Alert archive / Arkansas / Tornado Watches in 2010
Tornado Watch 116
The Storm Prediction Center issued this tornado watch at Apr 30, 2010, 6:24 PM CDT for 51 counties in Arkansas; 11 counties in Missouri; 6 counties in Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2010, 6:24 PM CDT (23:24 UTC)
- Expired
- Apr 30, 2010, 9:35 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 68 counties
Baxter County, AR, Boone County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Columbia County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Dallas County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Lafayette County, AR, Lawrence County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Marion County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Poinsett County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sevier County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Butler County, MO, Carter County, MO, Dent County, MO, Douglas County, MO, Howell County, MO, Oregon County, MO, Ozark County, MO, Ripley County, MO, Shannon County, MO, Texas County, MO, Wayne County, MO, Bowie County, TX, Cass County, TX, Franklin County, TX, Morris County, TX, Red River County, TX, Titus County, TX
The radar
The Little Rock radar (KLZK), 107 km from the middle of the area, began a volume at 23:25 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
- 80%
- One or more EF2 to EF5 tornadoes
- 50%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 80%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
46 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 6:33 PM CDT | Severe Thunderstorm Warning | SHV | Red River | 42 min |
| Apr 30, 6:35 PM CDT | Severe Thunderstorm Warning | SHV | Howard | 25 min |
| Apr 30, 6:38 PM CDT | Flash Flood Warning | SGF | Dent, Douglas, Howell, Ozark, Phelps, Pulaski and 4 more | 6 hr |
| Apr 30, 6:53 PM CDT | Severe Thunderstorm Warning | LZK | Boone, Marion, Newton, Searcy | 52 min |
| Apr 30, 6:55 PM CDT | Tornado Warning | SGF | Howell, Shannon, Texas | 50 min |
| Apr 30, 6:56 PM CDT | Tornado Warning | LZK | Conway, Van Buren | 49 min |
| Apr 30, 6:57 PM CDT | Severe Thunderstorm Warning | LZK | Logan, Montgomery, Pope, Scott, Yell | 48 min |
| Apr 30, 6:57 PM CDT | Severe Thunderstorm Warning | SGF | Ozark | 33 min |
| Apr 30, 7:00 PM CDT | Tornado Warning | LZK | Montgomery, Polk, Scott | 30 min |
| Apr 30, 7:03 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Pope, Yell | 42 min |
| Apr 30, 7:08 PM CDT | Tornado Warning | LZK | Conway, Pope, Van Buren, Yell | 52 min |
| Apr 30, 7:28 PM CDT | Severe Thunderstorm Warning | SGF | Howell | 47 min |
| Apr 30, 7:29 PM CDT | Tornado Warning | SHV | Little River, Sevier | 46 min |
| Apr 30, 7:38 PM CDT | Tornado Warning | SGF | Howell, Oregon, Shannon | 52 min |
| Apr 30, 7:40 PM CDT | Tornado Warning | LZK | Stone, Van Buren | 65 min |
| Apr 30, 7:41 PM CDT | Tornado Warning | LZK | Grant, Pulaski, Saline | 49 min |
| Apr 30, 7:42 PM CDT | Tornado Warning | LZK | Stone, Van Buren | 63 min |
| Apr 30, 7:45 PM CDT | Tornado Warning | SGF | Dent, Shannon | 45 min |
| Apr 30, 7:47 PM CDT | Severe Thunderstorm Warning | LZK | Garland, Montgomery, Perry, Saline, Scott, Yell | 43 min |
| Apr 30, 7:47 PM CDT | Severe Thunderstorm Warning | SHV | Red River | 58 min |
| Apr 30, 7:49 PM CDT | Tornado Warning | LZK | Conway, Van Buren | 41 min |
| Apr 30, 7:51 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Pope, Yell | 39 min |
| Apr 30, 7:54 PM CDT | Tornado Warning | PAH | Carter | 51 min |
| Apr 30, 8:01 PM CDT | Tornado Warning | LZK | Garland, Montgomery, Perry, Saline, Yell | 44 min |
| Apr 30, 8:08 PM CDT | Tornado Warning | SHV | Howard, Sevier | 52 min |
| Apr 30, 8:23 PM CDT | Tornado Warning | LZK | Lonoke, Pulaski, Saline | 37 min |
