watches in Texas, 2010Every tornado watch in 2010

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.