Alert archive / Arkansas / Tornado Watches in 2008

Tornado Watch 130

March 18, 200854 counties in Arkansas; 4 counties in Oklahoma; 23 counties in Texas

The Storm Prediction Center issued this tornado watch at Mar 18, 2008, 10:16 AM CDT for 54 counties in Arkansas; 4 counties in Oklahoma; 23 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Mar 18, 2008, 10:16 AM CDT (15:16 UTC)
Expired: Mar 18, 2008, 5:23 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Particularly dangerous situation: Yes
Largest hail expected: 2 in
Strongest gust expected: 70 kt

All 81 counties

Arkansas County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Dallas County, AR, Faulkner County, AR, Franklin County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lafayette County, AR, Lawrence County, AR, Lee County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Miller County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Poinsett County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Choctaw County, OK, LeFlore County, OK, McCurtain County, OK, Pushmataha County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Delta County, TX, Fannin County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Rains County, TX, Red River County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Little Rock radar (KLZK), 39 km from the middle of the area, began a volume at 15:16 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: 80%
One or more EF2 to EF5 tornadoes: 60%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 40%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 20%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Mar 18, 11:17 AM CDT	Severe Thunderstorm Warning	TSA	Franklin	58 min
Mar 18, 11:25 AM CDT	Flash Flood Warning	LZK	Izard, Stone	6 hr
Mar 18, 11:44 AM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan	46 min
Mar 18, 11:46 AM CDT	Severe Thunderstorm Warning	TSA	Franklin	59 min
Mar 18, 11:53 AM CDT	Flash Flood Warning	LZK	Fulton, Sharp	6 hr
Mar 18, 11:55 AM CDT	Tornado Warning	TSA	Franklin	40 min
Mar 18, 12:12 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Pope	48 min
Mar 18, 1:05 PM CDT	Severe Thunderstorm Warning	LZK	Pope, Van Buren	40 min
Mar 18, 1:18 PM CDT	Flash Flood Warning	TSA	Choctaw, Pushmataha	6 hr
Mar 18, 1:23 PM CDT	Tornado Warning	LZK	Pope, Searcy, Van Buren	39 min
Mar 18, 1:40 PM CDT	Flash Flood Warning	LZK	Polk	6 hr
Mar 18, 1:55 PM CDT	Flash Flood Warning	LZK	Johnson, Logan, Pope, Scott, Van Buren, Yell	6 hr
Mar 18, 2:14 PM CDT	Flash Flood Warning	TSA	Carroll, Crawford, Franklin, Madison, Sebastian	6 hr
Mar 18, 2:36 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Pope, Yell	39 min
Mar 18, 3:01 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Henderson	44 min
Mar 18, 3:27 PM CDT	Severe Thunderstorm Warning	FWD	Van Zandt	28 min
Mar 18, 3:40 PM CDT	Flash Flood Warning	SHV	McCurtain	4 hr
Mar 18, 3:47 PM CDT	Flash Flood Warning	LZK	Cleburne, Conway, Faulkner, Independence, Montgomery, Perry and 3 more	6 hr
Mar 18, 4:08 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Perry	52 min
Mar 18, 4:21 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Craighead, Greene, Lawrence, Randolph	39 min
Mar 18, 4:27 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson	48 min
Mar 18, 4:31 PM CDT	Flash Flood Warning	LZK	Baxter, Boone, Fulton, Izard, Marion, Newton and 3 more	6 hr
Mar 18, 4:33 PM CDT	Flash Flood Warning	FWD	Fannin, Hunt	3 hr
Mar 18, 4:42 PM CDT	Tornado Warning	MEG	Clay, Craighead, Greene	48 min
Mar 18, 4:48 PM CDT	Flash Flood Warning	SHV	McCurtain	4 hr
Mar 18, 4:53 PM CDT	Severe Thunderstorm Warning	MEG	Clay	52 min
Mar 18, 5:00 PM CDT	Flash Flood Warning	FWD	Delta, Hopkins, Lamar	3 hr
Mar 18, 5:11 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson, White	48 min
Mar 18, 5:11 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Lawrence, Mississippi, Poinsett	49 min
Mar 18, 5:12 PM CDT	Flash Flood Warning	FWD	Collin, Kaufman, Rockwall	3 hr
Mar 18, 5:15 PM CDT	Flash Flood Warning	MEG	Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more	15 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

Springfield, MO (KSGF), launched 12:00Z, 3.3 hours before the alert went out and 245 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 529 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: -191 m²/s²
0-3 km storm-relative helicity: -22 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.

