Alert archive / Arkansas / Severe Thunderstorm Watches in 2007

Severe Thunderstorm Watch 368

June 8, 200744 counties in Arkansas; 14 counties in Mississippi; 38 counties in Tennessee

The Storm Prediction Center issued this severe thunderstorm watch at Jun 8, 2007, 9:03 AM CDT for 44 counties in Arkansas; 14 counties in Mississippi; 38 counties in Tennessee. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 8, 2007, 9:03 AM CDT (14:03 UTC)
Expired: Jun 8, 2007, 4:00 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 96 counties

Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Jackson County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Little River County, AR, Lonoke County, AR, Mississippi 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, Prairie County, AR, Pulaski County, AR, Saline County, AR, Sevier County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Alcorn County, MS, Benton County, MS, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Prentiss County, MS, Quitman County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Giles County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lauderdale County, TN, Lawrence County, TN, Lewis County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Obion County, TN, Perry County, TN, Robertson County, TN, Shelby County, TN, Stewart County, TN, Sumner County, TN, Tipton County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN

The radar

The Memphis radar (KNQA), 14 km from the middle of the area, began a volume at 14:06 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: 30%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 20%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 8, 10:13 AM CDT	Severe Thunderstorm Warning	OHX	Stewart	47 min
Jun 8, 10:51 AM CDT	Severe Thunderstorm Warning	OHX	Montgomery	39 min
Jun 8, 11:37 AM CDT	Severe Thunderstorm Warning	OHX	Benton	38 min
Jun 8, 11:46 AM CDT	Severe Thunderstorm Warning	OHX	Robertson	59 min
Jun 8, 12:30 PM CDT	Severe Thunderstorm Warning	OHX	Davidson	30 min
Jun 8, 12:40 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Williamson	65 min
Jun 8, 12:55 PM CDT	Severe Thunderstorm Warning	OHX	Sumner, Wilson	65 min
Jun 8, 12:59 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Perry	46 min
Jun 8, 1:11 PM CDT	Severe Thunderstorm Warning	OHX	Lewis	49 min
Jun 8, 1:31 PM CDT	Severe Thunderstorm Warning	OHX	Maury	44 min
Jun 8, 2:35 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence	25 min
Jun 8, 3:12 PM CDT	Severe Thunderstorm Warning	LZK	Monroe	33 min
Jun 8, 3:42 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Monroe	48 min
Jun 8, 3:51 PM CDT	Flash Flood Warning	LZK	Monroe	114 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

Little Rock, AR (KLZK), launched 12:00Z, 2.1 hours before the alert went out and 68 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: 2031 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 724 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 2:50 PM CDT	Mesoscale Discussion	SPC	Blount, Calhoun, Cherokee, Cullman, DeKalb, Etowah and 14 more	85 min
Jun 7, 11:12 PM CDT	Mesoscale Discussion	SPC	Benton, Carroll, Washington	93 min
Jun 7, 11:43 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more	7 hr
Jun 8, 6:23 AM CDT	Mesoscale Discussion	SPC	Baxter, Clay, Cleburne, Franklin, Fulton, Greene and 11 more	67 min
Jun 8, 8:32 AM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Clark, Cleburne and 42 more	58 min
Jun 8, 2:12 PM CDT	Mesoscale Discussion	SPC	Union	3 hr
Jun 8, 3:25 PM CDT	Mesoscale Discussion	SPC	Arkansas, Bradley, Calhoun, Clark, Cleveland, Dallas and 11 more	95 min
Jun 8, 8:30 AM CDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Boone, Bourbon and 77 more	90 min
Jun 8, 8:45 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Ballard, Barren, Boone, Bracken and 59 more	6 hr
Jun 8, 11:02 AM CDT	Mesoscale Discussion	SPC	Adair, Bath, Bell, Bourbon, Boyd, Breathitt and 44 more	58 min
Jun 8, 11:37 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Bath, Bell, Bourbon, Boyd, Boyle and 49 more	8 hr
Jun 8, 11:40 AM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Barren, Boone, Bracken, Breckinridge and 36 more	65 min
Jun 8, 2:06 PM CDT	Mesoscale Discussion	SPC	Adair, Bath, Bell, Bourbon, Boyd, Boyle and 49 more	54 min
Jun 7, 7:08 PM CDT	Mesoscale Discussion	SPC	Archer, Clay, Cooke, Denton, Jack, Montague and 2 more	2 hr
Jun 8, 5:24 PM CDT	Mesoscale Discussion	SPC	Brewster, Jeff Davis, Presidio	2 hr
Jun 8, 6:36 PM CDT	Mesoscale Discussion	SPC	Anderson, Bell, Burnet, Cherokee, Coryell, Falls and 19 more	114 min

Nearby

Severe Thunderstorm Watches in Arkansas, 2007 Severe Thunderstorm Watches in Tennessee, 2007 Severe Thunderstorm Watches in Mississippi, 2007 Every severe thunderstorm watch in 2007

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.