Alert archive / Arkansas / Tornado Watches in 2010
Tornado Watch 125
The Storm Prediction Center issued this tornado watch at May 1, 2010, 3:18 PM CDT for 49 counties in Arkansas; 5 parishes in Louisiana; 13 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 1, 2010, 3:18 PM CDT (20:18 UTC)
- Expired
- May 1, 2010, 10:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Particularly dangerous situation
- Yes
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 70 kt
All 67 counties
Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross 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, Independence County, AR, Jackson County, AR, Jefferson County, AR, Lafayette County, AR, Lee County, AR, Lincoln County, AR, Little River County, AR, Lonoke County, AR, Miller County, AR, Mississippi County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Pike County, AR, Poinsett County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Sevier County, AR, St. Francis County, AR, Union County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Webster Parish, LA, Bowie County, TX, Cass County, TX, Cherokee County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Rusk County, TX, Shelby County, TX, Smith County, TX, Upshur County, TX
The radar
The Little Rock radar (KLZK), 49 km from the middle of the area, began a volume at 20:20 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
- 80%
- One or more gusts of 65 knots or more
- 60%
- Ten or more severe hail reports
- 95%
- One or more hailstones of 2 inches or more
- 60%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
64 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 3:43 PM CDT | Flash Flood Warning | MEG | Crittenden | 2 hr |
| May 1, 5:50 PM CDT | Severe Thunderstorm Warning | LZK | Garland, Hot Spring, Perry, Saline | 40 min |
| May 1, 6:15 PM CDT | Tornado Warning | SHV | Union | 31 min |
| May 1, 6:19 PM CDT | Tornado Warning | LZK | Clark, Dallas, Ouachita | 41 min |
| May 1, 6:22 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Faulkner, Perry, Pulaski, Saline | 38 min |
| May 1, 6:28 PM CDT | Tornado Warning | LZK | Bradley, Calhoun, Cleveland, Drew | 47 min |
| May 1, 6:29 PM CDT | Severe Thunderstorm Warning | LZK | Garland, Perry, Pulaski, Saline | 46 min |
| May 1, 6:34 PM CDT | Severe Thunderstorm Warning | SHV | Miller | 26 min |
| May 1, 6:36 PM CDT | Tornado Warning | LZK | Montgomery, Pike, Polk | 24 min |
| May 1, 6:37 PM CDT | Tornado Warning | LZK | Garland, Perry, Pulaski, Saline | 38 min |
| May 1, 6:42 PM CDT | Tornado Warning | LZK | Cleveland, Dallas, Grant, Jefferson | 48 min |
| May 1, 6:44 PM CDT | Tornado Warning | LZK | Faulkner, Pulaski | 46 min |
| May 1, 6:54 PM CDT | Severe Thunderstorm Warning | SHV | Hempstead, Howard, Little River, Miller, Sevier | 36 min |
| May 1, 7:00 PM CDT | Severe Thunderstorm Warning | SHV | Hempstead, Howard, Little River, Miller | 45 min |
| May 1, 7:00 PM CDT | Tornado Warning | SHV | Union | 35 min |
| May 1, 7:01 PM CDT | Severe Thunderstorm Warning | LZK | Garland, Montgomery, Scott, Yell | 44 min |
| May 1, 7:03 PM CDT | Tornado Warning | LZK | Jefferson, Lonoke, Prairie, Pulaski | 42 min |
| May 1, 7:07 PM CDT | Tornado Warning | LZK | Cleveland, Dallas, Grant, Ouachita | 23 min |
| May 1, 7:08 PM CDT | Tornado Warning | LZK | Arkansas, Jefferson, Lonoke, Prairie, Pulaski | 52 min |
| May 1, 7:12 PM CDT | Tornado Warning | LZK | Bradley, Calhoun, Cleveland, Drew, Jefferson, Lincoln | 48 min |
| May 1, 7:14 PM CDT | Severe Thunderstorm Warning | LZK | Bradley, Calhoun, Cleveland, Dallas, Ouachita | 46 min |
| May 1, 7:16 PM CDT | Tornado Warning | LZK | Faulkner, Perry, Pulaski, Saline | 44 min |
| May 1, 7:18 PM CDT | Tornado Warning | LZK | Montgomery, Perry, Scott, Yell | 27 min |
| May 1, 7:21 PM CDT | Tornado Warning | LZK | Cleburne, Faulkner, White | 39 min |
| May 1, 7:21 PM CDT | Tornado Warning | SHV | Howard, Sevier | 39 min |
| May 1, 7:25 PM CDT | Severe Thunderstorm Warning | LZK | Clark, Dallas, Garland, Hot Spring, Saline | 35 min |
| May 1, 7:26 PM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Gregg, Rusk, Smith | 49 min |
| May 1, 7:28 PM CDT | Tornado Warning | LZK | Cleveland, Dallas, Grant, Jefferson | 32 min |
| May 1, 7:31 PM CDT | Tornado Warning | LZK | Arkansas, Jefferson, Lonoke, Prairie | 44 min |
| May 1, 7:33 PM CDT | Severe Thunderstorm Warning | SHV | Hempstead, Howard, Little River, Miller | 42 min |
| May 1, 7:34 PM CDT | Tornado Warning | LZK | Drew, Lincoln | 41 min |
| May 1, 7:46 PM CDT | Severe Thunderstorm Warning | SHV | Gregg, Harrison, Panola, Rusk | 44 min |
