Alert archive / Arkansas / Tornado Watches in 2010
Tornado Watch 114
The Storm Prediction Center issued this tornado watch at Apr 30, 2010, 1:46 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2010, 1:46 PM CDT (18:46 UTC)
- Expired
- Apr 30, 2010, 6:37 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 70 kt
All 73 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Conway County, AR, Crawford County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Howard County, AR, Johnson County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Miller County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Van Buren County, AR, Washington County, AR, Yell County, AR, Barry County, MO, Christian County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK, Bowie County, TX, Cass County, TX, Delta County, TX, Fannin County, TX, Franklin County, TX, Hopkins County, TX, Hunt County, TX, Lamar County, TX, Morris County, TX, Red River County, TX, Titus County, TX
The radar
The Western Arkansas radar (KSRX), 95 km from the middle of the area, began a volume at 18:50 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
- 70%
- 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
- 70%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
42 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 1:57 PM CDT | Severe Thunderstorm Warning | SGF | Dade, Jasper, Lawrence, Newton | 32 min |
| Apr 30, 2:11 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Haskell, McIntosh, Muskogee, Sequoyah | 64 min |
| Apr 30, 2:16 PM CDT | Severe Thunderstorm Warning | SGF | Barry, McDonald, Newton | 44 min |
| Apr 30, 2:34 PM CDT | Severe Thunderstorm Warning | TSA | Benton | 11 min |
| Apr 30, 2:35 PM CDT | Severe Thunderstorm Warning | SGF | Barry | 39 min |
| Apr 30, 2:40 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Madison, Washington | 65 min |
| Apr 30, 2:44 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pittsburg, Pushmataha | 46 min |
| Apr 30, 2:59 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, LeFlore, Pushmataha | 46 min |
| Apr 30, 3:04 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Crawford, Madison, Washington | 56 min |
| Apr 30, 3:06 PM CDT | Severe Thunderstorm Warning | SGF | Barry, Christian, Lawrence, Stone | 54 min |
| Apr 30, 3:08 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Haskell, LeFlore, Sequoyah | 30 min |
| Apr 30, 3:11 PM CDT | Severe Thunderstorm Warning | SGF | Dallas, Polk | 18 min |
| Apr 30, 3:20 PM CDT | Severe Thunderstorm Warning | SGF | Barry, McDonald | 40 min |
| Apr 30, 3:21 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Carroll | 22 min |
| Apr 30, 3:41 PM CDT | Flash Flood Warning | SGF | Barry, Christian, Greene, Lawrence, Stone | 6 hr |
| Apr 30, 3:43 PM CDT | Severe Thunderstorm Warning | SGF | Stone | 36 min |
| Apr 30, 3:55 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Washington | 50 min |
| Apr 30, 3:56 PM CDT | Severe Thunderstorm Warning | TSA | Carroll, Madison | 49 min |
| Apr 30, 3:59 PM CDT | Severe Thunderstorm Warning | SGF | Christian, Greene, Webster | 46 min |
| Apr 30, 4:07 PM CDT | Severe Thunderstorm Warning | SGF | Christian, Douglas, Taney, Webster | 37 min |
| Apr 30, 4:16 PM CDT | Severe Thunderstorm Warning | LZK | Polk, Scott | 44 min |
| Apr 30, 4:21 PM CDT | Severe Thunderstorm Warning | LZK | Boone, Marion | 39 min |
| Apr 30, 4:36 PM CDT | Severe Thunderstorm Warning | SGF | Ozark, Taney | 54 min |
| Apr 30, 4:41 PM CDT | Severe Thunderstorm Warning | SGF | Laclede, Wright | 34 min |
| Apr 30, 4:42 PM CDT | Severe Thunderstorm Warning | TSA | Madison, Washington | 48 min |
| Apr 30, 4:47 PM CDT | Tornado Warning | LZK | Boone, Marion | 43 min |
| Apr 30, 4:52 PM CDT | Severe Thunderstorm Warning | LZK | Logan, Scott, Yell | 38 min |
| Apr 30, 5:05 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Pushmataha | 40 min |
| Apr 30, 5:08 PM CDT | Tornado Warning | SGF | Ozark, Taney | 67 min |
| Apr 30, 5:24 PM CDT | Severe Thunderstorm Warning | LZK | Montgomery, Polk, Scott | 51 min |
| Apr 30, 5:30 PM CDT | Tornado Warning | LZK | Baxter, Marion | 33 min |
| Apr 30, 5:32 PM CDT | Severe Thunderstorm Warning | LZK | Logan, Montgomery, Polk, Scott, Yell | 43 min |
| Apr 30, 5:40 PM CDT | Severe Thunderstorm Warning | LZK | Logan, Polk, Scott | 50 min |
| Apr 30, 5:44 PM CDT | Severe Thunderstorm Warning | LZK | Johnson, Logan, Pope, Yell | 46 min |
| Apr 30, 6:07 PM CDT | Severe Thunderstorm Warning | SHV | Sevier | 23 min |
| Apr 30, 6:08 PM CDT | Tornado Warning | SGF | Douglas, Howell, Ozark | 52 min |
| Apr 30, 6:12 PM CDT | Severe Thunderstorm Warning | LZK | Logan, Montgomery, Scott, Yell | 48 min |
| Apr 30, 6:12 PM CDT | Tornado Warning | LZK | Conway, Logan, Pope, Van Buren, Yell | 48 min |
| Apr 30, 6:13 PM CDT | Severe Thunderstorm Warning | LZK | Montgomery, Polk, Scott | 47 min |
| Apr 30, 6:16 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Boone, Marion, Newton | 44 min |
| 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 |
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, 6.8 hours before the alert went out and 94 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, 5:53 PM CDT | Mesoscale Discussion | SPC | Arkansas, Baxter, Boone, Bradley, Calhoun, Carroll and 56 more | 37 min |
| Apr 30, 6:24 PM CDT | Tornado Watch | SPC | Baxter, Boone, Clark, Clay, Cleburne, Columbia and 45 more | 3 hr |
| 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 | Alfalfa, Beckham, Blaine, Custer, Dewey, Garfield and 10 more | 2 hr |
Nearby
Tornado Watches in Arkansas, 2010Tornado Watches in Missouri, 2010Tornado Watches in Oklahoma, 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.