Alert archive / Mississippi / Tornado Watches in 2008

Tornado Watch 298

May 10, 20084 states

The Storm Prediction Center issued this tornado watch at May 10, 2008, 4:27 PM CDT for 4 states. It was in force for 10 hr.

The area

The outline as issued.

The facts

Issued: May 10, 2008, 4:27 PM CDT (21:27 UTC)
Expired: May 11, 2008, 2:00 AM CDT
In force: 10 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 60 kt

All 51 counties

Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Lawrence County, AR, Lee County, AR, Mississippi County, AR, Phillips County, AR, Poinsett County, AR, Randolph County, AR, St. Francis County, AR, Dunklin County, MO, Pemiscot County, MO, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Shelby County, TN, Tipton County, TN

The radar

The Memphis radar (KNQA), 13 km from the middle of the area, began a volume at 21:29 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: 50%
One or more EF2 to EF5 tornadoes: 40%
Ten or more severe wind reports: 50%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
May 10, 4:34 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Greene, Lawrence	56 min
May 10, 5:24 PM CDT	Tornado Warning	MEG	Craighead, Poinsett	51 min
May 10, 5:27 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Greene, Lawrence	48 min
May 10, 6:09 PM CDT	Tornado Warning	MEG	Craighead, Mississippi, Poinsett	36 min
May 10, 6:14 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Mississippi	31 min
May 10, 6:42 PM CDT	Tornado Warning	MEG	Mississippi	48 min
May 10, 6:48 PM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Lee, St. Francis	42 min
May 10, 6:58 PM CDT	Tornado Warning	MEG	Crittenden, Lee, St. Francis	47 min
May 10, 7:17 PM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Cross, Mississippi, Poinsett	43 min
May 10, 7:25 PM CDT	Tornado Warning	MEG	Haywood, Lauderdale, Tipton	50 min
May 10, 7:35 PM CDT	Flash Flood Warning	MEG	Crittenden, Cross, Lee, St. Francis	4 hr
May 10, 7:37 PM CDT	Tornado Warning	MEG	Crittenden, Lee, St. Francis	53 min
May 10, 7:42 PM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Lee, St. Francis	48 min
May 10, 7:43 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Shelby, Tipton	47 min
May 10, 8:01 PM CDT	Tornado Warning	MEG	Cross, St. Francis	32 min
May 10, 8:18 PM CDT	Tornado Warning	MEG	Phillips	57 min
May 10, 8:27 PM CDT	Severe Thunderstorm Warning	MEG	Crittenden	48 min
May 10, 8:28 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Haywood, Shelby, Tipton	47 min
May 10, 8:35 PM CDT	Severe Thunderstorm Warning	MEG	Shelby	40 min
May 10, 8:36 PM CDT	Flash Flood Warning	MEG	DeSoto, Tate, Tunica	4 hr
May 10, 8:45 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardin, Henderson, McNairy	45 min
May 10, 8:51 PM CDT	Severe Thunderstorm Warning	MEG	Lee, Phillips	54 min
May 10, 8:53 PM CDT	Tornado Warning	MEG	Phillips	52 min
May 10, 8:53 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman	52 min
May 10, 8:54 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Fayette, Hardeman, Hardin, McNairy	51 min
May 10, 8:58 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, DeSoto, Marshall, Prentiss, Tate and 2 more	47 min
May 10, 9:04 PM CDT	Flash Flood Warning	MEG	Crockett, Fayette, Hardeman, Haywood, Lauderdale, Madison and 2 more	6 hr
May 10, 9:10 PM CDT	Flash Flood Warning	MEG	Lee, Phillips	4 hr
May 10, 9:10 PM CDT	Tornado Warning	MEG	Benton, Marshall	50 min
May 10, 9:14 PM CDT	Tornado Warning	MEG	Benton, Marshall, Tate	46 min
May 10, 9:25 PM CDT	Flash Flood Warning	MEG	Chester, Decatur, Hardeman, Hardin, Henderson, McNairy and 1 more	4 hr
May 10, 9:28 PM CDT	Flash Flood Warning	MEG	Benton, Marshall, Tate	4 hr
May 10, 9:34 PM CDT	Tornado Warning	MEG	Lafayette, Panola, Quitman, Tallahatchie, Yalobusha	41 min
May 10, 9:36 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Hardeman, Hardin, Henderson, McNairy, Madison	54 min
