Alert archive / Missouri / Tornado Watches in 2010

Tornado Watch 27

March 10, 20106 states

The Storm Prediction Center issued this tornado watch at Mar 10, 2010, 7:48 PM CST for 6 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Mar 10, 2010, 7:48 PM CST (01:48 UTC)
Expired: Mar 11, 2010, 2:00 AM CST
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 116 counties

Arkansas County, AR, Clay County, AR, Cleburne County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Desha County, AR, Drew County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Randolph County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, White County, AR, Woodruff County, AR, Adams County, IL, Alexander County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Franklin County, IL, Greene County, IL, Jackson County, IL, Jefferson County, IL, Jersey County, IL, Johnson County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Perry County, IL, Pike County, IL, Pulaski County, IL, Randolph County, IL, Saint Clair County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Hickman County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Dunklin County, MO, Franklin County, MO, Gasconade County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Mississippi County, MO, Montgomery County, MO, New Madrid County, MO, Oregon County, MO, Osage County, MO, Pemiscot County, MO, Perry County, MO, Phelps County, MO, Pike County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Wayne County, MO, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tunica County, MS, Yalobusha County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN

The radar

The Paducah radar (KPAH), 179 km from the middle of the area, began a volume at 01:49 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: 40%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 30%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 40%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Mar 10, 7:54 PM CST	Severe Thunderstorm Warning	LZK	Cleburne, Independence, Stone, Van Buren	51 min
Mar 10, 7:56 PM CST	Severe Thunderstorm Warning	MEG	Randolph	64 min
Mar 10, 7:59 PM CST	Severe Thunderstorm Warning	MEG	Lawrence, Randolph	26 min
Mar 10, 8:02 PM CST	Severe Thunderstorm Warning	LZK	Cleburne, Faulkner, Independence, Jackson, Lonoke, White	43 min
Mar 10, 8:07 PM CST	Severe Thunderstorm Warning	LZK	Faulkner, Grant, Lonoke, Pulaski, Saline	38 min
Mar 10, 8:10 PM CST	Tornado Warning	MEG	Clay, Randolph	50 min
Mar 10, 8:26 PM CST	Tornado Warning	LZK	Cleburne, Independence, Jackson, White	49 min
Mar 10, 8:32 PM CST	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Pulaski, White	43 min
Mar 10, 8:50 PM CST	Severe Thunderstorm Warning	LZK	Independence, Izard, Sharp	40 min
Mar 10, 9:00 PM CST	Severe Thunderstorm Warning	PAH	Butler, Ripley	45 min
Mar 10, 9:03 PM CST	Severe Thunderstorm Warning	LZK	Arkansas, Grant, Jefferson, Lonoke, Prairie, Pulaski	42 min
Mar 10, 9:05 PM CST	Severe Thunderstorm Warning	LZK	Cleburne, Conway, Faulkner, Independence, Lonoke, Prairie and 3 more	40 min
Mar 10, 9:08 PM CST	Flash Flood Warning	MEG	Lawrence, Randolph	4 hr
Mar 10, 9:12 PM CST	Tornado Warning	LZK	Cleburne, Faulkner, Independence, Stone, Van Buren, White	48 min
Mar 10, 9:16 PM CST	Tornado Warning	LZK	Independence, Jackson, Sharp, White	44 min
Mar 10, 9:38 PM CST	Severe Thunderstorm Warning	PAH	Butler, Ripley, Wayne	67 min
Mar 10, 9:49 PM CST	Severe Thunderstorm Warning	LZK	Cleburne, Independence, Jackson, Lonoke, Monroe, Prairie and 2 more	56 min
Mar 10, 10:07 PM CST	Severe Thunderstorm Warning	LZK	Independence, Jackson, Sharp	38 min
Mar 10, 10:21 PM CST	Severe Thunderstorm Warning	LZK	Arkansas, Desha, Jefferson, Lincoln, Lonoke, Monroe and 1 more	54 min
Mar 10, 10:21 PM CST	Tornado Warning	LSX	Callaway, Cole, Osage	24 min
Mar 10, 10:28 PM CST	Severe Thunderstorm Warning	MEG	Craighead, Greene, Lawrence, Poinsett	62 min
Mar 10, 10:38 PM CST	Severe Thunderstorm Warning	PAH	Bollinger, Wayne	52 min
Mar 10, 10:43 PM CST	Severe Thunderstorm Warning	MEG	Phillips	62 min
Mar 10, 10:44 PM CST	Tornado Warning	LSX	Audrain, Callaway, Montgomery	46 min
Mar 10, 10:47 PM CST	Severe Thunderstorm Warning	LSX	Madison	28 min
Mar 10, 10:57 PM CST	Severe Thunderstorm Warning	LSX	Callaway, Gasconade, Montgomery, Osage	33 min
Mar 10, 11:04 PM CST	Severe Thunderstorm Warning	MEG	Lee, St. Francis	56 min
Mar 10, 11:09 PM CST	Severe Thunderstorm Warning	LSX	Audrain, Lincoln, Montgomery, Pike, Warren	36 min
Mar 10, 11:09 PM CST	Severe Thunderstorm Warning	PAH	Bollinger, Cape Girardeau, Perry	51 min
Mar 10, 11:17 PM CST	Severe Thunderstorm Warning	LZK	Arkansas, Bradley, Desha, Drew, Jefferson, Lincoln and 1 more	43 min
Mar 10, 11:47 PM CST	Severe Thunderstorm Warning	LSX	Lincoln, Pike	28 min
Mar 10, 11:59 PM CST	Tornado Warning	MEG	Crittenden, Cross, Mississippi, Poinsett	16 min
Mar 11, 12:01 AM CST	Severe Thunderstorm Warning	MEG	Crittenden	44 min
Mar 11, 12:30 AM CST	Flash Flood Warning	MEG	Crittenden, Lee	2 hr
Mar 11, 12:34 AM CST	Severe Thunderstorm Warning	MEG	Mississippi	41 min
Mar 11, 12:56 AM CST	Severe Thunderstorm Warning	MEG	DeSoto, Marshall, Panola, Quitman, Tate, Tunica	64 min
Mar 11, 1:02 AM CST	Severe Thunderstorm Warning	MEG	Mississippi	58 min
Mar 11, 1:21 AM CST	Severe Thunderstorm Warning	MEG	Benton, Marshall, Tate	54 min
Mar 11, 1:27 AM CST	Flash Flood Warning	MEG	Benton, DeSoto, Lafayette, Marshall, Panola, Tate and 1 more	3 hr
Mar 11, 1:32 AM CST	Flash Flood Warning	MEG	Calhoun, Lafayette, Panola, Pontotoc, Quitman, Tallahatchie and 2 more	4 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

