Alert archive / Arkansas / Tornado Watches in 2013
Tornado Watch 125
The Storm Prediction Center issued this tornado watch at Apr 18, 2013, 9:25 AM CDT for 5 states. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 18, 2013, 9:25 AM CDT (14:25 UTC)
- Expired
- Apr 18, 2013, 5:00 PM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 102 counties
Arkansas County, AR, Baxter County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Cleveland 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, Fulton County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Montgomery 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, Randolph County, AR, Saline County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Gibson County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Livingston County, KY, Marshall County, KY, McCracken County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dunklin County, MO, Howell County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Perry County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Wayne County, MO
The radar
The Paducah radar (KPAH), 149 km from the middle of the area, began a volume at 14:27 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
- 60%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 9:43 AM CDT | Tornado Warning | SGF | Howell, Oregon | 32 min |
| Apr 18, 9:50 AM CDT | Severe Thunderstorm Warning | LZK | Baxter, Fulton, Izard, Sharp, Stone | 40 min |
| Apr 18, 9:51 AM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Faulkner, Van Buren, White | 24 min |
| Apr 18, 9:55 AM CDT | Severe Thunderstorm Warning | LZK | Clark, Garland, Hot Spring, Pike | 50 min |
| Apr 18, 10:27 AM CDT | Severe Thunderstorm Warning | SGF | Oregon, Shannon | 33 min |
| Apr 18, 10:39 AM CDT | Severe Thunderstorm Warning | PAH | Carter, Ripley | 51 min |
| Apr 18, 11:09 AM CDT | Flash Flood Warning | SGF | Dent, Howell, Shannon, Texas | 6 hr |
| Apr 18, 11:21 AM CDT | Tornado Warning | PAH | Butler, Carter, Wayne | 24 min |
| Apr 18, 11:36 AM CDT | Severe Thunderstorm Warning | PAH | Wayne | 24 min |
| Apr 18, 12:15 PM CDT | Severe Thunderstorm Warning | PAH | Bollinger, Cape Girardeau, Perry | 45 min |
| Apr 18, 12:19 PM CDT | Severe Thunderstorm Warning | LZK | Faulkner, White | 26 min |
| Apr 18, 12:33 PM CDT | Severe Thunderstorm Warning | LZK | Calhoun, Clark, Cleveland, Dallas, Grant, Ouachita | 57 min |
| Apr 18, 12:35 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Sharp | 40 min |
| Apr 18, 12:36 PM CDT | Severe Thunderstorm Warning | LZK | Faulkner, Lonoke, Pulaski, White | 39 min |
| Apr 18, 1:10 PM CDT | Tornado Warning | PAH | Jackson | 35 min |
| Apr 18, 1:30 PM CDT | Tornado Warning | PAH | Jackson, Perry | 30 min |
| Apr 18, 1:47 PM CDT | Tornado Warning | PAH | Franklin, Jackson, Williamson | 28 min |
| Apr 18, 1:57 PM CDT | Tornado Warning | PAH | Franklin, Jefferson, Perry | 33 min |
| Apr 18, 2:04 PM CDT | Flash Flood Warning | PAH | Bollinger, Butler, Cape Girardeau, Carter, Perry, Ripley and 1 more | 6 hr |
| Apr 18, 2:11 PM CDT | Tornado Warning | PAH | Franklin | 34 min |
| Apr 18, 2:30 PM CDT | Severe Thunderstorm Warning | PAH | Edwards, Franklin, Hamilton, Jefferson, Wabash, Wayne and 1 more | 60 min |
| Apr 18, 2:33 PM CDT | Tornado Warning | PAH | Franklin, Hamilton | 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 12:00Z, 2.4 hours before the alert went out and 211 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
- 1219 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 578 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 421 m²/s²
- 0-3 km storm-relative helicity
- 522 m²/s²
- Significant tornado parameter
- 3.3
- Supercell composite
- 19.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 10:47 PM CDT | Tornado Watch | SPC | Benton, Carroll, Crawford, Madison, Washington | 7 hr |
| Apr 18, 2:01 AM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Crawford, Franklin, Madison and 2 more | 89 min |
| Apr 18, 4:02 AM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Conway, Crawford, Franklin and 17 more | 58 min |
| Apr 18, 7:26 AM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Clay, Cleburne, Conway, Craighead and 20 more | 2 hr |
| Apr 18, 12:48 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clay and 29 more | 87 min |
| Apr 18, 1:43 PM CDT | Tornado Watch | SPC | Ashley, Chicot, Union | 8 hr |
| Apr 17, 8:21 PM CDT | Mesoscale Discussion | SPC | Cass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more | 84 min |
| Apr 17, 8:53 PM CDT | Mesoscale Discussion | SPC | Calhoun, Greene, Jersey, Pike, Scott | 97 min |
| Apr 17, 9:57 PM CDT | Tornado Watch | SPC | Adams, Brown, Pike | 7 hr |
| Apr 17, 10:48 PM CDT | Mesoscale Discussion | SPC | Champaign, Christian, Coles, DeWitt, Douglas, Edgar and 12 more | 57 min |
| Apr 17, 11:46 PM CDT | Mesoscale Discussion | SPC | Calhoun, Greene, Morgan, Pike, Scott | 89 min |
| Apr 18, 5:36 AM CDT | Mesoscale Discussion | SPC | Bond, Clinton, Fayette, Madison, Monroe, Montgomery and 3 more | 54 min |
| Apr 18, 5:42 AM CDT | Tornado Watch | SPC | Bond, Clinton, Fayette, Jersey, Macoupin, Madison and 6 more | 8 hr |
| Apr 18, 7:25 AM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Clay, Coles, Crawford, Cumberland and 17 more | 95 min |
| Apr 18, 8:31 AM CDT | Tornado Watch | SPC | Clark, Clay, Coles, Crawford, Cumberland, Douglas and 6 more | 7 hr |
| Apr 18, 11:14 AM CDT | Mesoscale Discussion | SPC | Clark, Clay, Crawford, Jasper, Lawrence, Marion and 4 more | 2 hr |
| Apr 18, 2:47 PM CDT | Mesoscale Discussion | SPC | Clark, Crawford, Lawrence | 88 min |
| Apr 18, 3:32 PM CDT | Tornado Watch | SPC | Adams, Bartholomew, Blackford, Boone, Brown, Clay and 27 more | 3 hr |
| Apr 18, 5:33 PM CDT | Mesoscale Discussion | SPC | Adams, Allen, Bartholomew, Blackford, Boone, Brown and 43 more | 117 min |
Nearby
Tornado Watches in Arkansas, 2013Tornado Watches in Illinois, 2013Tornado Watches in Missouri, 2013Every tornado watch in 2013
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.