Alert archive / Mississippi / Tornado Watches in 2010
Tornado Watch 127
The Storm Prediction Center issued this tornado watch at May 1, 2010, 8:06 PM CDT for 4 states. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- May 1, 2010, 8:06 PM CDT (01:06 UTC)
- Expired
- May 2, 2010, 3:40 AM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Particularly dangerous situation
- Yes
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 56 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, Carroll County, TN, 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, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN
The radar
The Memphis radar (KNQA), 14 km from the middle of the area, began a volume at 01:08 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
- 95%
- One or more EF2 to EF5 tornadoes
- 80%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 50%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
57 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 8:22 PM CDT | Flash Flood Warning | MEG | Lawrence, Randolph | 5 hr |
| May 1, 8:22 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Cross, Greene, Lawrence, Poinsett | 53 min |
| May 1, 8:33 PM CDT | Tornado Warning | MEG | Cross, St. Francis | 42 min |
| May 1, 8:37 PM CDT | Tornado Warning | MEG | Lee, Phillips | 53 min |
| May 1, 8:40 PM CDT | Severe Thunderstorm Warning | MEG | Lawrence, Randolph | 50 min |
| May 1, 8:51 PM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Chickasaw | 39 min |
| May 1, 8:58 PM CDT | Flash Flood Warning | MEG | Craighead, Cross, Poinsett | 3 hr |
| May 1, 9:07 PM CDT | Tornado Warning | MEG | Cross, Poinsett | 38 min |
| May 1, 9:10 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Greene, Lawrence, Poinsett | 50 min |
| May 1, 9:11 PM CDT | Flash Flood Warning | MEG | Crittenden, Lee, Phillips, St. Francis | 81 min |
| May 1, 9:13 PM CDT | Tornado Warning | MEG | Lee, Phillips | 47 min |
| May 1, 9:28 PM CDT | Severe Thunderstorm Warning | MEG | Clay, Greene, Lawrence, Randolph | 47 min |
| May 1, 9:28 PM CDT | Flash Flood Warning | MEG | Chester, Decatur, Hardeman, Hardin, Henderson, McNairy and 1 more | 119 min |
| May 1, 9:35 PM CDT | Flash Flood Warning | MEG | Clay, Greene | 3 hr |
| May 1, 9:38 PM CDT | Tornado Warning | MEG | Craighead, Mississippi, Poinsett | 52 min |
| May 1, 9:39 PM CDT | Tornado Warning | MEG | Crittenden, Lee, St. Francis | 66 min |
| May 1, 10:03 PM CDT | Severe Thunderstorm Warning | MEG | Clay, Greene, Mississippi | 42 min |
| May 1, 10:10 PM CDT | Tornado Warning | MEG | Mississippi | 50 min |
| May 1, 10:19 PM CDT | Flash Flood Warning | MEG | Mississippi | 3 hr |
| May 1, 10:25 PM CDT | Tornado Warning | MEG | Crittenden | 50 min |
| May 1, 10:34 PM CDT | Severe Thunderstorm Warning | MEG | Pemiscot | 41 min |
| May 1, 10:38 PM CDT | Flash Flood Warning | MEG | Carroll, Dyer, Gibson, Henry, Lake, Obion and 1 more | 3 hr |
| May 1, 10:42 PM CDT | Tornado Warning | MEG | Pemiscot | 48 min |
| May 1, 10:58 PM CDT | Tornado Warning | MEG | Fayette, Haywood, Lauderdale, Shelby, Tipton | 47 min |
| May 1, 11:09 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Cross, Poinsett | 51 min |
| May 1, 11:12 PM CDT | Tornado Warning | MEG | Dyer, Lake, Obion | 32 min |
| May 1, 11:30 PM CDT | Tornado Warning | MEG | Crockett, Dyer, Haywood, Lauderdale | 45 min |
| May 1, 11:40 PM CDT | Severe Thunderstorm Warning | MEG | Clay, Craighead, Greene, Mississippi | 50 min |
| May 1, 11:47 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Mississippi, Poinsett | 28 min |
| May 2, 12:03 AM CDT | Severe Thunderstorm Warning | MEG | Clay, Mississippi | 42 min |
| May 2, 12:11 AM CDT | Flash Flood Warning | MEG | Craighead, Cross, Poinsett | 84 min |
| May 2, 12:19 AM CDT | Tornado Warning | MEG | Pemiscot | 41 min |
| May 2, 12:33 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Mississippi, Poinsett | 42 min |
| May 2, 12:37 AM CDT | Flash Flood Warning | MEG | Clay, Greene | 99 min |
| May 2, 12:48 AM CDT | Severe Thunderstorm Warning | MEG | Pemiscot | 42 min |
| May 2, 12:51 AM CDT | Tornado Warning | MEG | Lake, Obion | 39 min |
| May 2, 12:58 AM CDT | Tornado Warning | MEG | Pemiscot | 47 min |
| May 2, 1:06 AM CDT | Flash Flood Warning | MEG | Mississippi | 81 min |
| May 2, 1:09 AM CDT | Tornado Warning | MEG | DeSoto | 36 min |
| May 2, 1:24 AM CDT | Severe Thunderstorm Warning | MEG | Dyer, Gibson, Lake, Obion, Weakley | 51 min |
| May 2, 1:31 AM CDT | Severe Thunderstorm Warning | MEG | Crockett, Haywood, Lauderdale, Tipton | 44 min |
| May 2, 1:35 AM CDT | Tornado Warning | MEG | Obion, Weakley | 40 min |