May 10, 9:38 PM CDT	Tornado Warning	MEG	Alcorn, Benton, Marshall, Prentiss, Tippah, Union	52 min
May 10, 9:54 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma	35 min
May 10, 10:07 PM CDT	Severe Thunderstorm Warning	MEG	Lee, Pontotoc, Union	38 min
May 10, 10:13 PM CDT	Tornado Warning	MEG	Calhoun, Lafayette, Panola, Tallahatchie, Yalobusha	47 min
May 10, 10:17 PM CDT	Tornado Warning	MEG	Alcorn, Prentiss, Tippah, Tishomingo	43 min
May 10, 10:19 PM CDT	Severe Thunderstorm Warning	MEG	Decatur, Hardin, McNairy	41 min
May 10, 10:24 PM CDT	Severe Thunderstorm Warning	MEG	Quitman, Tallahatchie, Yalobusha	36 min
May 10, 10:26 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss, Tishomingo, Union	49 min
May 10, 10:36 PM CDT	Flash Flood Warning	MEG	Calhoun, Lafayette, Lee, Marshall, Panola, Pontotoc and 4 more	3 hr
May 10, 10:57 PM CDT	Tornado Warning	MEG	Calhoun, Chickasaw, Pontotoc, Yalobusha	48 min
May 10, 11:09 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba	21 min
May 10, 11:15 PM CDT	Severe Thunderstorm Warning	MEG	Tallahatchie, Yalobusha	30 min
May 10, 11:30 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba	15 min
May 10, 11:36 PM CDT	Tornado Warning	MEG	Yalobusha	39 min
May 10, 11:43 PM CDT	Severe Thunderstorm Warning	MEG	Panola, Tallahatchie, Yalobusha	32 min
May 10, 11:43 PM CDT	Tornado Warning	MEG	Calhoun, Chickasaw	47 min
May 11, 12:03 AM CDT	Tornado Warning	MEG	Calhoun, Yalobusha	42 min
May 11, 12:20 AM CDT	Severe Thunderstorm Warning	MEG	Monroe	40 min
May 11, 12:28 AM CDT	Tornado Warning	MEG	Calhoun, Chickasaw	30 min
May 11, 12:57 AM CDT	Severe Thunderstorm Warning	MEG	Monroe	35 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, 9.5 hours before the alert went out and 58 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: 661 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 247 m²/s²
0-3 km storm-relative helicity: 337 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
May 10, 4:05 AM CDT	Mesoscale Discussion	SPC	Baxter, Boone, Carroll, Clay, Cleburne, Craighead and 21 more	115 min
May 10, 7:36 AM CDT	Mesoscale Discussion	SPC	Benton, Carroll, Crawford, Franklin, Hempstead, Howard and 12 more	2 hr
May 10, 9:40 AM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 37 more	65 min
May 10, 10:11 AM CDT	Tornado Watch	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 29 more	5 hr
May 10, 10:55 AM CDT	Mesoscale Discussion	SPC	Benton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more	2 hr
May 10, 11:29 AM CDT	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Conway, Crawford and 15 more	9 hr
May 10, 12:34 PM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Fulton, Greene, Independence, Lawrence and 4 more	116 min
May 10, 2:23 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 25 more	97 min
May 10, 3:36 PM CDT	Tornado Watch PDS	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 36 more	4 hr
May 10, 5:13 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Crawford, Franklin and 9 more	2 hr
May 10, 6:22 PM CDT	Mesoscale Discussion	SPC	Arkansas, Bradley, Calhoun, Chicot, Clark, Cleveland and 28 more	83 min
May 10, 6:51 PM CDT	Tornado Watch PDS	SPC	Arkansas, Ashley, Baxter, Boone, Bradley, Calhoun and 50 more	7 hr
May 9, 11:08 PM CDT	Mesoscale Discussion	SPC	Alcorn, Calhoun, Chickasaw, Choctaw, Clay, Itawamba and 13 more	2 hr
May 10, 2:28 PM CDT	Mesoscale Discussion	SPC	Choctaw, Clay, Lowndes, Monroe, Noxubee, Oktibbeha and 2 more	2 hr
May 9, 7:55 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Bledsoe, Blount, Bradley, Cocke, Grainger and 18 more	4 hr
May 9, 10:37 PM CDT	Mesoscale Discussion	SPC	Blount, Cocke, Jefferson, Monroe, Sevier	53 min

Nearby

Tornado Watches in Mississippi, 2008 Tornado Watches in Tennessee, 2008 Tornado Watches in Arkansas, 2008 Every tornado watch in 2008

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.