| Apr 30, 8:24 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Garland, Logan, Montgomery, Perry, Pope and 2 more | 51 min |
| Apr 30, 8:24 PM CDT | Tornado Warning | SGF | Oregon, Shannon | 66 min |
| Apr 30, 8:27 PM CDT | Tornado Warning | LZK | Fulton, Izard, Sharp, Stone | 21 min |
| Apr 30, 8:33 PM CDT | Tornado Warning | LZK | Cleburne, Stone, Van Buren | 42 min |
| Apr 30, 8:37 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Faulkner, Van Buren | 23 min |
| Apr 30, 8:38 PM CDT | Tornado Warning | PAH | Carter | 37 min |
| Apr 30, 8:40 PM CDT | Tornado Warning | LZK | Conway, Garland, Perry, Pope, Saline, Yell | 35 min |
| Apr 30, 8:44 PM CDT | Tornado Warning | LZK | Clark, Garland, Hot Spring, Montgomery, Pike, Polk | 31 min |
| Apr 30, 8:46 PM CDT | Tornado Warning | LZK | Clark, Dallas, Grant, Hot Spring, Jefferson | 44 min |
| Apr 30, 8:47 PM CDT | Severe Thunderstorm Warning | SHV | Little River, Sevier | 58 min |
| Apr 30, 8:57 PM CDT | Tornado Warning | LZK | Lonoke, Prairie, Pulaski, White | 48 min |
| Apr 30, 9:10 PM CDT | Tornado Warning | LZK | Conway, Faulkner, Perry, Pope, Saline, Yell | 22 min |
| Apr 30, 9:14 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Faulkner, Van Buren | 46 min |
| Apr 30, 9:14 PM CDT | Tornado Warning | LZK | Clark, Garland, Hot Spring, Montgomery, Pike, Polk | 31 min |
| Apr 30, 9:18 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Independence, Sharp, Stone | 57 min |
| Apr 30, 9:23 PM CDT | Tornado Warning | LZK | Dallas, Grant, Hot Spring, Saline | 37 min |
| Apr 30, 9:28 PM CDT | Tornado Warning | SHV | Howard, Little River, Sevier | 47 min |
| Apr 30, 9:30 PM CDT | Severe Thunderstorm Warning | LZK | Lonoke, Pulaski | 45 min |
| Apr 30, 9:34 PM CDT | Severe Thunderstorm Warning | PAH | Bollinger, Perry, Wayne | 41 min |
| Apr 30, 9:35 PM CDT | Tornado Warning | SHV | Nevada | 25 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
Springfield, MO (KSGF), launched 12:00Z, 11.4 hours before the alert went out and 177 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
- 217 J/kg
- Mixed-layer CIN
- -186 J/kg
- Mixed-layer LCL
- 903 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 250 m²/s²
- 0-3 km storm-relative helicity
- 221 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 1:11 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Conway, Crawford and 23 more | 2 hr |
| Apr 30, 1:46 PM CDT | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Conway, Crawford and 23 more | 5 hr |
| Apr 30, 5:53 PM CDT | Mesoscale Discussion | SPC | Arkansas, Baxter, Boone, Bradley, Calhoun, Carroll and 56 more | 37 min |
| Apr 29, 7:12 PM CDT | Mesoscale Discussion | SPC | Atchison, Holt | 63 min |
| Apr 29, 11:04 PM CDT | Mesoscale Discussion | SPC | Atchison, Holt | 26 min |
| Apr 29, 11:46 PM CDT | Severe Thunderstorm Watch | SPC | Andrew, Atchison, Buchanan, Holt, Nodaway | 4 hr |
| Apr 30, 2:12 AM CDT | Mesoscale Discussion | SPC | Andrew, Buchanan, Holt, Nodaway | 93 min |
| Apr 30, 9:18 AM CDT | Mesoscale Discussion | SPC | Adair, Audrain, Bates, Benton, Boone, Caldwell and 39 more | 57 min |
| Apr 30, 10:20 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Audrain, Benton, Boone, Caldwell, Callaway and 36 more | 5 hr |
| Apr 30, 1:22 PM CDT | Mesoscale Discussion | SPC | Adair, Bates, Benton, Boone, Caldwell, Carroll and 25 more | 53 min |
| Apr 30, 2:08 PM CDT | Mesoscale Discussion | SPC | Audrain, Callaway, Cole, Crawford, Franklin, Gasconade and 13 more | 67 min |
| Apr 30, 2:40 PM CDT | Tornado Watch | SPC | Audrain, Callaway, Crawford, Franklin, Gasconade, Iron and 16 more | 6 hr |
| Apr 30, 1:10 AM CDT | Mesoscale Discussion | SPC | Hardeman | 2 hr |
Nearby
Tornado Watches in Arkansas, 2010Tornado Watches in Missouri, 2010Tornado Watches in Texas, 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.