| May 2, 1:36 AM CDT | Tornado Warning | MEG | Lafayette, Panola | 39 min |
| May 2, 1:40 AM CDT | Flash Flood Warning | MEG | Dyer, Gibson, Lake, Obion, Weakley | 3 hr |
| May 2, 1:40 AM CDT | Severe Thunderstorm Warning | MEG | Fayette, Shelby | 50 min |
| May 2, 1:43 AM CDT | Severe Thunderstorm Warning | MEG | Crockett, Haywood, Lauderdale, Tipton | 47 min |
| May 2, 2:04 AM CDT | Tornado Warning | MEG | Benton, Marshall | 41 min |
| May 2, 2:09 AM CDT | Tornado Warning | MEG | Crockett, Gibson, Haywood, Madison | 40 min |
| May 2, 2:14 AM CDT | Severe Thunderstorm Warning | MEG | Fayette, Hardeman, Haywood, Madison | 46 min |
| May 2, 2:16 AM CDT | Severe Thunderstorm Warning | MEG | Panola, Quitman, Tallahatchie | 44 min |
| May 2, 2:32 AM CDT | Tornado Warning | MEG | Carroll, Gibson, Henry | 58 min |
| May 2, 2:34 AM CDT | Tornado Warning | MEG | Benton, Tippah | 41 min |
| May 2, 3:01 AM CDT | Tornado Warning | MEG | Alcorn, Tippah | 51 min |
| May 2, 3:09 AM CDT | Tornado Warning | MEG | Lafayette, Marshall, Panola, Tate | 36 min |
| May 2, 3:28 AM CDT | Tornado Warning | MEG | Chester, Decatur, Hardin, Henderson, McNairy | 47 min |
| May 2, 3:30 AM CDT | Flash Flood Warning | MEG | Benton, Marshall, Tippah | 6 hr |
| May 2, 3:33 AM CDT | Tornado Warning | MEG | Benton, Lafayette, Marshall, Tippah, Union | 42 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 00:00Z, 1.1 hours before the alert went out and 71 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.
- Mixed-layer CAPE
- 3084 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 561 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 305 m²/s²
- 0-3 km storm-relative helicity
- 312 m²/s²
- Significant tornado parameter
- 6.8
- Supercell composite
- 25.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 7:11 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 51 more | 64 min |
| May 1, 7:30 PM CDT | Mesoscale Discussion | SPC | Craighead, Crittenden, Cross, Greene, Lawrence, Lee and 4 more | 30 min |
| May 1, 8:31 PM CDT | Mesoscale Discussion | SPC | Arkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 35 more | 44 min |
| May 1, 9:53 PM CDT | Tornado Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 29 more | 6 hr |
| May 1, 11:38 PM CDT | Mesoscale Discussion | SPC | Arkansas, Clay, Cleburne, Conway, Craighead, Crittenden and 24 more | 67 min |
| May 2, 2:33 AM CDT | Mesoscale Discussion | SPC | Arkansas, Bradley, Chicot, Clay, Cleveland, Craighead and 16 more | 87 min |
| May 2, 6:55 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 5 more | 2 hr |
| May 1, 9:19 PM CDT | Mesoscale Discussion | SPC | Attala, Carroll, Chickasaw, Choctaw, Clay, Itawamba and 14 more | 56 min |
| May 2, 3:36 AM CDT | Tornado Watch | SPC | Alcorn, Benton, Bolivar, Calhoun, Carroll, Chickasaw and 27 more | 8 hr |
| May 2, 6:37 AM CDT | Mesoscale Discussion | SPC | Alcorn, Benton, Calhoun, Carroll, Chickasaw, Choctaw and 24 more | 113 min |
| May 2, 8:01 AM CDT | Tornado Watch | SPC | Amite, Attala, Bolivar, Carroll, Choctaw, Claiborne and 52 more | 7 hr |
| May 2, 11:15 AM CDT | Mesoscale Discussion | SPC | Alcorn, Chickasaw, Clay, Itawamba, Lee, Monroe and 6 more | 60 min |
| May 2, 2:28 PM CDT | Mesoscale Discussion | SPC | Lowndes | 62 min |
| May 2, 6:29 PM CDT | Mesoscale Discussion | SPC | Kemper, Lauderdale, Leake, Lowndes, Monroe, Neshoba and 3 more | 61 min |
| May 1, 9:45 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Iron, Madison and 9 more | 30 min |
| May 1, 10:14 PM CDT | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Iron, Jefferson and 15 more | 7 hr |
| May 2, 2:09 AM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Iron, Madison and 10 more | 2 hr |
| May 2, 2:15 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Caldwell, Clay, Clinton and 10 more | 90 min |
| May 1, 7:07 PM CDT | Mesoscale Discussion | SPC | Bledsoe, Blount, Bradley, Cannon, Coffee, Franklin and 15 more | 53 min |
| May 1, 10:22 PM CDT | Tornado Watch | SPC | Bedford, Benton, Cannon, Cheatham, Coffee, Davidson and 19 more | 5 hr |
| May 2, 11:57 AM CDT | Severe Thunderstorm Watch | SPC | Bedford, Cannon, Clay, Coffee, Cumberland, Davidson and 24 more | 7 hr |
| May 2, 2:32 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Campbell, Claiborne, Hancock, Morgan, Scott and 1 more | 5 hr |
| May 2, 6:12 PM CDT | Mesoscale Discussion | SPC | Anderson, Campbell, Claiborne, Grainger, Hamblen, Hancock and 5 more | 93 min |
Nearby
Tornado Watches in Mississippi, 2010Tornado Watches in Tennessee, 2010Tornado Watches in Arkansas, 2010Every 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.