Issued	Product	Office	Counties	Lasted
Mar 17, 7:34 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Crawford, Franklin and 11 more	56 min
Mar 17, 9:36 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 20 more	114 min
Mar 17, 10:16 PM CDT	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 31 more	8 hr
Mar 18, 1:13 AM CDT	Mesoscale Discussion	SPC	Washington	62 min
Mar 18, 2:23 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Fulton, Madison and 2 more	2 hr
Mar 18, 2:46 AM CDT	Mesoscale Discussion	SPC	Baxter, Cleburne, Conway, Crawford, Faulkner, Franklin and 27 more	89 min
Mar 18, 5:54 AM CDT	Mesoscale Discussion	SPC	Benton, Boone, Carroll, Crawford, Madison, Washington	2 hr
Mar 18, 9:26 AM CDT	Mesoscale Discussion	SPC	Calhoun, Clark, Columbia, Conway, Dallas, Garland and 19 more	2 hr
Mar 18, 10:59 AM CDT	Tornado Watch PDS	SPC	Union	8 hr
Mar 18, 11:54 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Crawford, Franklin and 6 more	3 hr
Mar 18, 12:10 PM CDT	Mesoscale Discussion	SPC	Arkansas, Clark, Cleburne, Cleveland, Conway, Craighead and 47 more	2 hr
Mar 18, 1:51 PM CDT	Mesoscale Discussion	SPC	Polk, Sevier	3 hr
Mar 18, 3:54 PM CDT	Mesoscale Discussion	SPC	Clark, Cleburne, Columbia, Dallas, Faulkner, Garland and 21 more	2 hr
Mar 18, 4:46 PM CDT	Mesoscale Discussion	SPC	Arkansas, Clark, Clay, Craighead, Crittenden, Cross and 19 more	59 min
Mar 18, 5:19 PM CDT	Tornado Watch	SPC	Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 43 more	11 hr
Mar 18, 6:06 PM CDT	Mesoscale Discussion	SPC	Clark, Clay, Cleburne, Conway, Craighead, Cross and 20 more	3 hr
Mar 18, 6:47 PM CDT	Tornado Watch	SPC	Union	9 hr
Mar 17, 7:09 PM CDT	Severe Thunderstorm Watch	SPC	Caddo, Canadian, Carter, Cleveland, Coal, Comanche and 19 more	7 hr
Mar 17, 10:21 PM CDT	Mesoscale Discussion	SPC	Blaine, Caddo, Canadian, Carter, Cleveland, Coal and 25 more	54 min
Mar 17, 9:17 PM CDT	Mesoscale Discussion	SPC	Bandera, Blanco, Bosque, Brown, Burnet, Callahan and 53 more	58 min
Mar 17, 11:06 PM CDT	Mesoscale Discussion	SPC	Bandera, Blanco, Bosque, Brown, Burnet, Callahan and 53 more	54 min
Mar 18, 1:32 AM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coke, Coleman, Concho, Crockett and 9 more	58 min
Mar 18, 1:43 AM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coke, Coleman, Concho, Crockett and 9 more	32 min
Mar 18, 1:52 AM CDT	Tornado Watch	SPC	Bandera, Blanco, Bosque, Brown, Burnet, Callahan and 34 more	7 hr
Mar 18, 4:57 AM CDT	Mesoscale Discussion	SPC	Bandera, Blanco, Burnet, Coryell, Gillespie, Hamilton and 7 more	93 min
Mar 18, 7:22 AM CDT	Mesoscale Discussion	SPC	Anderson, Austin, Bastrop, Bell, Brazoria, Brazos and 40 more	113 min
Mar 18, 7:50 AM CDT	Mesoscale Discussion	SPC	Bandera, Bosque, Brown, Burnet, Coleman, Comanche and 19 more	55 min
Mar 18, 1:19 PM CDT	Mesoscale Discussion	SPC	Anderson, Austin, Bastrop, Bell, Brazos, Burleson and 37 more	116 min
Mar 18, 6:19 PM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Chambers, Cherokee, Hardin, Harrison and 16 more	56 min

Nearby

Tornado Watches in Arkansas, 2008 Tornado Watches in Texas, 2008 Tornado Watches in Oklahoma, 2008 Every tornado watch in 2008

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.