| May 1, 7:48 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Jackson, Prairie, White, Woodruff | 42 min |
| May 1, 7:50 PM CDT | Severe Thunderstorm Warning | SHV | Hempstead, Nevada | 25 min |
| May 1, 7:52 PM CDT | Tornado Warning | LZK | Garland, Hot Spring, Montgomery, Pike, Polk | 23 min |
| May 1, 7:53 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Johnson, Logan, Pope, Van Buren, Yell | 52 min |
| May 1, 7:58 PM CDT | Severe Thunderstorm Warning | LZK | Clark, Dallas, Pike | 47 min |
| May 1, 8:01 PM CDT | Tornado Warning | LZK | Monroe, Prairie, Woodruff | 44 min |
| May 1, 8:04 PM CDT | Severe Thunderstorm Warning | SHV | Miller | 56 min |
| May 1, 8:07 PM CDT | Tornado Warning | LZK | Arkansas, Desha, Jefferson, Lincoln, Monroe | 53 min |
| May 1, 8:08 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Independence, Jackson, Sharp, White | 52 min |
| May 1, 8:10 PM CDT | Severe Thunderstorm Warning | LZK | Lonoke, Prairie, Pulaski, White | 15 min |
| May 1, 8:20 PM CDT | Severe Thunderstorm Warning | SHV | Miller | 40 min |
| May 1, 8:22 PM CDT | Severe Thunderstorm Warning | MEG | Craighead, Cross, Greene, Lawrence, Poinsett | 53 min |
| May 1, 8:29 PM CDT | Severe Thunderstorm Warning | LZK | Clark, Dallas, Garland, Grant, Hot Spring, Montgomery and 2 more | 46 min |
| May 1, 8:31 PM CDT | Tornado Warning | LZK | Garland, Montgomery, Perry, Saline, Yell | 29 min |
| May 1, 8:33 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Jackson, White, Woodruff | 42 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, 8:38 PM CDT | Tornado Warning | LZK | Monroe, Woodruff | 22 min |
| May 1, 8:44 PM CDT | Tornado Warning | LZK | Arkansas, Monroe | 26 min |
| May 1, 8:49 PM CDT | Tornado Warning | LZK | Clark, Dallas, Garland, Grant, Hot Spring, Saline | 26 min |
| May 1, 8:58 PM CDT | Flash Flood Warning | MEG | Craighead, Cross, Poinsett | 3 hr |
| May 1, 9:07 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Perry, Pope, Yell | 38 min |
| 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 | Tornado Warning | LZK | Grant, Hot Spring, Jefferson, Pulaski, Saline | 20 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, 9:27 PM CDT | Severe Thunderstorm Warning | SHV | Hempstead, Lafayette, Nevada | 33 min |
| May 1, 9:30 PM CDT | Severe Thunderstorm Warning | LZK | Faulkner, Grant, Hot Spring, Lonoke, Pulaski, Saline | 45 min |
| 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, 9:44 PM CDT | Tornado Warning | SHV | Hempstead, Nevada | 16 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, 8.3 hours before the alert went out and 238 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
- 6 J/kg
- Mixed-layer CIN
- -380 J/kg
- Mixed-layer LCL
- 1493 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 7:26 PM CDT | Mesoscale Discussion | SPC | Baxter, Cleburne, Conway, Faulkner, Fulton, Garland and 15 more | 2 hr |
| Apr 30, 9:09 PM CDT | Tornado Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 49 more | 7 hr |
| Apr 30, 10:43 PM CDT | Mesoscale Discussion | SPC | Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 49 more | 62 min |
| Apr 30, 11:41 PM CDT | Mesoscale Discussion | SPC | Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 45 more | 64 min |
| May 1, 2:25 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 40 more | 95 min |
| May 1, 3:11 AM CDT | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 24 more | 8 hr |
| May 1, 6:17 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 9 more | 88 min |
| May 1, 7:48 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 22 more | 57 min |
| May 1, 9:52 AM CDT | Tornado Watch | SPC | Ashley, Chicot | 8 hr |
| May 1, 11:19 AM CDT | Mesoscale Discussion | SPC | Crittenden | 56 min |
| May 1, 1:37 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 38 more | 53 min |
| May 1, 3:11 PM CDT | Mesoscale Discussion | SPC | Benton | 94 min |
| May 1, 5:43 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Clark, Cleveland and 31 more | 62 min |
| May 1, 12:43 AM CDT | Mesoscale Discussion | SPC | Bandera, Bastrop, Bell, Bexar, Blanco, Burnet and 26 more | 92 min |
| May 1, 1:02 AM CDT | Severe Thunderstorm Watch | SPC | Bandera, Bastrop, Bell, Bexar, Blanco, Bosque and 34 more | 8 hr |
| May 1, 5:40 AM CDT | Mesoscale Discussion | SPC | Anderson, Bandera, Bastrop, Bell, Bexar, Blanco and 55 more | 2 hr |
| May 1, 7:33 AM CDT | Mesoscale Discussion | SPC | Bandera, Bell, Blanco, Bosque, Burnet, Coryell and 24 more | 87 min |
Nearby
Tornado Watches in Arkansas, 2010Tornado Watches in Texas, 2010Tornado Watches in Louisiana, 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.