Alert archive / Arkansas / Tornado Watches in 2013

Tornado Watch 258

May 30, 201364 counties in Arkansas

The Storm Prediction Center issued this tornado watch at May 30, 2013, 8:46 PM CDT for 64 counties in Arkansas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: May 30, 2013, 8:46 PM CDT (01:46 UTC)
Expired: May 31, 2013, 4:00 AM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 64 counties

Arkansas County, AR, Baxter County, AR, Benton County, AR, Boone County, AR, Bradley County, AR, Calhoun County, AR, Carroll County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Craighead County, AR, Crawford County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Logan County, AR, Lonoke County, AR, Madison County, AR, Marion County, AR, Mississippi County, AR, Monroe County, AR, Montgomery 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, Sebastian County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Woodruff County, AR, Yell County, AR

The radar

The Little Rock radar (KLZK), 79 km from the middle of the area, began a volume at 01:47 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: 30%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 30%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
May 30, 8:55 PM CDT	Flash Flood Warning	LZK	Faulkner, Garland, Grant, Hot Spring, Pulaski, Saline	3 hr
May 30, 9:11 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Pulaski	64 min
May 30, 9:13 PM CDT	Tornado Warning	LZK	Faulkner, Lonoke, Pulaski	47 min
May 30, 9:33 PM CDT	Flash Flood Warning	LZK	Lonoke, Prairie, Pulaski, White	3 hr
May 30, 9:37 PM CDT	Tornado Warning	TSA	Benton, Washington	53 min
May 30, 9:38 PM CDT	Tornado Warning	LZK	Grant, Saline	52 min
May 30, 9:41 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Prairie, Pulaski, White	49 min
May 30, 10:15 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Pulaski, Saline	45 min
May 30, 10:19 PM CDT	Tornado Warning	TSA	Benton, Carroll, Madison, Washington	41 min
May 30, 10:21 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Monroe, Prairie, Woodruff	39 min
May 30, 10:27 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Perry, Pulaski	48 min
May 30, 10:34 PM CDT	Flash Flood Warning	LZK	Faulkner, Garland, Hot Spring, Montgomery, Perry, Pike and 5 more	4 hr
May 30, 10:41 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott	49 min
May 30, 10:50 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Logan, Pope	40 min
May 30, 10:56 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Pulaski	49 min
May 30, 10:56 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison, Washington	64 min
May 30, 11:25 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott, Yell	50 min
May 30, 11:47 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie	43 min
May 30, 11:50 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Faulkner, White	40 min
May 30, 11:51 PM CDT	Severe Thunderstorm Warning	LZK	Monroe, Prairie, Woodruff	39 min
May 30, 11:52 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Marion, Newton	53 min
May 30, 11:55 PM CDT	Severe Thunderstorm Warning	TSA	Madison, Washington	65 min
May 31, 12:08 AM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Lee, St. Francis	37 min
May 31, 12:09 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, White	36 min
May 31, 12:14 AM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott, Yell	61 min
May 31, 12:27 AM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Faulkner, Independence, White	48 min
May 31, 12:29 AM CDT	Severe Thunderstorm Warning	LZK	Monroe, Woodruff	31 min
May 31, 12:39 AM CDT	Severe Thunderstorm Warning	MEG	Lee, St. Francis	51 min
May 31, 12:49 AM CDT	Tornado Warning	MEG	Lee, St. Francis	26 min
May 31, 12:53 AM CDT	Tornado Warning	LZK	Monroe, Woodruff	37 min
May 31, 1:58 AM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott	47 min
May 31, 2:03 AM CDT	Flash Flood Warning	LZK	Hot Spring	6 hr
May 31, 2:30 AM CDT	Flash Flood Warning	LZK	Clark, Garland, Hot Spring, Logan, Montgomery, Perry and 4 more	3 hr
May 31, 2:45 AM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott	45 min
May 31, 3:17 AM CDT	Flash Flood Warning	LZK	Baxter, Cleburne, Izard, Pope, Searcy, Stone and 1 more	5 hr
May 31, 3:27 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery	63 min
May 31, 3:38 AM CDT	Flash Flood Warning	LZK	Cleburne, Independence, Izard, Jackson, Stone, White and 1 more	5 hr
May 31, 3:58 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Montgomery, Saline	62 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

Shreveport, LA (KSHV), launched 00:00Z, 1.8 hours before the alert went out and 328 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: 1600 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1217 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 7.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 8:09 PM CDT	Mesoscale Discussion	SPC	Arkansas, Benton, Cleburne, Cleveland, Conway, Crawford and 30 more	66 min
May 30, 11:28 PM CDT	Mesoscale Discussion	SPC	Arkansas, Baxter, Boone, Cleburne, Cleveland, Conway and 36 more	2 hr
May 31, 1:57 AM CDT	Mesoscale Discussion	SPC	Arkansas, Baxter, Clay, Cleburne, Conway, Craighead and 40 more	93 min
May 31, 3:32 AM CDT	Mesoscale Discussion	SPC	Cleburne, Conway, Craighead, Cross, Faulkner, Garland and 16 more	28 min

Nearby

Tornado Watches in Arkansas, 2013 Every tornado watch in 2013

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.