Alert archive / Arkansas / Tornado Watches in 2007
Tornado Watch 181
The Storm Prediction Center issued this tornado watch at Apr 24, 2007, 9:10 PM CDT for 32 counties in Arkansas. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 24, 2007, 9:10 PM CDT (02:10 UTC)
- Expired
- Apr 25, 2007, 1:08 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 32 counties
Baxter County, AR, Boone County, AR, Clark County, AR, Cleburne County, AR, Conway County, AR, Dallas County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Lonoke County, AR, Marion County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR
The radar
The Little Rock radar (KLZK), 91 km from the middle of the area, began a volume at 02:12 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 9:20 PM CDT | Severe Thunderstorm Warning | LZK | Pope | 40 min |
| Apr 24, 9:25 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Cleburne, Stone | 65 min |
| Apr 24, 9:44 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Faulkner, Perry, Van Buren | 46 min |
| Apr 24, 9:52 PM CDT | Severe Thunderstorm Warning | LZK | Izard | 53 min |
| Apr 24, 9:54 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, White | 66 min |
| Apr 24, 10:10 PM CDT | Severe Thunderstorm Warning | LZK | Independence | 65 min |
| Apr 24, 10:12 PM CDT | Severe Thunderstorm Warning | LZK | Fulton, Sharp | 63 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 00:00Z, 2.2 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
- 789 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 681 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 7:33 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Clark, Crawford, Franklin, Hempstead and 15 more | 117 min |
| Apr 24, 10:05 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Crittenden, Cross, Greene, Jackson and 4 more | 85 min |
| Apr 24, 10:07 PM CDT | Mesoscale Discussion | SPC | Little River, Miller, Sevier | 83 min |
| Apr 24, 10:35 PM CDT | Tornado Watch | SPC | Hempstead, Howard, Lafayette, Little River, Miller, Nevada and 1 more | 5 hr |
| Apr 24, 10:53 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more | 3 hr |
| Apr 24, 11:58 PM CDT | Mesoscale Discussion | SPC | Clark, Dallas, Garland, Grant, Hempstead, Hot Spring and 15 more | 92 min |
| Apr 25, 12:45 AM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 2 more | 90 min |
| Apr 25, 2:10 AM CDT | Mesoscale Discussion | SPC | Columbia, Union | 65 min |
| Apr 25, 12:30 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Washington | 60 min |
| Apr 25, 1:11 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Carroll | 8 hr |
| Apr 25, 2:46 PM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Conway, Crawford, Franklin, Johnson and 12 more | 59 min |
| Apr 25, 3:38 PM CDT | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more | 6 hr |
| Apr 25, 6:15 PM CDT | Mesoscale Discussion | SPC | Clark, Columbia, Lafayette, Nevada, Ouachita | 90 min |
| Apr 25, 6:38 PM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Cleburne, Conway, Faulkner, Fulton and 17 more | 97 min |
Nearby
Tornado Watches in Arkansas, 2007Every tornado watch in 2007
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.