Alert archive / Arkansas / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 90

April 24, 20146 states

The Storm Prediction Center issued this severe thunderstorm watch at Apr 24, 2014, 2:38 PM CDT for 6 states. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Apr 24, 2014, 2:38 PM CDT (19:38 UTC)
Expired: Apr 25, 2014, 12:00 AM CDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2.5 in
Strongest gust expected: 65 kt

All 121 counties

Arkansas County, AR, Ashley County, AR, Baxter County, AR, Boone County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Cleveland County, AR, Columbia 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, Fulton 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, Lincoln County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Marion County, AR, Miller County, AR, Mississippi County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Newton 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, Searcy County, AR, Sevier County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Union County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, East Carroll Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Ouachita Parish, LA, Richland Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Dunklin County, MO, Pemiscot County, MO, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Kemper County, MS, Leake County, MS, Leflore County, MS, Lowndes County, MS, Montgomery County, MS, Neshoba County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Quitman County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tunica County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS, Dyer County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Bowie County, TX, Red River County, TX

The radar

The Little Rock radar (KLZK), 29 km from the middle of the area, began a volume at 19:41 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: 20%
Ten or more severe wind reports: 70%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 95%
One or more hailstones of 2 inches or more: 50%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 24, 2:41 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Union	49 min
Apr 24, 2:59 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Claiborne, Jackson, Lincoln	46 min
Apr 24, 3:26 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland, Drew, Ouachita	49 min
Apr 24, 3:29 PM CDT	Severe Thunderstorm Warning	SHV	Union	46 min
Apr 24, 3:43 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Scott, Yell	47 min
Apr 24, 3:46 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson, White, Woodruff	44 min
Apr 24, 4:03 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott	42 min
Apr 24, 4:11 PM CDT	Severe Thunderstorm Warning	LZK	Desha, Drew	34 min
Apr 24, 4:14 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Drew	31 min
Apr 24, 4:14 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Poinsett	46 min
Apr 24, 4:17 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Lonoke, Monroe, Prairie	28 min
Apr 24, 4:20 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	55 min
Apr 24, 4:22 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Desha, Drew	23 min
Apr 24, 4:26 PM CDT	Severe Thunderstorm Warning	JAN	Chicot	34 min
Apr 24, 4:26 PM CDT	Severe Thunderstorm Warning	MEG	Phillips	49 min
Apr 24, 4:27 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Newton, Pope	33 min
Apr 24, 4:29 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott, Yell	31 min
Apr 24, 4:39 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott, Yell	36 min
Apr 24, 4:42 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Monroe, Prairie	33 min
Apr 24, 4:44 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Drew	31 min
Apr 24, 4:56 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery, Perry, Scott, Yell	34 min
Apr 24, 5:11 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery, Pike, Polk	34 min
Apr 24, 5:14 PM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Lee, Phillips, St. Francis	46 min
Apr 24, 5:21 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Perry, Saline, Yell	39 min
Apr 24, 5:29 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Garland, Hot Spring, Montgomery, Pike	46 min
Apr 24, 5:31 PM CDT	Severe Thunderstorm Warning	JAN	Ashley, Chicot	44 min
Apr 24, 6:02 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Grant, Hot Spring, Pulaski, Saline	28 min
Apr 24, 6:15 PM CDT	Severe Thunderstorm Warning	JAN	Chicot	45 min
Apr 24, 6:26 PM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Grant, Hot Spring, Jefferson, Pulaski and 1 more	49 min
Apr 24, 6:37 PM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Sunflower	53 min
Apr 24, 6:58 PM CDT	Tornado Warning	JAN	Humphreys, Sunflower, Washington	62 min
Apr 24, 7:13 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Montgomery	62 min
Apr 24, 7:16 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Cleveland, Dallas, Grant, Jefferson, Lincoln	44 min
Apr 24, 7:26 PM CDT	Tornado Warning	JAN	Holmes, Leflore	49 min
Apr 24, 7:57 PM CDT	Tornado Warning	JAN	Attala, Holmes	63 min
Apr 24, 8:01 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Bradley, Cleveland, Desha, Drew, Jefferson and 1 more	44 min
Apr 24, 8:44 PM CDT	Severe Thunderstorm Warning	LZK	Desha, Drew	31 min
Apr 24, 8:44 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	46 min
Apr 24, 8:56 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Winston	49 min
Apr 24, 9:42 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee, Winston	48 min
Apr 24, 10:44 PM CDT	Severe Thunderstorm Warning	JAN	Winston	46 min
Apr 24, 11:03 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee	42 min
Apr 24, 11:11 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Winston	34 min
Apr 24, 11:23 PM CDT	Severe Thunderstorm Warning	JAN	Kemper	52 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 (KBYH), launched 12:00Z, 7.6 hours before the alert went out and 183 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: 2337 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 182 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
Apr 24, 1:13 PM CDT	Mesoscale Discussion	SPC	Carroll, Clark, Conway, Crawford, Franklin, Garland and 19 more	2 hr
Apr 24, 1:58 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 12 more	2 hr
Apr 24, 2:21 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more	6 hr
Apr 24, 3:47 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Baxter, Benton, Boone, Bradley and 69 more	88 min
Apr 24, 5:50 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 61 more	85 min
Apr 24, 12:42 PM CDT	Mesoscale Discussion	SPC	Barry, Barton, Bates, Benton, Camden, Cedar and 31 more	93 min
Apr 24, 6:12 PM CDT	Mesoscale Discussion	SPC	City of Saint Louis	93 min
Apr 23, 9:21 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Clay, Eastland, Fisher and 14 more	54 min

Nearby

Severe Thunderstorm Watches in Arkansas, 2014 Severe Thunderstorm Watches in Mississippi, 2014 Severe Thunderstorm Watches in Louisiana, 2014 Every severe thunderstorm watch in 2014

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.