Little Rock, AR (KLZK), launched 00:00Z, 1.8 hours before the alert went out and 254 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: 1389 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1112 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 6.7

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 10, 6:54 PM CST	Mesoscale Discussion	SPC	Clay, Craighead, Crittenden, Cross, Greene, Jackson and 9 more	96 min
Mar 10, 7:24 PM CST	Tornado Watch	SPC	Ashley, Chicot	8 hr
Mar 10, 8:58 PM CST	Mesoscale Discussion	SPC	Calhoun, Clark, Columbia, Conway, Dallas, Faulkner and 10 more	62 min
Mar 10, 10:23 PM CST	Mesoscale Discussion	SPC	Chicot	67 min
Mar 10, 11:08 PM CST	Mesoscale Discussion	SPC	Arkansas, Clay, Craighead, Crittenden, Cross, Greene and 12 more	97 min
Mar 11, 1:21 AM CST	Mesoscale Discussion	SPC	Alexander, Bond, Clinton, Franklin, Jackson, Jefferson and 16 more	54 min
Mar 11, 1:56 PM CST	Mesoscale Discussion	SPC	Edgar, Iroquois, Vermilion	94 min
Mar 10, 7:36 PM CST	Mesoscale Discussion	SPC	George, Hancock, Harrison, Jackson, Stone	54 min
Mar 10, 7:46 PM CST	Tornado Watch	SPC	Amite, Hancock, Harrison, Jackson, Pearl River, Pike and 2 more	4 hr
Mar 11, 1:42 AM CST	Tornado Watch	SPC	Alcorn, Attala, Benton, Calhoun, Carroll, Chickasaw and 40 more	4 hr
Mar 11, 4:36 AM CST	Mesoscale Discussion	SPC	Clarke, Covington, Jasper, Jones, Kemper, Lauderdale and 5 more	114 min
Mar 11, 4:54 PM CST	Mesoscale Discussion	SPC	Adams, Amite, Claiborne, Copiah, Franklin, Jefferson and 4 more	66 min
Mar 10, 7:13 PM CST	Mesoscale Discussion	SPC	Barry, Barton, Bates, Camden, Cedar, Christian and 18 more	62 min

Nearby

Tornado Watches in Missouri, 2010 Tornado Watches in Arkansas, 2010 Tornado Watches in Illinois, 2010 Every tornado watch in 2010

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.