Alert archive / Arkansas / Severe Thunderstorm Watches in 2007

Severe Thunderstorm Watch 137

April 13, 200740 counties in Arkansas; 7 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Apr 13, 2007, 6:00 PM CDT for 40 counties in Arkansas; 7 counties in Mississippi. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Apr 13, 2007, 6:00 PM CDT (23:00 UTC)
Expired: Apr 14, 2007, 1:41 AM CDT
In force: 8 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 47 counties

Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleveland County, AR, Conway 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, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Polk County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bolivar County, MS, Coahoma County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Tunica County, MS, Washington County, MS

The radar

The Little Rock radar (KLZK), 54 km from the middle of the area, began a volume at 23:01 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: 10%
One or more EF2 to EF5 tornadoes: 5%
Ten or more severe wind reports: 20%
One or more gusts of 65 knots or more: 20%
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

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

Issued	Product	Office	Counties	Lasted
Apr 13, 6:03 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Quitman, Tunica	27 min
Apr 13, 6:12 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	18 min
Apr 13, 6:50 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland	40 min
Apr 13, 7:08 PM CDT	Severe Thunderstorm Warning	LZK	Hot Spring, Saline	36 min
Apr 13, 7:16 PM CDT	Severe Thunderstorm Warning	LZK	Lincoln	44 min
Apr 13, 7:22 PM CDT	Severe Thunderstorm Warning	MEG	Tunica	23 min
Apr 13, 7:29 PM CDT	Severe Thunderstorm Warning	LZK	Pulaski	31 min
Apr 13, 7:37 PM CDT	Severe Thunderstorm Warning	LZK	Garland	23 min
Apr 13, 7:37 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar	23 min
Apr 13, 8:12 PM CDT	Severe Thunderstorm Warning	LZK	Grant	33 min
Apr 13, 8:15 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas	45 min
Apr 13, 8:20 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	40 min
Apr 13, 8:29 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Pike	31 min
Apr 13, 8:31 PM CDT	Severe Thunderstorm Warning	LZK	Pulaski, Saline	29 min
Apr 13, 8:55 PM CDT	Severe Thunderstorm Warning	LZK	Grant	35 min
Apr 13, 9:15 PM CDT	Severe Thunderstorm Warning	JAN	Ashley, Chicot	23 min
Apr 13, 9:35 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Jefferson, Pulaski	25 min
Apr 13, 9:38 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Quitman	39 min
Apr 13, 10:03 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas	27 min
Apr 13, 10:14 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	31 min
Apr 13, 11:26 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	34 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 13, 12:37 PM CDT	Mesoscale Discussion	SPC	Calhoun, Clark, Columbia, Dallas, Garland, Hempstead and 13 more	113 min
Apr 13, 5:48 PM CDT	Tornado Watch PDS	SPC	Columbia, Lafayette, Miller, Union	8 hr

Nearby

Severe Thunderstorm Watches in Arkansas, 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; radar from the NEXRAD Level II archive.