Alert archive / Texas / Tornado Watches in 2009

Tornado Watch 390

June 12, 20094 counties in Oklahoma; 45 counties in Texas

The Storm Prediction Center issued this tornado watch at Jun 12, 2009, 3:29 PM CDT for 4 counties in Oklahoma; 45 counties in Texas. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jun 12, 2009, 3:29 PM CDT (20:29 UTC)
Expired: Jun 13, 2009, 12:00 AM CDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 4 in
Strongest gust expected: 60 kt

All 49 counties

Carter County, OK, Cotton County, OK, Jefferson County, OK, Love County, OK, Archer County, TX, Bell County, TX, Bosque County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coleman County, TX, Collin County, TX, Comanche County, TX, Concho County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Falls County, TX, Grayson County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Kimble County, TX, Lampasas County, TX, Limestone County, TX, Mason County, TX, McCulloch County, TX, McLennan County, TX, Menard County, TX, Milam County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Robertson County, TX, San Saba County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Wichita County, TX, Wise County, TX, Young County, TX

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: 30%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 70%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 12, 4:38 PM CDT	Severe Thunderstorm Warning	SJT	Brown	52 min
Jun 12, 4:48 PM CDT	Severe Thunderstorm Warning	FWD	Jack	57 min
Jun 12, 5:18 PM CDT	Tornado Warning	FWD	Jack	42 min
Jun 12, 5:25 PM CDT	Severe Thunderstorm Warning	FWD	Mills	65 min
Jun 12, 5:29 PM CDT	Severe Thunderstorm Warning	SJT	Brown	46 min
Jun 12, 5:34 PM CDT	Severe Thunderstorm Warning	SJT	Brown	26 min
Jun 12, 5:40 PM CDT	Severe Thunderstorm Warning	FWD	Comanche	65 min
Jun 12, 5:42 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Montague, Wise	63 min
Jun 12, 5:48 PM CDT	Severe Thunderstorm Warning	OUN	Clay	33 min
Jun 12, 5:52 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	53 min
Jun 12, 5:53 PM CDT	Tornado Warning	FWD	Jack, Palo Pinto, Parker	52 min
Jun 12, 6:00 PM CDT	Tornado Warning	SJT	San Saba	30 min
Jun 12, 6:07 PM CDT	Severe Thunderstorm Warning	FWD	Montague	68 min
Jun 12, 6:27 PM CDT	Tornado Warning	SJT	San Saba	48 min
Jun 12, 6:40 PM CDT	Severe Thunderstorm Warning	FWD	Jack	65 min
Jun 12, 6:43 PM CDT	Tornado Warning	FWD	Palo Pinto, Parker	62 min
Jun 12, 6:43 PM CDT	Severe Thunderstorm Warning	SJT	Brown	32 min
Jun 12, 6:47 PM CDT	Severe Thunderstorm Warning	OUN	Love	38 min
Jun 12, 6:47 PM CDT	Severe Thunderstorm Warning	FWD	Mills	45 min
Jun 12, 6:50 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch	25 min
Jun 12, 7:09 PM CDT	Tornado Warning	SJT	San Saba	51 min
Jun 12, 7:13 PM CDT	Tornado Warning	FWD	Parker	37 min
Jun 12, 7:15 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	45 min
Jun 12, 7:22 PM CDT	Severe Thunderstorm Warning	OUN	Clay	27 min
Jun 12, 7:24 PM CDT	Severe Thunderstorm Warning	FWD	Hood	66 min
Jun 12, 7:34 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch	26 min
Jun 12, 7:43 PM CDT	Severe Thunderstorm Warning	FWD	Parker	62 min
Jun 12, 7:49 PM CDT	Severe Thunderstorm Warning	FWD	Johnson, Somervell	71 min
Jun 12, 7:50 PM CDT	Tornado Warning	SJT	Mason, San Saba	40 min
Jun 12, 7:57 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Love	48 min
Jun 12, 8:01 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, San Saba	44 min
Jun 12, 8:21 PM CDT	Tornado Warning	SJT	Mason	39 min
Jun 12, 8:26 PM CDT	Severe Thunderstorm Warning	FWD	Hood	29 min
Jun 12, 8:42 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	35 min
Jun 12, 8:56 PM CDT	Severe Thunderstorm Warning	FWD	Hill, Johnson	64 min
Jun 12, 8:56 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, San Saba	64 min
Jun 12, 9:12 PM CDT	Severe Thunderstorm Warning	FWD	Bosque	44 min
Jun 12, 9:27 PM CDT	Severe Thunderstorm Warning	FWD	Hill	51 min
Jun 12, 9:56 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, San Saba	64 min
Jun 12, 10:18 PM CDT	Flash Flood Warning	SJT	Mason	3 hr
Jun 12, 10:28 PM CDT	Tornado Warning	SJT	Mason	32 min
Jun 12, 10:34 PM CDT	Flash Flood Warning	SJT	McCulloch, San Saba	3 hr
Jun 12, 10:54 PM CDT	Tornado Warning	SJT	Mason	36 min
Jun 12, 11:00 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, San Saba	60 min
Jun 12, 11:23 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Menard	52 min
Jun 12, 11:51 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, Menard	54 min
Jun 12, 11:57 PM CDT	Tornado Warning	SJT	McCulloch, Mason	48 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

Fort Worth, TX (KFWD), launched 12:00Z, 8.5 hours before the alert went out and 142 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: 2338 J/kg
Mixed-layer CIN: -263 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 272 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 12, 1:01 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Garfield, Grant, Harper, Kay, Major and 4 more	89 min
Jun 12, 2:04 AM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Garfield, Grant, Harper, Kay, Noble and 4 more	6 hr
Jun 12, 6:23 AM CDT	Mesoscale Discussion	SPC	Adair, Alfalfa, Cherokee, Craig, Creek, Delaware and 24 more	67 min
Jun 12, 7:46 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Cherokee, Craig, Creek, Delaware, Garfield and 27 more	7 hr
Jun 12, 10:03 AM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Delaware, Haskell, LeFlore, Muskogee and 1 more	87 min
Jun 12, 11:01 AM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 19 more	89 min
Jun 12, 11:35 AM CDT	Severe Thunderstorm Watch PDS	SPC	Adair, Cherokee, Haskell, Latimer, LeFlore, McIntosh and 3 more	9 hr
Jun 12, 1:30 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Haskell, LeFlore, Sequoyah	90 min
Jun 12, 2:16 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Coal, Comanche, Cotton and 15 more	89 min
Jun 12, 6:50 PM CDT	Mesoscale Discussion	SPC	Atoka, Blaine, Bryan, Caddo, Canadian, Carter and 27 more	55 min
Jun 11, 7:42 PM CDT	Mesoscale Discussion	SPC	Bell, Blanco, Brown, Burnet, Callahan, Coleman and 28 more	63 min
Jun 11, 9:53 PM CDT	Mesoscale Discussion	SPC	Bastrop, Bell, Blanco, Burleson, Burnet, Caldwell and 12 more	67 min
Jun 11, 10:16 PM CDT	Severe Thunderstorm Watch	SPC	Bastrop, Bell, Blanco, Brown, Burnet, Caldwell and 20 more	3 hr
Jun 12, 6:10 PM CDT	Mesoscale Discussion	SPC	Bosque, Brown, Burnet, Clay, Comanche, Cooke and 21 more	65 min

Nearby

Tornado Watches in Texas, 2009 Tornado Watches in Oklahoma, 2009 Every tornado 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.